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Hng dn s dng(DET3TC

HNG DN S DNG

MY O IN TR NI T DET3TC

THNG S K THUT

DET3TC

Mc bo v: IP54

Kh nhiu: 40V pk-pk

in p u ra: 25V, 50V 128Hz

Dng in: 4,5mA hoc 0,45mA

Thang dng in t: 0,5mA n 19,9A

Thang in p t: 0 n 100VacThang in tr: 0,01 n 2k

in tr cc o ln nht: 100k 50V v 50k 25V

Cp chnh xc gi tr in tr: 2% 3 digits, 5% 3 digits i vi o ART v 7% 3 digits o cc.

Pin: 8xAA (LR6)

Nhit vn hnh: -15C n +55C / 5F n 131FNhit bo qun: -40C n +70C / -40F n 158FKch thc: 203mm x 148mm x 78mm / 8in x 5.8in x 3inTrng lng: 1 kg / 2.2 lb

ICLAMPThang o: 1mA n 1200A

T s: 1000/1

u ra: 1mA/A

Cp chnh xc:

1mA n 100 mA : 3% gi tr c 0.1 A n 1 A : 2% gi tr c

1 A n A : 1% gi tr c

10 A n 100 A : 0.5% gi tr cNhit vn hnh: -10C n +50C / 14F n 122FNhit bo qun: -20C n +70C / -4F n 158FKch thc vt dn ln nht: 52mm

Mc bo v:IP40

Dng nh mc: 1200A trong 20 pht

in p inh mc: 600V

m hm: 57mm

CC CNH BO AN TON Cc cnh bo an ton v cc s phng nga phi c c, hiu r trc khi s dng thit b ny.

Khng c thit b ni vi h thng cn th nghim khi khng s dng.

Khng c s vo phn mch kt ni, cc phn t kim loi l ra ngoi khi thit lp php o hoc ca thit b khi th nghim.

Khng c s vo cc cc o, dy o, v cc u cc ca n khi thit b ang hot ng. Khng c vn hnh thit b hoc kt ni ti bt c h thng ngoi no nu c bt k du hiu tim n v s ph hy hoc n c lu gi trong mt thi gian di vi cc iu kin khng thun li.

Khng c vn hnh thit b hoc kt ni ti bt c h thng ngoi no nu pin hoc v b h hoc thiu bt c thnh phn no trn b mt ca v thit b.

Cn c s phng nga c bit cn thit khi s dng thit b trong cc trng hp khi o h thng ni t vi cc thit b in ang vn hnh. Cn c s phng nga c bit cn thit khi lm vic gn h thng in cao p: gng v ng nn c s dng.

Cn c s phng nga c bit cn thit khi lm vic iu kin m t, cc khu vc nng nghip: ch tun th cc nguyn tc, tiu chun bo h lao ng, cn c cc s phng nga cn thit v khng c chm vo dy dn bng tay khng.

Lun lun ngt thit b ra khi h thng ni t c th nghim khi thay th pin hoc cu ch. Lun thay th pin v cu ch ng chng loi v dng nh mc.PHNG NGA AN TON I VI TH NGHIM H THNG LIVE EARTHTh nghim i vi h thng ni t vi cc thit b in ang vn hnh hoc th nghim di iu kin c xy ra s c. Cc ch an ton sau y cn c bit quan tm:

Tt c mi ngi phi c o to v hiu r cc th tc an ton, cch ly vi h thng lm vic. Phi nm r cc qui nh an ton, khng c chm vo cc ni t, cc o, cc dy dnKhuyn co nn s dng gng, ng, v thm cch in khi lm vic. Cc ni t cn o nn cch ly ra khi mch n ang bo v trc khi php th c thc hin. Nu iu ny l khng th th ART c th c s dng o in tr ca cc ny.

Cc ni ca thit b n h thng c th nghim nn thng qua b ngt, n c tc dng iu khin c cc dng in v in p ln nht c th xy ra khi ang thc hin php o. B phn ny phi c m khi con ngi chm vo cc cc o, dy ni Cc ni ca thit b n h thng c th nghim nn thng qua cc cu ch.LP T PINCh : Khi pin c lp t hoc thay th th khng c bt k kt ni no t u cc ca thit b v thit b phi c tt.

