Qui trnh s dng A - 70

I- hng dn s dng

thit b to cao p dc - pts130

1. u ni s :

Ni t khi iu khin & khi Cao p

Ni cp iu khin t khi iu khin n khi cao p

Ni cp Cao p vo khi cao p v ni n i tng th nghim

Ni u cui ca i tng th nghim vo LOAD RETURN ca khi iu khin.

Kho lin ng EXT INTLK phi c cm vo ng v tr trn khi iu khin.2. t thang o dng in CURREN METER ( Thang o mu en ) v nc cao nht X10K. Thang mu en vi gi tr ton thang l 1 mA DC vi cc nc nhn t X1 n X 10K Thang mu vi gi tr ton thang l 100 ( 1M( vi cc nc nhn t X0,1 n X 1K3. t gii o VOL METER LOW hoc HIGH ph hp vi in p cn to ra.

Khi t LOW c gi tr thang di ca ng h vn vi gii hn ton thang l 60 KV

Khi t HIGH c gi tr thang pha trn ca ng h vn vi gii hn ton thang l 120 KV

4. Chn s th nghim GROUND hoc GUARD bng cch chuyn i cng tc ti RETURN MODE trn mt khi iu khin.

5. Bt ngun bng nt MAIN POWER ( n ngun mu sng )

6. t v tr nm xoay t ngu 0 v nhn nt ON HIGH VOLTAGE pht cao p, phng c cao p.

7. Xoay t ngu chm theo chiu kim ng h cho n khi in p cn to ra t c.8. Chuyn nm CURREN METER n thang o thch hp c dng in qua i tng th nghim ng h ampe.

9. Kt thc th nghim gim t ngu v 0 n nt OFF HIGH VOLTAGE ngt cao p, PTS s t ng tip a.

Ch :

m bo tuyt i an ton dng xo tip a ngoi mc vo i tng th nghim trc khi tho s .

Thang mu ca CURREN METER dng o in tr cch in nh sau:

Rc = Nc nhn mu x UPht x Gi tr c Megom. S th nghim ca thit b PTS 130.

II- hng dn s dng cu o tg( loi p5026

Tt c cc nhn vin trc khi s dng thit b , phi c k quyn hng dn s dng, nm vng cch u ni v thc hin cc bin php an ton, trnh t tin hnh cng vic nh sau:

1. Kim tra v tr hay t trn khi chnh: Kho iu chnh nhy "YBCTBUTE(bHOCTb" v tr "0".

Cc nm iu chnh R3 t v tr 50 (.

Dy nm iu chnh C4 t v tr 0,001 (F

Kho SA2 v tr " 1 " ( +tg( )

Kho SA1 v tr d kin gi tr in dung c o khi lm vic in p cao.

Ch : Nu kho SA1 t v tr o in p thp khi chuyn v o v tr in p cao cn phi n nt " " v sau xoay n v v tr vch sn t v tr nh chn.

Nu tr s in dung i tng o cha bit th kho chuyn mch SA1 cn t v tr " 3 ".

2. ng nt " CETb " ca khi chnh lc ny n chiu sng micro- ampe k phi sng.

3. t kho " YBCTBUTE(bHOCTb " vo v tr m kim ca microampe lch khong 20 n 30 microampe.

4. La chn kho chuyn mch SA1 t v tr sao cho kim ca microampe lch nh nht khi khng cho php n nt " ".

5. iu chnh chn v tr kim ca micro-ampe nm gn v tr "0" ca thang o bng cch iu chnh ln lt R3 v C4 n khi ch th cn bng ng vi nhy ln nht.

6. Qu trnh cn bng tip theo s kt thc v tr ca nm iu chnh nhy " YBCTBUTE(bHOCTb " khi s thay i trn R3 va C4 n gi tr bng mt na gii hn sai s o c bn cho php c ch bng lch ca kim micro-ampe khng nh hn 0,5 mm.

Ch : nhy ln nht cn bng c kt thc khi thay i R3 v C4 gi tr nh nht kim ca ampe k lch khi v tr " 0 ".

7. Ghi cc gi tr R3 v C4, v tr kho chuyn mch R4, SA1 v SA2 trn khi chnh ;kho cc tnh SA2.

8.. Gim nhy ca b ch th cn bng, chuyn kho SA2 v v tr ( + tg( ).

