SE GHA SWG Catalogue

System configuration

up to 40.5 kV

Gas-insulated switchgear with vacuum circuit-breaker for primary distribution

Medium Voltage Distribution

GHA

GHA

Delivery conditionsThe General Conditions of Delivery as amended shall apply.

IllustrationsThe illustrations are not binding.

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Introduction 6

Features ......................................................................................................... 6

Standards 10

Regulations, specifications and technical data ........................................... 10

Type designation .......................................................................................... 10

Applied standards ........................................................................................ 11

Operator safety and classification ................................................................ 12

Internal arc classification .............................................................................. 14

Installation of switchgear units with IAC qualification .................................. 15

Product description 16

The GHA modules ........................................................................................ 16

GHA single busbar ....................................................................................... 17

The GHA modules ........................................................................................ 18

GHA double busbar ...................................................................................... 19

Technical description .................................................................................... 20

Examples: Double busbar ............................................................................ 22

SBB operator interface ................................................................................. 23

DBB operator interface................................................................................. 24

Drives and interlocking systems .................................................................. 25

B-link - the innovative busbar connection system........................................ 31

Gas compartment monitoring by IDIS information system .......................... 33

Low-voltage cabinet ..................................................................................... 35

IMOS switchgear control system ................................................................. 36

Voltage detection system and phase coincidence ....................................... 37

Current transformer in outgoing feeder area ............................................... 38

Voltage transformers .................................................................................... 39

Switchgear modules 40

Outgoing feeder panels, single busbar ........................................................ 40

Outgoing feeder panels, double busbar ....................................................... 41

Bus section coupler single busbar ............................................................... 42

Bus section couplers double busbar ............................................................ 43

Bus coupler, busbar earthing switch, metering panel .................................. 44

Busbar attachments for single busbar switchgear ....................................... 45

Contents

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GHA

Range of products 46

Single busbar panels and double busbar - explanations ............................. 46

Single busbar panels and double busbar - main dimensions ...................... 47

Single busbar panels - variants.................................................................... 47

Double busbar panels - variants .................................................................. 47

Selection Tables 62

GHA with vacuum circuit-breaker and disconnector, single busbar and

double busbar 12 kV .................................................................................... 62


double busbar 17.5 kV ................................................................................. 64


double busbar 24 kV .................................................................................... 66


double busbar 36 kV .................................................................................... 68


double busbar 40.5 kV ................................................................................. 70

Electrical supplementary modules 72

Environmental aspects 74

Design data 77

Versatile cable connectors ........................................................................... 77

Bus terminals ............................................................................................... 77

Connection dimensions for cable connections and bar connections ........... 78

Safe cable testing ....................................................................................... 79

Outer cone-type cable connection combinations ......................................... 80

Installation versions 88

Single busbar in case of IAC qualification AFL wall-mounting ..................... 88

Wall-mounting, free-standing installation - Back-to-back ............................. 89

Double busbar in case of IAC qualification AFL wall-mounting ................... 90

Wall-mounting, free-standing installation - Back-to-back ............................. 91

Single busbar and double busbar in case of IAC qualification AFLR with

pressure relief duct....................................................................................... 92

Contents (contd.)

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Basic dimensions and floor openings 93

Installation Single busbar - example ............................................................ 93

Installation of double busbar - examples ..................................................... 94

Floor openings ............................................................................................. 95

Center panels with pressure relief duct SBB ............................................... 96

Center panels without pressure relief duct SBB .......................................... 97

Center panels with pressure relief duct DBB ............................................... 98

Center panels without pressure relief duct DBB .......................................... 99

End panels with pressure relief duct SBB.................................................. 100

End panels without pressure relief duct SBB............................................. 101

End panels with pressure relief duct DBB ................................................. 102

Shipping instructions 103

Transporting the switchgear unit ................................................................ 103

Contents (contd.)

6 GHA EN

GHA Introduction

A ground-breaking switchgear concept featuring high economic efficiency, availability and versatility

The gas-insulated circuit-breaker switchgear GHA is ground-breaking as regards

high reliability operating reliability maximum operator safety ergonomic operator guidance.

The GHA is characterized additionally by its specific economical and ecological features.

GHA is an optimum solution for different requirements and applications - in transformer substations as well as in switching stations for primary power supply. Further fields of application of GHA are public and industrial distribution networks, e. g. in

power supply companies power plants wind farms back-up power supply systems transportation smelteries the oil and gas industry petrochemical plants open-cast lignite mining mining metallurgy ships and offshore plants railway traction power supply.

GHA switchgear with the rated voltages up to 40.5 kV rated currents up to 2500 A rated peak withstand currents up to 100 kA rated short-time currents up to 40 kA (3 s)

have been designed as single busbar systems or with double busbar systems.

GHA has been tested according to the international IEC and the European EN standards and the appropriate national standards derived from them.

FeaturesOperator-safe

Maximum protection against accidental contact due to complete metal enclosure of all switchgear components Due to system-related reasons, operation is only possible with the enclosure closed and from the operator front Optimum safety of operation due to a complete interlock-ing system Successful internal arc qualification IAC in accordance with IEC 62271-200 / EN 62271-200 Type of enclosure IP 65 of the gas-filled compartments with the live components Capacitive voltage testing system for zero voltage verification Cable testing on the switchgear front.

GH Single busbar switchgear

GHA

7GHA EN

Introduction (contd.)

User-friendly Compact und clear design Easy access to all functional groups Good visual operator guid-ance for mechanical operation of the panel Modern industrial design according to ergonomic aspects facilitates operator guidance Visually highlighted control panel for mechanical switch position signalling on the switchgear panel

Economically efficient Moderate overall investments Reduced space and surface area requirements Short assembly times Minimized operating costs Maintenance-free gas-filled compartments (sealed for life) Minimized planning costs Long service life

Independent of environmental influences All HV parts in SF6 atmosphere with a slight overpressure, thus protected against air humidity and saline atmosphere Hermetically sealed against the penetration of foreign matter, such as dust, vermin, dirt Hermetically sealed pressure system for all gas-filled compartments Gas tank made of stainless chromium-nickel steel

Safe to operate The active medium-voltage components are located in hermetically enclosed, gas-filled compartments and are thus insensitive to aggressive atmosphere, dirt, dust vermin

The term sealed pressure system means: No inspection and no replenishing of the insulating gas required for the entire service life Stable and reliable insulation gas systemle Switch drive easily acces-sible from outside of the gas compartments Straightforward and robust drive mechanics with continuous switchgear interlocking Current transformers as toroidal-core current transformers mounted outside of the gas compartments on earthed housing components (not subject to dielectric load from the high voltage) Single-pole inductive voltage transformers arranged outside of the gas-filled compartments with contact-proof enclosure flanged to the switchgear via plug-and-socket connector on the primary

side disconnecting device with the positions Voltage transformer - ON and

Voltage transformer - earthed integrated optionally in the switchgear on the high-voltage end

no removal of switchgear components in case of voltage tests of the switchgear and the cables.

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GHA

Reliable Electronic and temperature-compensated gas monitoring equipment IDIS Each gas compartment is monitored individually and has its own pressure relief device Low number of static and dynamic seals Use of vacuum circuit-breakers with high number of mechanical and electrical operations Robust and reliable drive and interlocking system

EcologicalThe GHA switchgear satisfies to a very high degree the ecological requirements in view of environmental protection thanks to

Optimization of material and energy consumption during manufacture, operation and disposal No gas handling on the construction site during erection, extensions, disposal or replacement of panels from the switchgear assembly Compliance with todays ecological requirements during its useful life The use of recyclable materials for the efficient re-use or disposal at the end of its service life. Used SF6 is simply evacu-ated via integrated disposal valves, and recycled (SF6 Re-Use). Advantages of SF6-insulated medium-voltage switchgear verified in the distribution system via eco balance study. Manufacturer certified in accordance with ISO 9001, ISO 14001 and EMAS II.

Expandable Bilateral extension is possible without gas handling and without intervention in the gas-filled compartments of the adjacent panels.

Easy to assemble Low transport weights Very straightforward line-up of panels without gas handling on site and quick assembly Always front access to the spacious cable connection area Can be installed in the switching room without the use of lifting devices.

Space-saving Very compact panel dimensions All operations on the switchgear front Installation possible, as a rule, without additional assembly aisle.