Ch : trnh ph hy bi dng r in phn hoc dng x, khng nn pin trong thit b trong thi gian di khng s dng.Ch : Lp pin sai cc tnh l nguyn nhn gy ra dng r in phn v gy ph hy thit b. Nu ch th cho thy pin cha c np y khi pin cn mi th c th 1 pin no trng thi b ngc.TNH NNG CHUNG CA DET3TC

T ng kim tra cc C

T ng kim tra cc P

T ng kim tra nhiu

Loi nhiu 40V (pk-pk)

S th nghim 2 dy, 3 dy

Thang o 2k

Khng th nghim ngt kt ni (ART)

o in p nhiu vi t

o dng

Hin th LCD

Bo v IP54 chng bi v nc

m bo tiu chun an ton EN61010-1HP B DET3TC BAO GM: Thit b o DET3TC Dy o (chiu dai gm c 3m, 10m v 15m) Cc th nghim (2 cc) Pin loi 8xAA (LR6) Th bo hnh Chng ch hiu chnh CD hng dn s dng Ti ngHNG DN VN HNH

in p u ra ca thit b ln nht l 50V. C th gim mc in p ny xung cn 25V ty thuc vo tng trng hp th nghim. in p th nghim ph hp c la chn bi ngi vn hnh v tun theo cc iu kin an ton.Th tc thay i in p u ra nh sau: n nt 25V/50V sau khi chn ch th nghim, mn hnh LCD s hin th in p u ra c la chn. ch o ART, in p u ra c nh l 25V v khng thay i c.

Ch ko di thi gian hot ng ca pin, thit b s t ng tt sau 6 pht k t ln hot ng cui cng. Thit b s hot ng tr li khi chuyn cng tc iu khin qua OFF v chn cc ch hot ng.

CC K HIU HIN THK hiu ngha

Tam gic cnh bo

Cu ch

Ch th pin

Tnh trng ph hp vi php o ART

Tnh trng khng ph hp vi php o ART

Ch th in p nhiu vi t vt qu kh nng o ca thit b

Cc p (P) l ng

in tr ca cc p (P) cao, vt qu tnh chnh xc ca php o

Cc dng (C) l ng

in tr ca cc dng (C) cao, vt qu tnh chnh xc ca php o

in p nhiu vi t nm trong phm vi cho php ca php o in tr

in p nhiu vi t nm ngoi phm vi cho php ca php o in tr

ICLAMP v VCLAMP c kt ni

ICLAMP v VCLAMP cha c kt ni

Dng ICLAMP

Dng ICLAMP cha

MINH HA THIT B DET3TC

Kt ni dy dn th nghim (mt sau ca thit b)

CH TH TRNG THI PINTrng thi hin th ca pin nh sau khi thit b c khi ng:

Cn 100% pin

Cn 75% pin

Cn 50% pin

Cn 25% pin

Cn mt t, thit b c th tt ngun bt c khi no

Cn 0% pin, thit b s t ng tt ngun

M T CC PHP O IN TRNguyn l php o 2 cc (2 im)K thut ny dng o in tr gia 2 im ni t, gia mt cc t cha bit in tr v mt cc ni t tt nh ng kim loi chn di t hoc cc cc st ca cc ta nh

DET3TC s bm dng AC bit bin v o in p ri nh hnh 1. in tr s c tnh ton n gin theo nh lut Ohm, R=U/I.

DET t ng kt ni C1-P1 v C2-P2 khi chn s o 2 cc.

Hnh 1: S php o in tr 2 ccNguyn l php o 3 cc (3 im)Phng php ny c m t nh hnh 2. in tr ni t cng c tnh ton n gin da vo nh lut Ohm. i vi k thut o ny, cc p c di chuyn theo nhng khong cch c nh gia cc dng v h thng o. i vi tng v tr, ghi li s liu v hnh thnh mt th, gi tr in tr ca h thng l im m trn th n v tr phng (nm ngang). Phng php ny c th n gin thnh phng php 62% tc l v tr cc p v tr 62% khong cch gia cc dng v h thng o, tc l: A=0,62xB.

Hnh 2: S php o in tr 3 ccTrong hnh ny, C1 v P1 c ni chung vi cc ca h thng c th nghim bng 2 dy dn ring bit, s ny ch p dng cho my o 4 cc. Cn i vi my o 3 cc (DET3TC) th ch c P1 hoc u X c ni vi cc ca h thng o nh hnh 3.

Hnh 3: S o in tr 3 cc i vi my o 3 ccNguyn l php o in tr 3 cc s dng ARTTrong s o in tr bng phng php 3 cc c mt hn ch l cc cn o phi tch ra khi h thng. Nu khng tch ra th kt qu o c s l kt qu o cho c h thng, khng phi kt qu ca ring cc cn o. Bng cch s dng ampe km ICLAMP o dng chy qua cc cn o, DET3TC c th o c kt qu ring ca cc cn o. K thut ny c th hin qua hnh sau y.

Hnh 4: S o in tr dng ARTCC PHP O I VI DET3TCK thut o in p nhiu t1. Nm iu khin xoay ca thit b v tr OFF2. Kt ni s nh hnh sau:

3. Xoay nm cng tc iu khin v tr V4. Gi tr in p nhiu s hin th nh hnh sau:

Ch :

Thit b hin th tam gic cnh bo v ch th in p nhiu ln khi vt qu 40V pk-pk.