Tin hnh hiu chnh li R3 v C4 theo trn v ghi li cc gi tr ca R3 v C4.

9.. t chuyn mch nhy " YBCTBUTE(bHOCTb " v v tr " 0 " chuyn b chuyn mch cc tnh ca li SA2 sang v tr khc, nu cch in ca i tng o khng b hng hoc khng b phng in bng xung in p th nghim khi chuyn mch. Trong trng hp ngc li trc khi chuyn mch cn gim in p th nghim bng thit b iu chnh sau tng dn ln n ln yu cu.

10.. Tin hnh iu chnh ( cn bng ) cu cn ph hp theo cc mc nh trn.

11.. Kho chuyn mch nhy " YBCTBUTE(bHOCTb " t v v tr " 0 " nh thit b iu chnh gim in p th nghim v khng, ct kho SA1 .

12. Tho b ro chn khng li gn thit b nm di in p cao, dng so cch in t ni t tm thi trn u ra cao p ca MBA th nghim sau gii to s .

III- Qui trnh s dng ODEN-AT

th ptmt v My ct h th c In 2000 A

I/ Cng tc chun b v thao tc trn ODEN-AT.

1. Tip a v ODEN-AT bng dy chuyn dng.

2. Ni cc khi to dng trn ODEN-AT theo s ni tip hoc song song cc khi. ( C th dng mt khi dn khi cc khi khc khng s dng tch ra khng ni ti khi iu khin ).

3. Ni ngun 380VAC ti ODEN -AT thng qua gic cm ngun chuyn dng.

4. Khi ng ODEN-AT bng cng tc nm pha bn tri khi iu khin. Quan st cc qut lm mt ca khi to dng phi u lm vic.

5. Ni u ra dng ca ODEN-AT ti ptmt c th nghim.

6. Cc thao tc trn khi iu khin khi th ptmt ca ODEN-AT nh sau:

6.1 n ch bo OPERATE OFF ( Khng sng ).

6.2 Phn iu chnh dng ra CURRENT ADJUST v tr thp nht( Gi tr nh hn gi tr dng ct ca ptmt c th nghim ).

6.3 n nm HOLD n Led sng.

6.4 n nm AUTO OFF n Led STOP INPUT sng.

6.5 n nm pha tri trong mng STOP INPUT chn INTn Led sng.

6.6 n Led HIGHT I mng OUTPUT sng ( khng chn 0-30 V/ 60 ).

6.7 Chn ch lm vic mng OUTPUT. n nm chn ch lm vic theo s u ra ca ODEN-AT, cc khi to dng ni tip "SERIES " hay song song " PARALLEL ", khi chn ch no th n Led ch th ch s sng.

6.8 Bt ptmt F2 t v tr ct " O " sang v tr ng " I ".

6.9 Vic to dng bt u bng vic n nm ON+TIME n Led OPERATE sng. tng dng u ra bng cch s dng cc nm tng th "COARSE" v chnh tinh "FINE". Dng c tng cho n khi ptmt c th lm vic,khi n Led LATCHED trong mng STOP INPUT s sng.

6.10 Khi ptmt c th nghim ct gi tr dng ct v thi gian ct c lu gi trn mn hnh ch th. c cc gi tr v lu li.

6.11 Gim dng in v n nm OFF mng OPERATE n Led OPERATE tt.

6.12 Bt ptmt F2 t v tr ct " I " sang v tr ng " O ".

II/ Cc ch khi s dng ODEN-AT.

1. th vic ct nhanh ca thit b in vi dng ct cao, vi mc ch hn ch s pht nhit khi dng ln ta c th khng ch thi gian pht dng nh nm MOM ON. Nu ta n nm ny dng s pht ra v nu b tay ra dng s b ct, hoc c th s dng chc nng AUTO OFF khng ch thi gian pht dng.

2. trnh s pht nhit khi pht dng ln ban u c th s dng nm I/30 gim dng pht ra i tng th nghim trong qu trnh th c tnh ct ngn mch i hi dng cao pht gn nh tc thi trong thi gian rt ngn.