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1 Low-voltage cabinet2 Control panel3 Cable end boxes4 Cable connection compartment cover5 Voltage transformer module on busbar6 Gas-filled busbar compartment with three-position switch7 Busbar8 Three-position switch9 Gas-filled compartment with circuit-breaker10 Vacuum circuit-breaker11 Toroidal-core current transformer12 Disconnecting device for voltage transformer13 Voltage transformer in outgoing feeder block14 Busbar module (gas-filled) with three-position switch for double busbar15 Busbar module with disconnector

Rated voltageRated voltage kV 12 17.5 24 36 40.5

Rated lightning impulse withstand voltage kV 75 95 125 170 185

Rated power frequency withstand voltage kV 28 38 / (42) 50 70 80 / (85)Rated peak withstand current max. kA 100 100 100 100 80Rated short-time current max. 3s kA 40 40 40 40 31.5Rated busbar currents max. A 25001) 25001) 25001) 25001) 25001)

Rated current of branch circuits, naturally ventilated max. A 2500 2500 2500 2500 2500Internal arc classification IAC max. 40 kA, 1s 31.5 kA, 1s


1) higher values on request

Technical data

GHA single busbar GHA double busbar

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GHA Standards

Regulations, specifications and technical data GHA switchgear units are

metal enclosed prefabricated and type-test-ed in accordance with the latest international standards SF6 insulated with internal arc classification

The gas-filled compartments are hermetically sealed, confined pressure systems (sealed pressure systems).

Degrees of protection against accidental contact and foreign objects according to IEc 60529Main electric circuits IP65Drives IP2X 1)

Low-voltage cabinet IP3X 1)

Cable connection compartment IP3X 1)


Type designation

Example GHA 36 - 16 - 08

Environmental and operating conditionsGHA switchgear units can be operated as indoor switchgear under normal operating conditions in accordance with the standard IEC 62271-1. Oper-ation under conditions other than these is only admissible upon consultation with and with the consent of the manufacturer.

Ambient conditionsTemperature class minus 5 indoorsMin./max. ambient temperature c - 5 / + 40 1)

Average value over 24 hours (max.) c 35

1)

Mean rel. air humidity: 24 hour/1 month % 95 / 90

Maximum installation altitude above sea-level m 1000

1)

Insulating gasType Sulphur hexafluoride (SF6)

Design pressure pre at 20 C MPa0.03 (24 kV), 0.05 (36 kV), 0.06 (40.5 kV)


GHA series

Rated voltage 36 kV

Rated short-time current 16 kA

Rated normal current 800 A

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Standards (contd.)

Applied standardsGHA switchgear units meet the following standards and regulations

1) For cable connection compartments in case metal-enclosed cable end boxes and unlocked cable front covers are used: LSC 2B2) depending on operating frequency

Term IEc standard IEc-class EN-standard

Switchgear IEc 62271-200 IEc 62271-1)Loss of service continuity category: LSc 2A 1)Partition class (compartmentalization class): PM EN 62271-200EN 62271-1)

Internal arc classification IEC 62271-200 EN 62271-200Earthing switch IEC 62271-102 E2 EN 62271-102Three position disconnector IEC 62271-102 M1 EN 62271-102Circuit-breaker IEC 62271-100 M2, E1, E2 2), C1 EN 62271-100Current transformers IEC 60044-1 EN 60044-1Inductive voltage transformers IEC 60044-2 EN 60044-2Appliance couplers, cable connection systems EN 50181

Protection against accidental contact, foreign bodies and water IEC 60529 EN 60529

Erection HD 637 S1Operation of electrical equipment EN 50110

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GHA

Switchgear loss of service continuity categories on opening accessible compartments Features

LSC2 LSC2A Busbars and other switchgear panels may be energized

Switchgear categories as regards the type of partition between energized components and an opened, accessible compartment Features

PM

Metallic partitions betweenenergized components and the opened compartment (maintaining the metal-enclosed condition)

Qualification of switchgear regarding hazards in case of internal arcs during normal operation Features

IAC classification

The internal arc classification IAC refers to the effect of internal excess pressure on covers, doors, inspection glasses, vents etc.Moreover, thermal effects of the internal arc on the enclosure or its root on the enclosure and escaping hot gases and incandes-cent particles are taken into consideration.The successful IAC classification is to provide, in case of an internal arc, a verified operator safety level approaching that of a switchgear under normal operating conditions.

The air-insulated cable connection compartments and connection compartments of the GHA switchgear feature loss of service continuity category LSC2A-PM.

LSC2A means: In case of access to the air-insulated compartment of a switchgear panel, the busbars and other switchgear panels may continue operating. As the GHA series is a technology featuring fixed devices, the high-voltage cable in the outgoing feeder of the panel concerned must be de-energized and earthed. The busbars and other panels may remain energized. The parti-tions of the air-insulated compartments of GHA are made of metal.

If unlocked cable compartment front covers are used simul-taneously with metal-enclosed cable end boxes, loss of service continuity category LSC2B-PM applies.

Standards (contd.)

Types of compartments in view of accessibility Features

Compartments accessible to operating companies

Compartments accessible via interlock control

Opening does not require any tools - interlock only permits access if high-voltage components have been earthed in zero-voltage condition

Compartments accessible depending on process

Opening does not require any tools - interlock facilities must be combined with the work instruc-tions of the operating company to enable access only when high-voltage components are earthed and completely isolated from the power supply (zero voltage)

Operator safety and classificationThe loss of service continuity category in IEC 62271-200 and EN 62271-200 refers to the classification of the switchgear functions in conjunction with the uninterruptible power supply during access to one of the switchgear compartments.

The above-mentioned stand-ards contain definitions of certain loss of service continuity categories of the switchgear during access to a compartment. Such access may be necessary, e.g. in case of inspection or maintenance work, or for work in general.

All gas-filled compartments of the switchgear GHA are inaccessible compartments in accordance with section 8.2.2 of IEC/EN 62271-200. Access for the user is not provided and opening would destroy the integrity of the gas-filled compartments. However, the GHA series requires the cable connection compartment to be accessible for cable tests and/or for cable connection work.

The classification features of the above-mentioned air-insulated compartments of the GHA series comprise:

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Internal faults causing internal arcsThe GHA switchgear has been designed for a very low prob-ability of internal arcs during its entire service life.

IEC 62271-200 and EN 622721-200 point out that faults within an enclosure, e.g. due to damage, extraordinary operating conditions or operating errors, cannot be ruled out completely and may give rise to an internal arc. For this reason, the switchgear must provide the operator with a very good degree of protection. Operator safety is achieved, in accordance with the switchgear standard, by reducing the hazard to a tolerable level. In accordance with ISO / IEC Guideline 51, sect. 5 (Safety concept), this hazard consists both of the probability of the occurrence and of the severity of the damage.

With the GHA switchgear, all preventive measures in acc. with IEC 62271-200 and EN 62271-200 Table 2 Locations of defects, causes and examples for measures reducing the probability of internal arcs - have been implemented by design. This Table also lists explicitly the use of gas-filled compartments as an example for preventive measures to reduce the prob-ability of internal arcs.

To ensure maximum protection of persons in case of an internal arc, the above-mentioned standard recommends further measures to limit the external consequences. These measures, e.g. pressure relief devices and all operations exclusively with the front closed, have been implemented systematically in the GHA switchgear series.

Planning engineers and oper-ating companies alike can use, in accordance with IEC 62271-200 and EN 62271-200, the Guideline for selection of suitable switchgear as regards internal arcs:

In case of a negligible risk: metal-enclosed switchgear with internal arc classification not required. In this context, it is especially important that in the case of gas-insulated switchgear, the risk of internal arc faults is extremely low by design. If the risk is regarded as considerable: only metal-enclosed switchgear with internal arc qualification IAC should be used.

In making this decision, planning engineers and operating companies should apply the procedure for selection of suit-able switchgear in accordance with ISO / IEC Guide 51, sect. 6. This procedure implies that the operator must contribute to reducing the risk.

Standards (contd.)

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GHA Standards (contd.)

Internal arc classificationThe internal arc classification IAC provides a verified level of operator safety in the immedi-ate vicinity of the switchgear under normal operating conditions: The internal arc classification is an option in accord-ance with IEC 62271-200 and EN 62271-200. It refers to the effect of internal excess pressure on covers, doors, inspection glasses, vents etc. Moreover, the thermal effects of the internal arc and its root points on the enclosure and escaping hot gases or incandescent particles are taken into account. The GHA switchgear series is available in the design with internal arc classification IAC. In the IAC design, it has been designed for accessibility degree A, i.e. the place of installation of the GHA panels is an enclosed electrical oper-ating area and only accessible to authorized staff.

The internal arc classification IAC for the GHA series refers to the following sides of the switchgear enclosure:

the front side (operators side) and the sides optional for the reverse side of the switchgear.