Thit b hin th tam gic cnh bo v tnh trng qu thang nu ln hn 100V.

K thut o in tr s dng 2 cc

1. Nm iu khin xoay ca thit b v tr OFF2. Ni s nh hnh sau:

3. iu chnh nm cng tc v tr 2P4. Chn in p th nghim bng nt 25V/50V5. n v nh nt TEST

6. Thit b bt u thc hin php o

7. Kt qu c th hin nh sau:

Ch :

in p o trong php o ny l AC, c th khng ph hp vi mt s qui nh ca nh qun l a phng. Thit b hin th tam gic cnh bo v ch th in p nhiu tng cao nu in p nhiu t qu 40V pk-pk.

Thit b hin th tam gic cnh bo v ch th qu thang in p nu in p nhiu qu 100V v php o s khng thc hin trong trng hp ny.K thut o in tr s dng 3 cc

1. Nm iu khin xoay ca thit b v tr OFF2. Ni s nh hnh sau:

3. iu chnh nm cng tc v tr 3P4. Chn in p th nghim bng nt 25V/50V5. n v nh nt TEST

6. Thit b bt u thc hin php o

7. Kt qu c th hin nh sau:

Ch :

Thit b hin th tam gic cnh bo v ch th in p nhiu tng cao nu in p nhiu t qu 40V pk-pk.

Thit b hin th tam gic cnh bo v ch th qu thang in p nu in p nhiu qu 100V v php o s khng thc hin trong trng hp ny.K thut o dng t

Trc khi thc hin php o, ch thc hin hiu chnh ICLAMP.

1. Nm iu khin xoay ca thit b v tr OFF2. Ni s nh hnh sau:

3. ng cng kp ca ICLAMP quanh cc cn o4. iu chnh nm cng tc xoay v tr A5. Dng chy qua vt dn nh hnh sau:

Ch :

Thit b hin th tam gic cnh bo trn 2A php o ART khng thc hin trong trng hp ny.

Thit b hin th tam gic cnh bo v trng thi qu thang nu ln hn 20A - php o ART khng thc hin trong trng hp ny.

K thut o in tr s dng 3 cc vi ART

1. Nm iu khin xoay ca thit b v tr OFF2. Ni s nh hnh sau:

3. ng cng ICLAMP quanh cc cn o

4. Chn nm iu khin xoay v tr 5. n v nh nt TEST6. Thit b s bt u thc hin php o

7. Kt qu s hin th nh sau:

8. Trong s trng hp, thit b hin th cnh bo nhiu nh sau:

iu ny c ngha l nhiu c pht hin v c kh nng gy gim chnh xc ca php o. C th l, gi tr hin th c th thp hn gi tr tht ca in tr. in tr ca cc hoc h thng cn o nn c xc nh li bng mt phng php khc.

Ch :

Thit b s hin th tam gic cnh bo v ch th in p nhiu cao nu in p nhiu t vt qu 40V pk-pk (14V Rms). Thit b s hin th tam gic cnh bo v tnh trng qu thang in p nu in p nhiu t vt qu 100V khng c gi tr in tr hin th trn mn hnh.

Thit b s hin th tam gic cnh bo qu 2A khng c php o ART c thc hin.

Thit b s hin th tam gic cnh bo, v tnh trng qu thang trn 20A khng c php o ART c thc hin.

Phi chc chn rng b mt tip xc ca cc chn ICLAMP phi sch, khng nhim bn v tip xc tt khi ICLAPM kp li.

Cc dng in chy t cc vt dn ln cn n ICLAMP c th tc ng n php o v lm gim chnh xc ca php o.Hiu chnh ICLAMPICLAMP nn c hiu chnh mt ln mi php o hin trng xem xt n s nh hng ca qu trnh vn chuyn, nhit , m1. Nm iu khin xoay ca thit b v tr OFF

2. Kt ni s nh hnh sau:

3. Chc chn ICLAMP khng kp xung quanh mt vt dn no.

4. n v gi nt TEST, bt thit b t ON n A s dng cng tc xoay iu khin.

5. Nh nt TEST.

6. n v gi nt TEST khi n khi gi tr 0 hin trn mn hnh.

7. Ni X v C vi nhau.

8. Kp ICLAMP quanh dy ni X v C nh hnh sau:

9. n v gi nt TEST khi n khi gi tr 100 hin trn mn hnh.

10. Xoay nm iu khin v v tr OFF.

11. Php hiu chnh ICLAMP hon thnh, php hiu chnh ny c lu gi trong b nh ca thit b.

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