3. Sau khi kt thc vic th nghim bt kho bn tri khi iu khin v v tr ct"O" ct ngun cp ti ODEN-AT y np bo v li.

4. Khi s dng ch mt khi to dng lm vic th ch c khi lm vic ni ti khi iu khin ca ODEN-AT, ch chn l song song "PARALLEL".Tt c cc khi khng s dng khng ni ti khi iu khin.

5. c bit ch ngi s dng ODEN-AT phi c thm v tm hiu k ti liu k thut ca ODEN-AT trc khi s dng v cn lu v c tnh dng lm vic theo thi gian bo v ca ODEN-AT, du ny s trnh gy h hng cho my th.

Hng dn tt ny dng cho th nghim ptmt v My ct h th c dng nh mc n 2000A.Tuy nhin ODEN-AT cn mt s chc nng th nghim cc thit b in khc na , s dng cn c thm trong quyn hng dn s dng thit b ODEN-AT.

IV- Qui trnh s dng A - 70

I/ Cng dng.

A-70 dng th nghim cch in cc thit b in rn v lng nh: Cp lc,s cch in,chng st, du cch in...Bng dng in xoay chiu 50 Hz hoc in p tng cao mt chiu qua n chnh lu. Ngoi ra A-70 cn dng th nghim trong phng th nghim.

II/ Ch dn an ton.

Khi lm vic vi A-70 phi thc hin y cc qui phm k thut an ton in nh my in v trm in.

III/ Cng tc chun b trc khi th nghim.

III.1-B tr ni t my gn i tng th nghim, tuy nhin cn ch m bo khong cch an ton theo qui trnh KTAT in.Kim tra my th cn nguyn vn, sn sng trc khi ng in.

III.2-Ni t ti v my,so phng in i tng th,m np pha trn my.

III.3-T hp s th nghim theo yu cu cng vic th nghim.

IV/ Tin hnh th nghim.

VI.1-Ni i tng th vi my th v tch tip t ra khi i tng th v cc cao p ca A-70,cm ngun cp cho A - 70,y np pha trn my.

IV.2-Thng bo cho mi ngi tham gia cng tc bit" Bt u ng in". Khng ai c li gn ro chn khu vc th nghim. Kim tra tay quay iu chnh in p ca A-70 quay ngc chiu kim ng h v v tr "0".

IV.3-ng ptmt cp ngun n tn hiu phi sng.Dng tay quay A-70 quay theo chiu kim ng h nng t t in p ti gi tr th nghim. Duy tr in p th vi thi gian thch hp theo yu cu i tng th nghim.

IV.4-Ht thi gian th nghim dng tay quay gim in p v "0"bng cch quay tay quay theo chiu ngc chiu kim ng h n tn cng gii hn cui. Ct ptmt ngun dng so phng in t ln i tng th phng ht in tch v tip a u cao p A-70.

IV.5- Cng vic th nghim c xem l tt nu trong qu trnh th nghim khng c hin tng phng in, khng c st p hoc hin tung tng dng t ngt, ghi kt qu th nghim, gi tr in p , dng ( nu c ), thi gian th v tnh trng thit b.

IV.6-Tho d s th nghim tr li hin trng nh lc trc khi tin hnh th nghim (Thc hin hon tt th tc phiu cng tc theo ng QTATKT)

V- Hng dn s dng bo dng AII - 70

1. Chc nng nhim v:

1.1. My kiu AII ( - 70 ( trong ny gi l my ) c chc nng th nghim cp lc v in mi rn bng In p chnh lu, v cng th nghim in mi rn bng in p xoay chiu hnh sin tn s 50 Hz , 60 Hz.

1.2. My c thit k lm vic di mi tre hoc lm vic mi trng khng kh t -10 n + 400 C, m tng i 80% nhit +200C v p xut kh quyn 84 n 106,7 KPa ( 630 n 800 mmHg )..

2. Thng s k thut:

2.1. in p ngun mt pha xoay chiu 220 ( 11 V.

2.2. Thng s ca my in p chnh lu trong ch lu di khi gi tr in p nh mc ca mng:

1- in p lm vic ln nht ( KV ) : 70

2- Dng in lm vic ln nht, gi tr trung bnh: (mA) : 12

2.3. Thng s ca my in p xoay chiu trong ch lu di khi gi tr nh mc ca in p mng.

1- in p lm vic ln nht gi tr hiu dng ( KV ) : 50

2- Dng lm vic ln nht, gi tr hiu dng ( mA ): 20

2.4. Thng s ca my in p xoay chiu trong ch lm vic ngn hn lp li vi thi gian ng ( IIB ) 17% vi di chu trnh l 6 pht gi tr nh mc ca in p li.