The IAC qualification has been verified successfully for the GHA series up to 40 kA, arc duration 1 second: Qualification IAC AFL Internal arc 40 kA 1s. In case of accessibility from the rear, an internal arc classification with the following additional facilities is avail-able for the rear side up to 40 kA, arc duration 1 second: Qualification IAC AFLR Internal arc 40 kA 1s.

Design for internal fault testing with indicators

Regarding the successful internal arc classification IAC, the following criteria have been complied with:

criterion 1

Correctly secured doors and covers have not opened.

criterion 2

Within the specified test dura-tion, the enclosure has not been torn open and no parts have been hurled away.

criterion 3

No holes have occurred either in the accessible sides (front control panel and switchgear sides) or, in case of IAC FLR, on the reverse side.

criterion 4

The vertical and horizontal indicators have not been set alight due to the effect of the hot gas.

criterion 5

The ground connection of the enclosure has remained effective.

Aufbau zur Strlichtbogenprfung mit Indikatoren

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Standards (contd.)

Installation of switchgear units with IAc qualificationIEC 62271-200 / EN 62721200 requests minimum admissible conditions for installation of switchgear with IAC qualification.

The standard implies the following specifications for IAC qualification testing:

Minimum clearance 600 (+ 100) mm from the panel top to the ceiling. An additional test with smaller clearances to the ceiling is admissible as a supplementary test to obtain information on the installation conditions.

The overall switchgear height of the series GHA with IAC qualification is 2400 mm (with low-voltage cabinet 800 mm) and 2780 mm (with low-voltage cabinet 1200 mm).The IAC qualification test has been performed successfully with a ceiling height of 3.0 m or 3.4 m.

A pressure relief duct is avail-able on special request. The hot gases escaping in the case of an internal arc are routed from all compartments into this pressure relief duct. Gas is discharged

into the open air.This pressure relief duct is always necessary in case of the requirement

IAC qualification AFLR, or compliance with the internal arc qualification at the outside of the reverse side of the switchgear, IAC qualification AFL or AFLR for 40 kA with a duration of 1 second

If a pressure relief duct is attached, the current-carrying capacity is e.g. 2450 A (instead of 2500 A).

The instructions and information regarding minimum room heights and wall clearances for the GHA switchgear series are contained in this System Con-figuration; compliance with these is mandatory for switchgear with IAC qualification. These are the minimum admissible conditions in accordance with the standard. Each installation condition which is not as strict and / or provides for more space, in accordance with IEC 62271-200 EN 62271-200, is viewed as having been covered by the IAC qualification test.

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GHA Product description

1 Low-voltage cabinet2 Circuit-breaker module with busbars and three-position switch3 Drive block4 Outgoing feeder block with outer cone-type system, toroidal-core

current transformer and actuation of the voltage transformer disconnecting device

5 Voltage transformer (pluggable)6 Cable connection Examples: double connection per phase7 Panel rack8 Control panel9 Front mounting frame10 Cable compartment cover

Optional11 Outgoing feeder block with inner cone-type system, 2 cables per

conductor with toroidal-core current transformer and voltage transformer

12 Outgoing feeder block with inner cone-type system, quadruple cable connection with toroidal-core current transformer and voltage transformer

Examples: Single busbarThe GHA modules

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Product description (contd.)

GHA single busbar

The prefabricated, type-tested switchgear panels GHA are metal-clad in accordance with IEC/EN 62271200. Sulphur hexafluoride SF6 is used as insulating medium. The modular design of a panel comprises the following units in case of the

single busbar panel GHA gas-filled busbar compartment with three-position disconnector/

earthing switch, connection valve for gas density switch, pressure relief device

gas-filled circuit-breaker compartment incl. connection elements for cable connections, connection valve for gas density switch, pressure relief de-vice, voltage transformer and disconnecting device for voltage transformer (optional),

drive box with all drive units and auxiliary devices, cable connection area, optional with toroidal-core current transformer

incl. voltage transformer in outgoing feeder, low-voltage cabinet.

GHA Single busbar

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GHA Product description (contd.)

Examples: Double busbarThe GHA modules

1 Low-voltage cabinet2 Circuit-breaker module with busbars and three-position switch2a Drive linkage for three-position switch SSI2b Drive linkage for three-position switch SSII3 Drive block for three-position switch SSI and SSII4 Outgoing feeder block with outer cone-type system, toroidal-core

current transformer and actuation of the voltage transformer disconnecting device

5 Voltage transformer (pluggable)6 Cable connection Example: Double connection per phase7 Panel rack8 Control panel for SSI and SSII9 Front mounting frame10 Cable compartment cover

Optional11 Outgoing feeder block with inner cone-type system, 2 cables per

conductor with toroidal-core current transformer and voltage transformer

12 Outgoing feeder block with inner cone-type system, quadruple cable connection with toroidal-core current transformer and voltage transformer

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SSI

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Double busbar panel GHA upper gas-filled busbar compartment with three-position disconnector

earthing switch, connection valve for gas density switch, pressure relief device

rear gas-filled busbar compartment with two-position disconnector, connection valve for gas density switch, pressure relief device

gas-filled circuit-breaker compartment, incl. connection elements for cable connections and voltage transformer.

Connection valve for gas-density switch, pressure relief device, disconnecting device for voltage transformer (optional),

drive box with all drive units and auxiliary devices, cable connection area optionally with voltage transformer in outgoing

feeder low-voltage cabinet.

GHA Double busbar

GHA double busbar

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GHA

Technical descriptionAll gas-filled compartments with pressure vessels are hermetically sealed pressure systems. Each busbar compartment is segregated from the circuit-breaker compartment metallically and as regards gas leakage. In the case of double busbar panels, both busbar compartments are segregated from each other and also segregated from the circuit-breaker compartment metallically and as regards gas leakage. The upper busbar compartment accommodates the busbar system and the three-position switch, a busbar compartment with the busbar system and two-position switch are located at the rear of the panel.

The lower termination of the gas-filled vacuum circuit-breaker compartment is effected by a floor module accommodating the connection elements for the cable end boxes, the toroidal-core current transformer and the flange mounted voltage transformer in the out-going feeder. The toroidal-core current transformers are mounted outside of the gas- filled compartment between the circuit-breaker and the cable connection compartments on single-pole and externally earthed bushings.

The connection elements for the cable connection can be designed as system

outer cone-type in acc. with EN 50181 for terminal cross sections up to 630 mm2, up to incl. 36 kV. inner cone-type 1 to 3 in acc. with EN 50181 and special terminal type Connex size 4.

The metal-enclosed support structure of the central high-voltage section has been designed as a cable connection compartment with front access. It accommodates simultaneously the voltage transformers in the outgoing feeder and cable-type transformers, if any. Control, monitoring and line protection as well as the components of a switchgear control system, if any, are installed in the metal-enclosed low-voltage cabinet mounted on top of the basic module.

Adjacent panels are connected on the busbar end without requiring gas handling for erection, installation and panel replacement via the innovative B-link (busbar link) system.

Vacuum circuit-breakerThe three-pole vacuum circuit-breaker with its maintenance-free maintenance vacuum interrupters is installed horizontally in the gas compartment. The action of force on the movable switching contacts is exclusively effected in the required switching direction. The vacuum interrupter chambers and the metal bellows pertaining to them are protected by their supporting structure against inadmissible distorsion and the action of force. All 3 vacuum interrupters are actuated together via 1 shaft from the circuit-breaker drive.


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Three-/two-position disconnectorThe three-pole three-position disconnector has prepared the positions Branch circuit ON-OFF and Prepared for earthing. It is used for connecting to and disconnecting from the busbar system and for establishing the isolating distance conditions for working safely in the branch circuit. In the position Earthing ON, the three conductors are short-circuited and the electrical connection to the earth potential is established. The branch circuit earthing has been prepared. In this defined position, the switched-off vacuum circuit-breaker is connected automatically during actuation for Earthing switch ON via a mechanical intertripping circuit (optional), thus short-circuiting and earthing the branch circuit via the circuit-breakers making capacity.Separate mechanical actuation devices and separate mechanical switch position indicators for the operations Branch circuit ON/OFF Earthing ON/OFF enable very clear actuation and safe operation.With the double busbar panels GHA, an additional two-position disconnector is used for connecting and disconnecting to the second busbar system and for providing the isolating distance conditions for safe work in the branch circuit.Each two-/three position disconnector is installed in its own gas compartment, together with the appropriate busbar system.

Straightforward operation via functional intuitive operator interfaceThe GHA is characterized especially by the following operating features:

Ergonomic operability Logical operation Logical function states Good visual communication of the overall function and operating states Optimum operator guidance All operations can be performed optionally via a motor-operated mechanism

The mechanical control panel is located at an optimum height for operation and arranged in a recessed position on the switchgear front. Thus, the operating area is clearly visible while no control elements protrude from the switchgear front. The position of the individual elements has been selected according to their function, i.e. according to their allocation to the corres-ponding device functions. The elements which form part of a switching device, such as position indicators, crank ports or mechanical pushbuttons, are visually linked by a specific pattern and integrated in a mimic diagram.Mechanical operation is performed the same way as with the habitual operation with stationary switching devices. Separate control elements and mechanical switch position indicators are available for the following functions:

Circuit-breaker ON - OFF Disconnector ON - OFF Outgoing earthing switch ON-OFF accomplished


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Integral earthing of the branch circuitVia a mechanical intertripping circuit of the vacuum circuit-breaker, coupled to the function Earthing ON-OFF of the three-position disconnector, the branch circuit is safely short-circuited and earthed.

After the defined position Earthing ON of the three-position switch has been reached, the switched-off vacuum circuit-breaker is switched on automatically mechanically and the outgoing feeder short-circuited and earthed. Before the defined position Earthing ON of the three-position switch is exited, the switched-on vacuum circuit-breaker is switched off automatically mechanically and the outgoing feeder is de-earthed. The GHA series does not require separate actuations, e.g. for the operation Preparing earthing and Connecting vacuum circuit-breaker for earthing, as well as the provision of any additional releases or locks. In position Earthing I, opening the vacuum circuit-breaker is prevented by mechanical and electrical means.

Examples: Double busbar

Actuation of the disconnector

Interrogating slide, disconnector and earthing switch

Actuation Earthing ON - OFF

Interrogating slide of the disconnectors

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SBB operator interface1 Pushbutton circuit-breaker OFF2 Nameplate3 Circuit-breaker operations counter4 AInsertion opening for charging the circuit-breakers spring mechanism manually5 Status indicator for spring mechanism released/charged6 Pushbutton circuit-breaker ON7 Switch position indicator, circuit- breaker8 Switch position indicator, disconnector9 Insertion opening for operation of the disconnector10 Insertion opening for operation of the earthing switch11 Earthing switch position indicator12 Interrogation slide, disconnector and earthing switches13 Symbol for capacitive interface14 Information sign15 Mechanical lock-out with cylinder lock

Riser panel with dis-connector and earth-ing switch, without circuit-breaker. For design and description of the control elements and indicators, please refer to the illustration above.

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DBB operator interface1 Busbar 12 Busbar 23 Position indicator of earthing switch4 Insertion opening for operation of the earthing switch5 Insertion opening for operation of the disconnector, busbar 26 Position indicator for disconnector, busbar 27 Switch position indicator, circuit-breaker8 Pushbutton circuit-breaker ON9 Pushbutton circuit-breaker OFF10 Status indicator for spring mechanism released/charged11 Insertion opening for charging the circuit-breakers spring mechanism manually12 Symbol for capacitive interface13 Mechanical lock-out mechanism with cylinder lock14 Nameplate15 Circuit-breaker operations counter16 Insertion opening for operation of the disconnector, busbar 117 Position indicator for disconnector, busbar 118 Interrogation slide for disconnector, busbar 119 Interrogation slide for disconnector, busbar 2 and (outgoing) earthing switch

Riser panel with dis-connector and earth-ing switch, withoutcircuit-breaker. For design and description of the control elements and indicators, please refer to the illustration above.

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Drives and interlocking systemsThe circuit-breaker is fitted with a spring mechanism with the operating sequences for automatic reclosure.

The circuit-breaker drive and the two- to three-position disconnector drives are protected mechanically so that the drive is not destroyed even in case of operating errors, or faulty operation is prevented reliably. In the case of double busbar switchgear GHA and for inter-panel interlocks, additional electro-magnetical interlocks are used as mechanical lock-outs. The crank for actu-ation of a drive for the function Disconnector ON-OFF or Earthing switch ON-OFF can only be inserted, as a rule, if this is permitted by the appropriate switch condition.

Otherwise, the drive is protected by free wheeling or by torque limitation in the crank.

The drives feature auxiliary equipment, e.g. auxiliary switches, magnetic releases, motor drives, blocking coils, interlocking devices etc. The switch positions are displayed mechanically in the control panel. The mechanical switch position indicators as well as actuation of the drives are integrated in a very clear mimic diagram in the control panel and directly visible at any time.

Maintenance of the switching devices and the drives is absolutely straightforward (see Operating Manual), taking the admissible mechanical and electrical numbers of switching operations into account, and under normal operating conditions for indoor switchgear in accordance with IEC 62271-1.

Internal mechanical interlocks of the panel With the circuit-breaker closed, the interrogation slide is locked for the disconnector and the earthing switch. The interrogation slide always releases one insertion opening only (disconnector or earthing switch), or both of them are locked. The crank for the disconnectors and earthing switches can only be removed in its appropriate end position. The earthing switch can only be actuated in direction ON with the circuit-breakers spring mechanism charged (intertripping circuit of circuit-breaker during earthing). When the crank on the disconnector or earthing switch is still in place, or when the interrogation slide is open, the following components are locked: ON pushbutton of circuit-breaker ON pulse is interruptedC

In panels featuring two interrogation slides (e. g. double busbar panel, bus section coupler and bus coupler), the following features are locked: Both interrogation slides cannot be opened simul-taneously. The interrogation slides are blocked depending on the position of the

disconnector or earthing switch (see interlock tables).


26 GHA EN


Blocking coil required, if ... Interlock function

motor drive on disconnectorcircuit-breaker ON pushbutton, except if this pushbutton is already integrated in the cylinder lock-type mechanical lock-out.

bus section coupler in switchgear

both interrogation slides of the earthing switches in the bus section couplerall disconnectors in the branch circuit panels or additional couplers

bus coupler in switchgear

both interrogation slides of the earthing switches in the bus couplerOFF pushbutton of circuit-breaker in bus couplerall disconnectors in the branch circuit panels or additional couplers

Mechanical lock-out mechanisms with U lock (optional)On request, circuit-breakers, disconnectors and earthing switches can be equipped with padlocks to prevent mechanical actuation.

Mechanical lock-out with cylinder lockAn additional cylinder lock-type interlock is installed as standard in case the disconnector and earthing switch are motorized. This interlock releases either manual or electrical actuation of the drives. The other one remains locked in each case.

Optionally, the ON/OFF pushbuttons of the circuit-breaker can be integrated into the cylinder lock-type interlock individually.

Electromagnetic interlocksElectromagnetic blocking coils can be used for inter-panel as well as intra-panel interlocks:

the actuating ports for disconnector and earthing switch are prevented from being released by the interrogation slide; the circuit-breakers ON and OFF pushbuttons are blocked.

In case of failure of the supply voltage, all electrical interlocks are in their locked position.

If no blocking coils are being used for the locking devices, a mechanical lock-out with cylinder or U lock must be provided.

11

1

2

2

2

1 Mechanical lock-out mechanism with cylinder lock2 Information plate

1 InterlockflapsforON/OFFpushbutton2 Blocked insertion openings for disconnector and earthing switch

1 1

22

1

2

GHA

27GHA EN

Interlock Switch position

The earthing switch can only be switched on if all disconnectors assigned to the busbar concerned are OFF.

All disconnectors assigned to the appropriate busbar must be locked. To this effect, a blocking coil is required on each interrogation slide of these disconnectors.


Interlocks - earthing switch on busbar for single and double busbarIn case of remote control, the interlocks must be programmed analogously via the bay computer.

Motor drive (optional) If the crank is inserted or the interrogation slide opened, the motor circuit is interrupted

cylinder lock-type interlock

Blocking coil interlock ogation slide of earthing switch

1 Mechanical lock-out (cylinder lock) with information plate to block the earthing switch (required if no blocking coil-type interlock is being used).

Blocking coil interlocks in a GHA switchgear with bus coupler (example)1 Busbar 12 Busbar 23 Blocking coil on interrogation slide of disconnector in branch circuit panel4 Blocking coil on interrogation slide of earthing switch in bus coupler5 Blocking coil on OFF pushbutton of circuit-breaker (in bus coupler)

21

3333 333 344

5

1

28 GHA EN

GHA

Tabular overview of interlocking functions of various panel typesInterlocks in branch- circuit panels (single busbar)

All mechanical, except if EM (= blocking coil) is specified explicitly Interlocks for single and double busbars apply analogously if the left-hand and right-hand busbar are exchanged In case of remote control, the interlocks must be programmed analogously via the bay computer.