1- Gi tr hiu dng in p xoay chiu lm vic ln nht ( KV ) : 50

2- Dng lm vic ln nht, gi tr hiu dng ( mA ): 45

2.5. Cng sut yu cu khng ln hn 3 KVA.

2.6. Trng lng ( kg ) khng ln hn:

1- Bng iu khin : 14

2- Ngun in p th nghim : 35

2.7. Kch thc cho H.1 v H.2

2.8. S liu ph kin a ra phn ph lc.

3. Hp b km theo.

3.1. Hp b tng ng cho trong bng.

1- Khi iu khin 1.

4- Dy ni t.

2- Ngun p th nghim 1.5. Cha kho.

3- Cp ngun 1.

6. L lch my.

4. Kt cu v nguyn tc lm vic:

4.1. Kt cu.

4.1.1. Kt cu ca my c thc hin dng di ng ri gia ngun in p th nghim v khi iu khin.

4.1.2. Ngun in p th nghim ( H.1) bao gm my bin p cao p, cng tc cao p, in tr cao p v n chnh lu t trong thng y du bin p.

Mc du MBA nm cch tm cch in mt my ( 15 ( 1 ) mm. Thng khi ngun cp c bt kn bng lp y vi gioang m cao su bt cht bi bu lng.

in p th nghim t cun cao p c ly ra qua cch in cao p c bit, t ni ti i tng th nghim.

Pha trn v thng ngun in p th nghim t dao ngn mch in t, t in v khe h phng in.

4.1.3. Khi iu khin ( H.2 ) bao gm b phn iu chnh in p th nghim, tm mch in, gic cm ni khi iu khin vi khi ngun in p th nghim, cu ch v cc phn t khc ca s .

H.1 Ngun in p th nghim.

H.2 Khi iu khin1- Kho ng ngun tng ng vi dng in p th nghim.

2- Micro-ampe

3- Kilovon- mt

4- Mili-ampe mt

5- n tn hiu xanh ( ng ngun )

6- n tn hiu ( ng in p th nghim )

7- Nt n ng in p th nghim

8- Nt ct in p th nghim

9- Nm iu chnh in p th nghim

10- Kho chuyn mch Kilovon.

11- Nt o dng Micro-ampe.

Trn mt khi iu khin nhng dng c o, n tn hiu, nm iu chnh in p, nt mch sun Micro-ampe, nt ng ( () v nt ct ( .O ) in p th nghim. Kho chuyn mch khc chia Kilovon khi lm vic in p chnh lu.

pha bn phi khi iu khin b tr kho chn dng in p th nghim v ng my vo mng.

Pha trc v sau khi iu khin c th m ra sa cha v iu chnh.

4.2. Nguyn l lm vic:

4.2.1. S nguyn l in a ra hnh 3.

4.2.2. Chc nng v tc dng ca cc phn t ca my c thc hin nh sau:

in p li c a ti khi iu khin nh cp ngun cp ti gic cm, a n cu ch FU1, FU2 ti cun khi ng KM1 v chuyn mch SA1. Khi t kho SA1 v tr " ~ " hoc " - " khi ng ngt mch in t QK1 m, khi n tn hiu xanh HL2 sng. Cun SA2 ch tc ng khi t chuyn mch SA1 v v tr xoay chiu " ~ ". Trong trng hp ny diot VD1 v VD2 b ni tt v u ra in p th nghim nhn c in p xoay chiu.

ng in p th nghim c tin hnh bng cch nhn nt SB1 sau khi t nm iu chnh in p TV1 v tr " O " ( tip im SQ1 ng ) khi ng KM2 v a ngun ti cun dy nht th MBA TV2 v TV3 khi n tn hiu HL1 sng.

in p th nghim c iu chnh nh nm iu chnh in p TV1 v c kim tra bng ng h Kilovon PV1.