1) Blocking coil-type interlock required. The interrogation slide is blocked if the disconnector in at least one branch circuit in the left-hand busbar section is ON.

- of no significance as regards interlocksblocked crank cannot be inserted or pushbutton blockeddecoupled crank can be inserted, but without switching functionfree operating function releasedEM electro-magnetic interlock (blocking coil)

Schematic diagrams of possible switch positions

Circuit-breaker ON OFF ON OFF OFF

Pushbutton OFF free - blocked - -

Spring mechanism - - - - released

Disconnector left-hand ON/OFF ON OFF OFF ON

Interrogation slide left-hand blocked free free free free

Crank handle - - blocked - -

Disconnector right-hand ON/OFF OFF ON OFF OFF

Interrogation slide right-hand blocked free blocked free free

Crank handle - - - - -

Earthing switch left-hand OFF OFF ON OFF OFF

Interrogation slide left-hand blocked free free free free

Crank handle - decoupled - - decoupled

Earthing slide right-hand OFF OFF OFF OFF OFF

Interrogation slide right-hand blocked blocked EM

1) blocked free free

Crank handle - - decoupled - Right-hand rotation blocked

L R L R

1)

L R L R L R

Blocking coils are required to ensure continuous interlocking systematics at the mechanical operator interface. Alternatively, mechanical lock-outs with cylinder or U lock must be provided.

GHA

29GHA EN

Interlocks regarding branch circuits (double busbar) All mechanical, except if EM (= blocking coil) is specified explicitly Interlocks apply analogously if the positions of disconnectors 1 and 2 are interchanged. In case of remote control, the interlocks must be programmed analogously via the bay computer.


Position of bus coupler

Bus coupler OFF - - Bus coupler ON

Circuit-breaker ON OFF ON OFF ON OFF

Pushbutton OFF free - blocked - free -

Spring mechanism - - - released - -

Disconnector 1 ON (OFF) ON OFF OFF ON ON

Interrogating slide 1 blocked EM free blocked free blocked EM free

Disconnector 2 OFF (ON) OFF OFF OFF OFF OFF OFF

Interrogating slide 2 blocked EM 1) blocked EM 1) free free free free

Crank handle - - blocked - - -

Earthing switch OFF OFF ON OFF OFF OFF

Interrogation slide blocked blocked free free blocked blocked

Crank handle - - - Right-hand rotation blocked - -

12

1)

12

1)

12

12

12

12


1) Blocking coil-type interlock is required if the switchgear comprises a bus coupler. The interrogation slides are locked if the bus coupler is OFF.

Without any bus coupler installed in the switchgear, the interlocks act mechanically.

30 GHA EN


Interlocks in case of bus couplers All mechanical, except if EM (= blocking coil) is specified explicitly Interlocks apply analogously if the positions of disconnectors and/or earthing switches 1 and 2 are interchanged. In case of remote control, the interlocks must be programmed analogously via the bay computer.


Due to its systematic design and accuracy, this interlocking system fulfils all requirements of optimum switchgear interlocking


Circuit-breaker ON OFF ON OFF OFF ON

Pushbutton OFF free - blocked - - blocked 2) EM

Spring mechanism - - - - released -

Disconnector 1 ON (OFF) ON OFF OFF ON ON

Interrogating slide 1 blocked free free free free blocked

Crank handle - - blocked - - -

Disconnector 2 OFF (ON) OFF ON OFF OFF ON

Interrogating slide 2 blocked free blocked free free blocked

Crank handle - - - - - -

Earthing switch 1 OFF OFF ON OFF OFF OFF

Interrogating slide 1 blocked free free blocked EM free free

Crank handle - decoupled - - decoupled decoupled

Earthing switch 2 OFF OFF OFF OFF OFF OFF

Interrogating slide 2 blocked blocked 1) EM blocked blocked EM free free

crank handle - - - - Right-hand rotation blocked decoupled

12

1)

12

12

12

12

2)

12

1) Blocking coil-type interlock required. The interrogation slide is blocked if the disconnector in at least one branch circuit on busbar 1 of the disconnectors is ON.2) Blocking coil-type interlock required. The interrogation slide is blocked if the disconnector in at least one branch circuit on busbar 1 of the disconnectors is ON.

GHA

31GHA EN


B-link - the innovative busbar connection systemThe busbars of each GHA switchgear panel are largely installed in separate gas-filled compartments as required by the system. Thus, they are independent of external environmental influences and integrated into the insulating gas monitoring.To avoid all gas work on site, the connections of the busbars of adjacent GHA panels are established via the innovative B-link system. Like the gas- filled compartments, the robust B-link system does not require any maintenance.

The potential-controlled, ex-ternally grounded and flexible connecting sleeves of the B-link system distinguish themselves by extremely simple assembly and minimum elec-trical field intensities in the field of the high-quality electrical joints.

Busbar systems on the switchgear ends are closed with surge-proof terminal sleeve kits.

The reliabiliy of the thermal and dynamic load-bearing capacity of the current-carrying connections of the B-link system with 40 kA (3s) and a peak current of 100 kA has been checked successfully. Further advantages of the system are:

The design with minimized electrical field intensity on the high-quality electrical joints reduces fault potential due to accidental contamination. On-site assembly of the system is effected under visual supervision (you can see what you are doing). Straightforward and time- saving assembly on site reduces potential, site-specific negative influences. After removing B-link systems from between adjacent panels, an isolating distance can be established by means of end panel components in the busbar run without gas handling.

B-link, connected

SF6SF6

B-link, connected

B-link, open

32 GHA EN


This means a quick recommissioning of the sound busbar sections after a serious malfunction.

If necessary, the resistances can be measured directly and separately for each busbar section, for the complete busbar system or for a complete panel.

Installation of a panel within the switchgear assembly

Releasing the busbar link1 Connecting sleeve2 Clamping contact3 Voltage-proof busbar sleeves

A = Operating conditionB = Isolating distance in the busbar run

GHA

33GHA EN


clearly arranged gas compartment technologyEach gas-filled compartment is autonomous. It is monitored by the gas density information system IDIS. The gas status in the gas-filled compartment is detected by means of a pressure sensor whose electrical signals are retransmitted to the separate IDIS display. The gas status is monitored on the panel front below the control panel on a panel display, and separately for each gas compartment by LEDs in the following colours:

green (OK) yellow (pre-warning level), red (main warning level).

If at least one warning level reacts, this message can be signalled remotely as a common gas warning group signal for the entire switchgear.

Each gas-filled compartment has its own pressure relief device. In case of excess pressure, the pressure is discharged towards the rear part of the switchgear. An additional switchgear pressure relief duct is optionally available.

Pressure sensor, mounted on self-locking disposal connector

IDIS display Display of gas status

Pressure relief of compartments, example: single busbar

34 GHA EN

GHA

Maintenance-free gas compartmentsAll high-voltage components are installed in gas-filled compartments and thus independent of external environmental influences. The GHA gas tanks are made of chromium-nickel-steel. They do not require any maintenance during the switchgears anticipated service life. The gas-filled compartments of the type-tested and metal-enclosed circuit-breaker switchgear systems are sealed pressure systems in accord-ance with lEC 62271-1. This means that they are leakage-proof over their entire service life, so that neither mainten-ance work is required on these gas compartments nor replenishing of gas during the entire service life of the switchgear.

No gas work on siteWith GHA, no gas handling on site is required for erection, extension and dismantling at the end of the service life. All gas-filled compartments are delivered to the site of installation with the rated filling pressure. All gas-filled compartments are completely tested for leakage-proofness in the factory. If necessary, replacement of panels from the switchgear assembly is possible without gas handling and without interfering with the gas-filled compartments of the adjacent panels.

This work is performed without moving the adjacent panels.