My bin p TV2 cng vi in tr R3, R4 v diot VD11 c chc nng b dng r ngun p th nghim. Dng ph ti khi lm vic in p chnh lu n 1000 (KA c o bng Micro-ampe PA1, cn cao hn 1000 (KA c o bng mili-ampe PA2.

in tr cao p R1 v R2 dng o in p th nghim

C cu o PV1Kilovon khi lm vic ngun in p th nghim xoay chiu c khc nh in tr R7, Khi lm vic bng in p chnh lu khng ti bng in tr R5 cn khi th nghim cp lc hoc ph ti in dung l in tr R6 . Khi lm vic in p chnh lu trnh u ra pha ngun p th nghim vt qua gi tr bnh thng bng 70 KV, cng nh o ng in p th nghim cn theo di cht v tr kho SA3.

Trong trng hp ti in dung in p chnh lu, kho SA3 cn t v tr "KAbE(b ".

R le KV1 dng thay i in tr, mch sun ca dng c o PV1, in tr cun sun r le KA1, cng nh mch sun ca dng c o PA1 v PA2 khi lm vic ngun p xoay chiu.

bo v my khi dng qu ti dng r le KA1

Khi lm vic ngun in p chnh lu r le KA1 tc ng khi dng ti nm gii hn t 46 n 47 mA.

Sau khi kt thc th nghim cp lc, cng nh ti in dung, khi tch in p th nghim n nt SB2, khi ng tch KM2, ct cao p SA2 v in tch trn in

dung cp v cc i tng th nghim khc c phng qua cun th cp ca MBA TV3 n t. Khi in tch cn d c th c kim tra bng Kilovon PV1.

Khi tch my khi mng bng kho SA1 ng QK1 chm u ra cao p XT2 ca ngun in p th nghim v nh vy cng ni t i tng th nghim.

5. Ch dn an ton:

5.1. Trc khi tin hnh lm vic trn my cn ni t chc chn ngun in p th nghim bng dy dn bng ng tit din li khng nh hn 4mm2. Ni t khi iu khin c thc hin nh cc cc ni ca cp.

Lm vic thiu ni t rt nguy him!

5.2. Cm lm vic trn my vi dao ngn mch hng v n tn hiu khng sng.

5.3. Trc khi mc my ti mng ngun in p th nghim cn t khi iu khin cch ngun cao p khng nh hn 3m.

5.4. Cm ng my vo mng cng nh ngun in p th nghim khong cch nh hn 3m t ngun in p th nghim ti khi iu khin.

5.5. Trc khi ng ngun in p chnh lu cn tin tng rng ng h Kilovon t ng tng ng dng ti ( X.XO( hoc KAbE(b ).

5.6. Sau khi kt thc cng vic th nghim cn iu chnh bng tay in p th nghim quay n ngc chiu chuyn ng ca kim ng h t vo v tr cui n nt " .O " ct in p th nghim v ch sau mi tch my khi mng, ct kho v v tr 0. Kim tra sau khi phng in tch trn in dung v i tng cn quan st s ch KV ca my, kim ca KV cn v v tr " 0 " cui vch khc ng h.

5.7. Trc khi tch i tng th nghim khi ngun bng mt thng quan st dao ngn mch phi chm u ra cao p.

5.8. Tt c cc iu trn, lm vic, vn hnh v bo dng k thut ca my cn phi c hun luyn, nhng phng php lm vic an ton trn my ny v nhng hiu bit tng ng " Qui tc k thut vn hnh nh my in " v " Qui tc k thut an ton khi vn hnh tram yu cu ".

5.9. Ch lm vic ca my cn phi m bo an ton chng chy. Theo (OCT 12.1004.76.

5.10. Khi my khng lm vic c bit cha kho phi c gi nhn vin vn hnh.

6. Chun b my a vo lm vic:

6.1. Khi m my xem xt k cng v lau chi sch s cc chi tit c bi m bo qun bng sng v sau lau sch bng r lau kh.

6.2. Vn 4 long en (H1) bt tay nm vi v ngun in p th nghim, xit cht vng m chn u ra cao p vi v.

6.3. Khi cn thit lau chi nh bng vi mn v xng u ra cao p v ngun in p th nghim. Bt chc chn dy ni t vi u ni t ca my v h thng ni t.