Gas compartment monitoring by IDIS information system


Examples: GHA Single busbar

Gas compartments, busbar

Circuit-breaker, gas compartments

Gas compartment connector

IDIS display

Electrical bushing (gas-proof)

Pressure transmitterPressure relief device

I D I S I D I S I D I S I D I S I D I S I D I S

I D I S

Examples: GHA Double busbar

Gas compartments, busbar 1

Gas compartments, busbar 2

Circuit-breaker, gas compartments

Electrical bushing (gas-proof)

Gas compartment connector

Pressure transmitter

Pressure relief device

IDIS display

GHA

35GHA EN

Low-voltage cabinetThe spacious low-voltage cabinet is arranged on top of the GHA switchgear. As an autonomous module, it is fully shrouded and metal-encapsulated, thus segregated from the high-voltage section and from the drive unit. The height of the low-voltage cabinet is 800 mm (panel height 2400 mm). For very ample equipment, a 1200 mm high switch cabinet is optionally available (panel height 2780 mm). The devices for digital and analog displays and for operation are installed into the robust door of the low-voltage cabinet. This includes the master relays, combination devices for line protection, control and monitoring, instruments, electrical actuating elements and switches as well as multimeters. The preferred installation height for devices for operation and adjustment is in the very easily accessible area between 1660 mm and 2000 mm, measured from the panel base. A specific cable laying system ensures optimum utilization of the inner arrangement of the low-vol-tage cabinet. In the top part, it features openings with rubber sleeves in the side plates and the appropriate terminal strips for the overreaching switchgear-specific ring circuits between adjacent panels.

The low-voltage cabinet is mounted onto the GHA panel during erection of the switchgear at the manufacturers or on site. The preassembled connection lines on the low-voltage end between the drive section and the low-voltage cabinet are plugged. The external low-voltage lines are routed upwards from the bottom of the front right-hand panel into the low-voltage cabinet.

Switchgear end plates and panel for operating elementsThe GHA switchgear features one end plate each on the left-hand and right-hand sides. A panel for the operating elements is supplied for each switchgear. This panel can be mounted depending on the local conditions

on one of the switchgear end plates or in the switchgear room.

It accommodates the cranks, the double-bit key and the handle for the voltage transform disconnecting device as well as the switchgear operating manual.

IMOS switchgear control systemTo reduce operating costs in distribution systems, the Intelligent Management und Operating System IMOS can be used optionally for operation and control of medium-voltage switchgear.

IMOS functionalities have been tuned specifically to the requirements of medium-voltage switchgear, including ancillary plants. The modular system covers all the various information within the distribution network. Given the logically designed operator interface, no special knowledge of control systems or training are required of the operators.

The digital protection and measuring relays in the switchgear are autonomous units and have been integrated serially or parallel into the entire switchgear.

If a switchgear control system is used, all interlocking func-tions are performed by microprocessors within the switchgear control system, so that the electromagnetic interlocks can be dispensed with in case of electrical actuations.

Low-voltage cabinet

Panel for operating elements on the switchgear end plate


MICOM bay computer

36 GHA EN

GHA

central screen comprises a fully graphic colour screen; all operating screens appear in the form of logical graphics informs the user about all data of individual sections or about the entire switchgear provides ergonomically designed operating functions in professional design permits continuous operator guidance provides information in clear, non-coded text in long form unrestricted mechanical actuation is possible in case of failure of the auxiliary voltage

Central screen


GemcontrolFully integrated digital control and monitoring of every panel function.

Scaleable design for straightforward and complex tasks Operating elements and display units for straightforward applications from one to six motorized switching devices Stand Alone Base Unit for the following basic features:

Direct control of a motorized switching device Status signals for up to 3 switching devices with integrated backup memory Gemstick Interfaces for all communication applications (serial + Ethernet)

Compatible with air (LIS) and gas-insulated switchgear (GIS) Extension modules for 2 6 motorized switching devices Universal measuring unit for recording and calculation of measurands, and counting

Front Panel Version 1

Front Panel Version 2

Base Unit (BU)

Extension modules

GHA

37GHA EN

Voltage detection system and phase coincidenceVoltage detection systemA pluggable high-resistance (HR) voltage detection system (not integrated) in accordance with IEC 61243-5 and VDE 0682, part 415 or EN 61243-5, is used to determine zero voltage of the outgoing feeders. The multi-way connectors for the voltage indicators are located within the control panel The high-resistance HR indicators designed as e.l.c.b. protected plugs are manufactured by Horstmann.

Phase coincidence In case of the non-pluggable voltage detection systems, phase coincidence is determined by means of HR (high-resistance) phase comparators via integrated, hermetically shielded measuring sockets by means of a phase comparator for HR interfaces (high-resist-ance) in acc. with IEC 61243-5/VDE 0682, part 415.

Optionally, the integrated Volt-age Detecting System IVIS with integrated indicator unit can be used to determine zero voltage. Logic flash arrow symbols on the indicators display the mains voltage still existing within the defined response thresholds. The IVIS system does not require the electrical repeat tests common for volt-age detection systems.

The IVIS system has been designed for maximum oper-ating reliability. It does not require supply from an external source. It features climate-proof encapsulated electronics and is maintenance-free, due to permanent monitoring of the indication thresholds. IVIS satisfies the requirements of IEC 61243-5, VDE 0682, part 415, or EN 61243-5 for integrated voltage detection systems.

Pluggable voltage detection system in acc. with IEC 61243-5 (basic design)

Phase comparator for HR system

Horstmann indicator

IVIS display

Phase comparator MS 100


38 GHA EN

GHA

current transformer in outgoing feeder areaThe current transformers are of toroidal-core transformer design and are mounted on the single-pole, externally earthed bushings in the area of the cable outgoing feeder. The switchgear-specific conductor of the bushings forms the primary conductor: The toroidal-core current transformers are designed as free of cast resin parts subject to dielectric stress.

Up to 5 transformer cores per conductor can be accommodated, taking the maximum admissible transformer stack-ing height into account. The toroidal-core current transformers in the outgoing feeder block are arranged outside of the gas-filled compartments, for the cable connection system

Outer cone-type attached onto the extended cone-type couplers as three-phase toroidal-core current transformer up to 24 kV and max. 1250 A

ID 81 mm, ID 81 mm, stacking height max. 140 mm.

up to 36 kV and max.1250 A ID 81 mm, OD 188 mm, stacking height max. 250 mm.

attached onto the 2 outer cone-type couplers / conductors up to 36 kV and currents > 1250 A up to 2500 A are, for each conductor, toroidal-core current transformers with an oval core and a stacking height of max. 225 mm Toroidal-core current transformers for billing metering A measuring core of the toroidal-core current transformer kit can be implemented for each conductor in a calibratable or calibrated design for billing metering. In combination with a calibratable/calibrated winding in the voltage transformers of the outgoing feeder block or on the busbar, billing metering can be implemented, e.g. in accordance with German regulations.

Toroidal-core current transformerMaximum voltage for operating equipment Um in kV 0,72Rated short-time power frequency withstand voltage in kV 3Rated frequency 50/60 HzContinuous thermal current 1,0 x In (1.2 x In on request)Rated thermal short-time current max. 40 kA, max. 3 sPrimary rated current 50 up to 2500 AMultiratio properties secondary 200-100 up to 2500-1250 ASecondary rated current 1A (5A a request)Number of cores max. 3, higher number on requestCore data (depending on primary rated current)PerformanceClass / overcurrent factor

Measuring core 2.5 up to 10 VA 0.2 up to

1 / M10

Protection core 2.5 up to 30 VA 5 up to

10 / P10 up to P30Admissible ambient temperature max. 60 CStandards IEC 60044-1

Calibratable/calibrated winding for billing metering possible on request

Inner cone mounted on switchgear-specific bushings between the vacuum circuit-breaker and the inner cone-type cable sockets each as single-phase transformer block,

Technical data


Inside diameter 96 mmBus section coupler 1FT, current transformer in the bus-bar runOutside diameter 188 mm

Max. stacking height 220 mm

Inside diameter 185 mm

Outgoing feeder for inner cone-type standard modelOutside diameter 275 mm

Stacking height 235 mm

Inside diameter 185 mm

Outgoing feeder for inner cone-type special designOutside diameter 275 mm

Stacking height 475 mm

GHA

39GHA EN

Voltage transformersSingle-pole metal-encapsulat-ed metallized voltage transformers are directly flange-mount-ed to the GHA switchgear via an inner cone-type plug-in system. The geometrically identical voltage transformers can be utilized functionally

in the outgoing feeder block of a branch circuit, installed in the metal-encapsulated cable connection compartment, as busbar voltage transformers, flange-mounted on top of a single-busbar panel (without additional module width), or as busbar voltage transformer for both busbar systems of a double busbar switchgear with a panel width of 600 mm.

All voltage transformers can be disconnected from high vol-tage via upstream, switchgear-specific disconnecting devices. This disconnecting device with the positions Transformer ON and Transformer earthed must be actuated on the switchgear front in the cable connection compartment and on the de-energized primary current circuit. Voltage transformers on the busbar are actuated in the area of the control panel. Voltage tests on the switchgear or on the connected cables can be performed easily and safely without removal of the voltage transformers or of switchgear components. In the earthed position, voltage transformers, for example, can be replaced safely, as required, while the main circuit remains operative. Voltage transformers with integrated high-voltage fuse in the branch circuit: up to incl. 36 kV available on request.

Technical data Metal-enclosed, single-pole voltage transformersOperating voltage max. kV 12 24 36 40,5

Primary voltage kV

5.0/3 13.8/3 25.0/36.0/3 15.0/3 25.8/36.6/3 17.5/3 30.0/37.2/3 20.0/3 33.0/3

10.0/3 22.0/3 34.5/311.0/3 35.0/3

Secondary voltage V100/3 100/3110/3 110/3

Auxiliary winding for earth fault detection V

100/3 100/3 100/3100/3 100/3 100/3

Secondary, thermal limit current of measuring winding A

7 7 7(12) (12) (12)

Rated voltage factor UN/8h 1.9 1.9 1.9Rated continuing current/8h A 6 6 6

Accuracy class 0.20.510.20.5

1 0.20.51

Performance VA

2060120

2060120 2060120

(30-90-180)

(30-90-180)

(30100200)

Standards IEC 60044-2

Calibratable/calibrated winding for billing metering possible on request

1 Voltage transformer module on busbar2 Toroidal-core current transformer3 Disconnecting device for voltage transformer4 Voltage transformer in outgoing feeder block

1

2

3

4


40 GHA EN

GHA Switchgear modules

Outgoing feeder panels, single busbar SBB

Outgoing feeder panel, outer cone


Variant 1Outgoing feeder panel with inner cone

Outgoing feeder panel with 2 cable connections per phase

Variant 2Outgoing feeder panel with inner cone within a cable tank

1 Busbar gas tank2 Circuit-breaker compartment3 Toroidal-core current transformer4 Outer cone-type connector5 Disconnecting device for voltage transformer6 Voltage transformer7 Cable support8 Cable compartment cover9 Capacitive voltage testing system IVIS10 Insulating gas monitoring, IDIS indicator11 Operator interface12 Low-voltage cabinet13 Busbar link14 Jack rings

1

2

12

3

4

6

14

11

9

8

10

5

13

GHA

41GHA EN

Switchgear modules (contd.)

Outgoing feeder panels, double busbar DBB


Outgoing feeder panel with 2 cable connections per phase

Variant 1Outgoing feeder panel with inner cone

Outgoing feeder panel, SBB outer cone

1 Busbar gas tank BB22 Busbar gas tank BB13 Circuit-breaker compartment4 Toroidal-core current transformer5 Outer cone-type connector6 Disconnecting device for voltage transformer7 Voltage transformer8 Cable support9 Cable compartment cover10 Capacitive voltage testing system IVIS11 Insulating gas monitoring, IDIS indicator12 Operator interface13 Low-voltage cabinet14 Busbar link15 Jack rings

Variant 2Outgoing feeder panel with inner cone within a cable tank

1

3

13

4

5

7

15

12

10

9

11

6

132

8

14

42 GHA EN

GHA

Bus section coupler SBB Ir < 2000 A

Bus section coupler SBB Ir < 2500 A


Bus section coupler single busbar SBB

Bus section coupler SBB

1 Busbar gas tank BB22 Busbar gas tank BB13 Circuit-breaker compartment4 Toroidal-core current transformer5 Test socket (option)6 Cable compartment cover7 Insulating gas monitoring, IDIS indicator8 Operator interface9 Low-voltage cabinet10 Jack rings

2

3

9

4

10

8

7

6

5

1

GHA

43GHA EN


Bus section couplers double busbar DBB

1 Bus section coupler, busbar 22 Bus section coupler, busbar 13 Busbar gas compartment tank BB2 The other items are identical with bus section coupler SBB.

Bus section coupler DBB

Bus sectionalizer in 2 module widths DBB

12

31

2

44 GHA EN

GHA Switchgear modules (contd.)

DBB bus coupler, busbar earthing switch, metering panel

DBB Busbar earthing switchDBB Bus coupler

DBB Metering panel with disconnectable busbar voltage transformers

GHA

45GHA EN


Busbar attachments for single busbar switchgear

Disconnectable voltagetransformer, variant 1

Disconnectable voltagetransformer, variant 2

Busbar earthing switch

Busbar surge arrester, variant 2Busbar surge arrester, variant 1

46 GHA EN

GHA Range of products

Explanations1 Disconnector - earthing switch (three-position switch)2 Circuit-breaker3 Pluggable voltage detection system4 Current transformer5 Voltage transformer, disconnectable with inner cone6 Outer cone-type cable connector7 - for 2 cables/phase up to 630mm2 cable cross section or 1 cable + surge arrester8 - for 3 cables/phase up to 300mm2 cable cross section or 2 cables + surge arrester9 Voltage transformer module on busbar with/without disconnecting device10 Busbar earthing switch11 Busbar surge arrester

Gas-insulated compartments

Air-insulated compartments

1

2

35

8

64

7

9 10 11

SBB with outer cone-type connector

DBB with inner cone-type connector

1 Double busbar2 Current transformer in air- insulated compartment3 Cable test sockets4 Inner cone-type multiple connection tank

11

2

34

2

1) 2) 3)

GHA

47GHA EN

Main dimensionsSingle busbar panel SBB

Double busbar panel DBB

1990 4)

2380

3)27

80

1700 1) 2)

1) depending on refrigerating attachments 1860 bis 1975 mm2) bus section coupler (2500 A) 2030 mm3) bus section coupler(2500 A) 2030 mm with damping resistor 4) bus section coupler (2500 A) 2200 mm5) pressure transmitter

800 1

200

with pressure relief duct 600(800)(900)

(1000)

5)

2380

2)

2780

1330 1) 1595

1) depending on refrigerating attachments 1380 mm2) with damping resitor +150 mm3) pressure transmitter

2400

800 1

200

600

with pressure relief duct(800)(900)

(1000)

2315

3)

Range of products (contd.)

48 GHA EN

GHA

Single busbar SBBwith outer cone-type couplers / phase up to 36 kV

Components fitted Circuit-breaker Disconnector and earthing switch (three-position switch) Toroidal-core current transformer Flange-mounted, disconnect-able voltage transformers (option) Capacitive pick-ups Cable connection cone-type couplers

Optional: Busbar voltage transformer or Busbar earthing switch or Busbar surge arrester Disconnector and earthing switch (three-position switch) Toroidal-core current transformer Flange-mounted, disconnect-able voltage transformers (option) Capacitive pick-ups Cable connection cone-type couplers

Optional: Busbar voltage transformer or Busbar earthing switch or Busbar surge arrester Toroidal-core current trans-former Flange-mounted, disconnect-able voltage transformers (option) Capacitive pick-ups Cable connection cone-type couplers

Optional: Busbar voltage transformer or Busbar earthing switch or Busbar surge arrester

Outer cone-type cable connector: single cable connector double or single with surge arrestor triple or double with surge arrestor

Rated normal current,

outgoing feeder

Module width Depth

Height with low-

voltage cabinet Weight

800 mm

1200 mm

A mm mm mm mm approx kg8001250 600 1330 2380 2780 700

1) 2) 3) 1) 2) 3)

1) 2) 3)

Circuit-breaker panel with outer cone-type connector

Bus riser with outer cone-type coupler

Busriser/disconnector/earthing switch with outer cone-type coupler

Height with busbar attachments1) 2) 3)

mm mm mm2485 2290 2840/2318


GHA

49GHA EN

Single busbar SBBwith outer cone-type couplers up to 36 kV

Rated normal current, outgoing

feeder

Module width Depth

Height with low- voltage

cabinet Weight

1200 mmA mm mm mm mm aprox kg

160020002500

800800900

1330 2380 27808009001100

Circuit-breaker panel with 2 outer cone-type couplers/phase

Busriser/disconnector/earthing switch with 2 outercone-typecouplers/phase

Bus riser with 2 outer cone-typecouplers/phase

Components fitted

Circuit-breaker Disconnector and earthing switch (three-position switch) Toroidal-core current transformer Flange-mounted, disconnectable voltage transformer (option) Capacitive pick-ups Cable connection cone-type couplers Disconnector and earthing switch (three-position switch) Toroidal-core current transformer Flange-mounted, disconnectable voltage transformer (option) Capacitive pick-ups Cable connection cone-type couplers Toroidal-core current transformer Flange-mounted, disconnect-able voltage transformer (option) Capacitive pick-ups Cable connection cone-type couplers