6.4. Kch thc chnh khe h gia cc cc phng in, khe h cn phi gii hn t 0,3 n 0,5 mm.

6.5. Lc nn tip xc dao tip t vi u ra cao p khng c nh hn 50(. o lc cn s dng ng h p lc ko.

6.6. Kim tra k cng bi m cun in t ng ct ngn mch phi lm vic tt. ( H4 ).

7. Trnh t lm vic:

7.1. B tr lp t my.

7.1.1. t ngun in p th nghim ( trong ny gi l ngun ) gn i tng c th nghim. Ni i tng th nghim vo u ra cao p ca ngun.

7.1.2. Ni t ngun dng c bng dy dn bng ng tit dn 4mm2.

7.1.3. Ni cp ngun ti bng iu khin tng ng vi cc gic cm.

7.1.4. khi iu khin ca my cch ngun khong cch khng nh hn 3m.

7.1.5. Mc khi iu khin ti mng ngun v ni t n nh cp ca my.

Lm vic khng ni t rt nguy him.!

7.2.Tin hnh th nghim.

7.2.1. Nhng ngi c mt khi th nghim cn ng cch ngun th nghim v i tng th nghim khong cch khng nh hn 3m.

7.2.2. Lp cha kho vo khi iu khin v ng vo v tr cn thit tng ng vi dng in p th nghim, khi n tn hiu xanh phi sng.

7.2.3. Khi lm vic in p chnh lu ( - ) trnh nhm u ra t pha ngun cng nh o ng i lng in p th nghim cn theo di trn KV.

7.2.4. Quay nm iu chnh in p th nghim ngc chiu chuyn ng ca kim ng h t n v v tr gii hn cui.

7.2.5.ng in p th nghim n nt " ( " khi n phi sng.

7.2.6. Quay nm iu chnh in p th nghim theo hng chuyn ng ca kim ng h v quan st s ch Kilovon t i lng cn thit ca in p th nghim. Khi th nghim i tng in dung cn nh rng sau khi ngng quay nm iu chnh in p, in p th nghim trn i rng tip tc tng ( Kim ca Kilovonmet tip tc lch ) theo mc tch in ca in dung.

Trong trng hp ny nng in p cn thc hin chm v t t, khng cho php vt gi tr nh mc ca in p th nghim trn i tng. Cng nh vy khng cho php vt gi tr in p lm vic ln nht ca my bng 70 KV.

7.2.7. Khi lm vic vi in p chnh lu ( - ) o dng ph ti c ln n 1mA cn tin hnh bng micro-ampe khi cn n nt tng ng ca dng c ny.

7.2.8.Sau khi kt thc cng vic th nghim quay nm iu chnh ngc chiu chuyn ng ca kim ng h t n v v tr " O ".

7.2.9. n nt ( .O ) tch in p th nghim v ch sau tch my khi li bng kho chuyn dng t n v v tr ( O ).

Kim tra phng ht in tch trn t v i tng th nghim bng cch quan st s ch trn Kilovon my, Kim ca Kilovon cn phi v " O ".

7.2.10.Trong trng hp th nghim in p chnh lu bng 70 KV, in dung ca i tng ln hn 40 MK(, sau khi kt thc th nghim v t nm iu chnh in p v v tr O tn cng, in tch cn trn t cng vi i tng th nghim cn tho bng so phng in c bit c in tr hn ch sau n nt ( .O ) tch in p th nghim v sau ct my khi li bng kho chuyn dng.

S dng so phng in chuyn dng tho in tch u ra t pha cun th cp ca MBA cao p khi th nghim i tng in dung bng in p chnh lu thp hn 70KV i lng cho php ln nht cu in dung ca i tng th nghim, khng s dng so phng chuyn dng cn tnh theo cng thc.

C = 19600/U2C: in dung cho php ln nht ca i tng th nghim khng s dng so phng ( (F ).

U: in p th nghim ( KV ).

Trc khi tch i tng th nghim khi ngun cn quan st tip t ng chc chn u ra cao p hay cha.

8. Bo dng k thut:

8.1. Mt ln trong mt nm tin hnh cc cng vic xem 6.2 ( 6.6 cng thi gian kim tra du MBA. Xc nh in p chc thng theo (OCT 6581 - 75. Nu in p nh thng thp hn 35 KV phi thay du, du mi c in p nh thng khng di 55 KV. Sau khi dt du mi khng c y cht np y kh thot ra ngoi. Ch ng in sau khi thay du 24 gi.