Outer cone-type cable connector: 2 x single cable connector 2 x double or single with surge arrestor 2 x triple or double with surge arrestor


50 GHA EN

GHA

Single busbar SBBwith inner cone-type couplers up to 405 kV

Components fitted

Circuit-breaker Disconnector and earthing switch (three-position switch) Toroidal-core current transformer Capacitive pick-ups Inner cone-type cable couplers

Optional: Disconnectable, flange-mounted voltage transformers Cable test sockets Busbar voltage transformer or Busbar earthing switch or Busbar surge arrester Disconnector and earthing switch (three-position switch) Toroidal-core current transformer Capacitive pick-ups Inner cone-type cable couplers

Optional: Flange-mounted, disconnect-able voltage transformers Cable test sockets Busbar voltage transformer or Busbar earthing switch or Busbar surge arrester Toroidal-core current transformer Capacitive pick-ups Inner cone-type cable coup-lers

Optional: Flange-mounted, disconnect-able voltage transformers Cable test sockets Busbar voltage transformer or Busbar earthing switch or Busbar surge arrester

Inner cone-type cable coupler: single, size 2 or 3


feeder

Module width Depth


cabinet Weight800 mm

1200 mm

A mm mm mm mm aprox kg8001250 600 1330 2380 2780 900

Height with busbar attachments1) 2) 3)

mm mm mm2485 2290 2840/2318


Circuit-breaker panel with single inner cone-type coupler

1) 2) 3)

Bus riser with single innercone-type coupler

1) 2) 3)

Busriser/disconnector/earthing switch with single inner cone-type coupler

1) 2) 3)

GHA

51GHA EN


Components fitted

Circuit-breaker Disconnector and earthing switch (three-position switch) Toroidal-core current transformer Capacitive pick-ups Inner cone-type cable coupler, size 3

Optional: Flange-mounted, disconnect-able voltage transformers Cable test sockets Disconnector and earthing switch (three-position switch) Toroidal-core current transformer Capacitive pick-ups Inner cone-type cable coupler, size 3

Optional: Flange-mounted, disconnect-able voltage transformers Cable test sockets Toroidal-core current transformer Capacitive pick-ups Inner cone-type cable coupler, size 3

Optional: Flange-mounted, disconnect-able voltage transformers Cable test sockets

Inner cone-type cable coupler: double, size 2 and 3 triple, size 2 and 3 quadruple, size 2 and 3 Surge arrester acc. to customers request


feeder

Module width Depth



1200 mm

A mm mm mm mm aprox kg160020002500

600600900

13301380 2380 2780

90010001300


Circuit-breaker panel with multiple inner cone-type coupler

Busriser/disconnector/earthing switch with multiple inner cone- type coupler

Bus riser with multiple inner cone-type coupler

52 GHA EN

GHA


Components fitted

Circuit-breaker Disconnector and earthing switch (three-position switch) Toroidal-core current transformer Capacitive pick-ups Inner cone-type cable coup-ler, size 4 Disconnector and earthing switch (three-position switch) Toroidal-core current transformer Capacitive pick-ups Inner cone-type cable coup-ler, size 4 Toroidal-core current transformer Capacitive pick-ups Inner cone-type cable coupler, size 4

Inner cone-type coupler:Fully insulated, capacitor- controlled conductor barsup to 1600 A = size 32000, 2500 A = size 4


feeder

Module width Depth



1200 mm

A mm mm mm mm aprox kg800 up to1600

20002500

600800900

1330 2380 2780 9001300


Circuit-breaker panel with fully insulated, capacitor-controlled busbars in the outgoing feeder

Busriser/disconnector/earthing switch with fully insulated, capacitor-controlled busbars in the outgoing feeder

Bus riser with fully insulated, capacitor-controlled busbars in the outgoing feeder

GHA

53GHA EN

Single busbar SBBBus section coupler up to 405 kVFacility for earthing both busbar sections by crossover earthing

Bus sectionalizer up to 405 kV

Busbar measurement up to 405 kV

Components fitted Circuit-breaker 2 x disconnector and earth-ing switch (three-position switch)

Optional Toroidal-core transformer Test sockets

Components fitted Disconnector

Components fitted Current transformer


feeder

Module width Depth



1200 mm

A mm mm mm mm aprox kg800 up to 12501600 up to 2000

2500

8008001000

134013801340

2380 278090010001300


feeder

Module width Depth



1200 mm

A mm mm mm mm aprox kg

up to 2500 600 1340 2380 2780 300


feeder

Module width Depth



1200 mm


up to 2500 600 1340 2600 2780 300


Bus section coupler

Bus sectionalizer

Current transformer in the busbar run

54 GHA EN

GHA

Double busbar DBBwith outer cone-type couplers up to 36 kV

Components fitted

Circuit-breaker Disconnector and earthing switch (three-position switch) Disconnector Toroidal-core current transformer Capacitive pick-ups Cable connection cone-type couplers

Optional: Flange-mounted, disconnect-able voltage transformers Disconnector and earthing switch (three-position switch) Disconnector Toroidal-core current transformer Capacitive pick-ups Cable connection cone-type couplers

Optional: Flange-mounted, disconnect-able voltage transformers

Outer cone-type cable coupler: single cable connector double or single with surge arrestor triple or double with surge arrestor 4


feeder

Module width Depth



1200 mm


8001250 600 1700 2380 2780 900


Circuit-breaker panel with outer cone-type connector

Busriser/disconnector/earthing switch with outer cone-type coupler

GHA

55GHA EN

Double busbar DBBwith outer cone-type couplers up to 36 kV

Components fitted

Circuit-breaker Disconnector and earthing switch (three-position switch) Disconnector Toroidal-core current transformer Capacitive pick-ups Cable connection cone-type couplers

Optional: Flange-mounted, disconnect-able voltage transformers Disconnector and earthing switch (three-position switch) Disconnector Toroidal-core current transformer Capacitive pick-ups Cable connection cone-type couplers

Optional: Flange-mounted, disconnect-able voltage transformer (option)

Outer cone-type cable coupler: 2 x single cable connector 2 x double or single with surge arrestor 2 x triple or double with surge arrestor


feeder

Module width Depth



1200 mm


800800900

170018601860

2380 278090012001400

Circuit-breaker panel with 2 outer cone-type couplers/phase

Busriser/disconnector/earthing switch with 2 outercone-typecouplers/phase


56 GHA EN

GHA

Double busbar DBBwith inner cone-type couplers up to 405 kV

Components fitted

Circuit-breaker Disconnector and earthing switch (three-position switch) Disconnector Toroidal-core current transformer Capacitive pick-ups Inner cone-type cable couplers

Optional: Flange-mounted, disconnect-able voltage transformers Cable test sockets Disconnector and earthing switch (three-position switch) Disconnector Toroidal-core current transformer Capacitive pick-ups Inner cone-type cable couplers


Inner cone-type cable coupler: single, size 2 or 3


feeder

Module width Depth



1200 mm


8001250 600 1700 2380 2780 1100


Circuit-breaker panel with single inner cone-type coupler


GHA

57GHA EN

Double busbar DBBwith inner cone-type couplers up to 405 kV

Components fitted

Circuit-breaker Disconnector and earthing switch (three-position switch) Disconnector Toroidal-core current transformer Capacitive pick-ups Inner cone-type cable coupler, size 3

Optional: Flange-mounted, disconnect-able voltage transformers Cable test sockets Disconnector and earthing switch (three-position switch) Disconnector Toroidal-core current transformer Capacitive pick-ups Inner cone-type cable coupler, size 3


Inner cone-type cable coupler: double, size 2 or 3 triple, size 2 or 3 quadruple, size 3

Surge arresters according to customers request

Rated normal current,

outgoing feeder

Module width Depth



1200 mm


800800900

170018601860

2380 2780110014001600


Circuit-breaker panel with multiple inner cone-type coupler


58 GHA EN

GHA

Double Busbar DBBwith inner cone-type couplers up to 405 kV

Components fitted

Circuit-breaker Disconnector and earthing switch (three-position switch) Disconnector Toroidal-core current transformer Capacitive pick-ups

Optional: Flange-mounted, disconnect-able voltage transformers Cable test sockets Disconnector and earthing switch (three-position switch) Disconnector Toroidal-core current transformer Capacitive pick-ups Inner cone-type cable coupler, size 4


Inner cone-type cable coupler:Fully insulated, capacitor- controlled conductor barsup to 1600 A = size 32000, 2500 A = size 4


feeder

Module width Depth



1200 mm

SE GHA SWG Catalogue

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Transcript of SE GHA SWG Catalogue