8.2. Mt ln trong thng dng bn chi chi sch b mt tip xc ca tip im iu chnh in p.

8.3. Kim tra thng xuyn tip xc ca dao ni t cc cao p ca ngun in p cao.

8.4. Kim tra thang o kilovon ca my

8.4.1. Mt ln trong nm kim tra thang o Kilovon ca my.

8.4.2. kim tra cn vnmet in p xoay chiu gii hn 250 V, cp chnh xc 0,5, Kilovon kiu C100, t in vi in dung khng nh hn 70 KV.

8.4.3. Trc khi tin hnh kim tra cn m np pha sau khi iu khin ni lng vt hng kp 3 v 4 ( nh du 19 v 20 Hnh 3 ) t cc u vt ny ni ti vn met ngoi.

8.4.4. Khi kim tra cn xem xt tt c cc yu cu mc 7 trong l lch.

8.4.5. Kim tra thang o Kilovon in p xoay chiu.

8.4.5.1.Dng Kilovon C100 mt u ni ti u ra ngun p v mt u ni t lm ng h mu.

8.4.5.2. ng ngun in p th nghim xoay chiu v bng tay iu chnh in p t ln Kilovon C100 bng 50 KV. Nu kim ca Kilovon ca my khng t gi tr vch 50 ca thang o xoay chiu, th iu chnh in tr R7 a kim ch vch 50, ghi kt qu trn Vn met.

8.4.5.3. Khi cn kim tra sai s Kilovon ca my cc khc cn li ca thang o vi kilovon C100. Sai s ca cc khc ny khng vt qu 4,5%.

8.4.5.4. Sau khi kt thc cng vic tch my khi li.

8.4.6. Kim tra khc trn thang o in p chnh lu khi t kho "KV" v v tr " KAbE(b ".

8.4.6.1. T u ra cao p ca ngun ni ti Kilovon C100 v t ( mc 8.4.2. ) u kia ca t v Kilovon ni t.

8.4.6.2. ng in p chnh lu iu chnh t in p ln kilovon C100 ch 70 KV. Nu kim kilovon ca my khng t gi tr 70 KV ca thang o " - " th iu chnh in tr R6 v tr s 70 KV.

8.6.4.3. Tin hnh kim tra phn cn li ca thang o Kilovon ca my vi ng h mu C100. Sai s phn cn li ca thang o khng c vt qu 4,5%.

8.4.6.4. Sau khi kt thc vic kim tra tch my khi li ng tip t my v t, phng ht in tch trn t.

8.4.7. Kim tra thang o in p chnh lu khi t kho Kilovon v v tr " " X.XO( ".

8.4.7.1. ng in p th nghim chnh lu, iu chnh in p t trn vn met nh gi tr ghi c 8.4.5.2. Nu khi kim Kilovon ca my khng nm vch 70 KV ca thang o "-" th iu chnh R5 a kim Kilovon ca my v 70 KV.

8.4.7.2. Khi cn thao tc tip tin hnh kim tra sai s Kilovon ca my nh phng in cu o lng theo phng php (OCT 17512-82. khi sai s khng vt qu 10 %.

8.5. Kim tra b dng r ngun in p th nghim.

8.5.1. t kho Kilovon v tr " X.XO( " ng ngun in p th nghim chnh lu, iu chnh in p t trn Kilovon ca my in p 70 KV, n nt mch sun ca Micro-ampe..

Nu kim ca Micro-ampe khng nm v tr ch " 0 " th nh in tr R3 iu chnh n v v tr ny.

Kim tra cn tin hnh mi khi vn hnh my.

8.6. Kim tra bo v khi dng qu ti.

8.6.1. Ni t u ra cao p ngun p th nghim.

8.6.2. ng in p th nghim chnh lu

8.6.3. Quay nm iu chnh in p v quan st s ch Mili-ampe ca my tng dng n 14mA. Bo v cn tc ng khi my nm trong gii hn t 13 n 14 mA, trong trng hp ngc li c iu chnh nh in tr R8 n khi ct my khi li.

8.6.4. M np sau khi iu khin, ni vt 3 v 4 ( nh du 19 v 20 H.3 ) ni ti chng vn mt c gii hn o ti 75 V cp chnh xc thp hn 0,5.

8.6.5. ng in p th nghim xoay chiu.

8.6.6. Quay nm iu chnh v quan st trn vn met n 33 vn.

Bo v phi tc ng in p nm trong khong t 32 n 33 V trong trng hp ngc li c iu chnh nh in tr R9 , cn kim tra mi khi vn hnh.

8.7. My c bo v khi b m v chng va p thch hp vi iu kin di ng.

8.8. Thi hn s dng khng nh hn 10 nm.

8.9. S ni in khi iu khin c cho trn H.5

B tr khi chnh

Phn t ngunCh th khng

Hp in dung C4

Hp in tr R3B tr cc phn t trong mch in

S nguyn l in ca hp in tr R3 (Y3)

R3.1 - R3.4 - in tr SA1 - Kho chuyn mch 6.264.460

R3.5, R3.6 - in tr SA2, SA3 - Kho chuyn mch 6.264.3432

R3.7 - R3.15 - in tr

R3.16 - in th

S in nguyn l ca hp in dung C4 (Y4)

S in nguyn l S ni cc thnh phn ca cu, tng o v ca khi chnh MBA th nghim khi lm vic in p cao

S thun vi P5023 v (5122 S thun vi P5023

S nghch vi P5023

S in p thp

Hnh 7

S nguyn l ca thit b bo v in th

S b tr trn mch in ca thit bo v in th

S kim tra khi chnh bng phng php t hp ring bit

R1, R2 - Hp in tr P4830/1

C1 - Hp in dung P5026, C2 - T xoay chiu P334/3

C((- Hp in dung P5025, TV1 - MBA iu chnh,

TV2 MBA th nghim

VI- qui trnh s dng thit b th cao p ALT-120I. Cng dng:

Thit b th cao p ALT-120 cung cp in p xoay chiu tn s 50 Hz t 060 kV v 0120 kV. u ra c iu chnh mt cch lin tc cho vic th in p cao cho cc thit b in. Cng sut 7,2 kVA cho ti dung v 2 kVA cho ti tr. Thit b cn c ng h ch th dng in r qua cch in vi CCX 2%.

II.c im v cc thng s k thut:

- in p ngun 220V- 50 HZ

- Thit b c 2 khi tch ri, c ghp ni khi vn hnh bng cp hp b.

- Khi cao p cung cp 2 u ra cao p 60 v 120 kV.

- Khi iu khin c panel iu khin gn cc ng h ch th v cc h thng bo v.

- Mc qu ti c nh , nh ch to t 120% dng ra nh mc .my bin p iu chnh.

- ng h Ampemet c 4 gii o :

- Gii o thp t 0 - 250 (A AC .

- Gii o cao t 0 - 1 mA AC vi cc bi s (1, (10 , (100 .

- Kho chn GUARD / GROUND chuyn s o, gip cho vic o dng in r chnh xc.

- Thit b c kh nng b cng sut vi ti dung, nu in dung n 400pF u ra 120 kVAC th khng cn b. Nu in dung tng n 1,3 nF ti 120 kV th phi b.

- Thit b lm vic lin tc vi ti dung 4 kVA; vi ti 7,2 kVA th lm vic 1 gi phi ngh 2 gi.

III. Chun b a thit b vo lm vic.

Vic ci t trn thit b c rt gn bng cc hng dn cn thn v n gin cho ngi s dng khi thit k . Thit b ALT-120 c cc gic cm kt ni hp b khng th nhm ln khi ghp ni.

1- t khi cao p trong phm vi th nghim, bo m khong cch an ton khi lm vic vi in p cao .

2- Ghp khi iu khin vi khi cao p bng cp.

- Ni t khi iu khin t cc GROUND.

- m bo khong cch an ton ti thiu i vi tng cp in p cn th.

3- Cc aptomat ngun phi ct, rt gic cm lin ng khi v tr lin ng. m bo chc chn rng nm iu chnh in p u ra v tr 0 ( Vn ht c theo ngc chiu kim ng h ). Ni s ti i tng thit b th nghim

4- Xc nh in p th dt v tr cng tc in p u ra, t thang o cho ng h...

5. Ci t ng h m thi gian.

6. Chn s o thch hp

7. Nm PRIMARY CAPACITIVE load comp phi t v tr nh nht, tu thuc vo ti s tin hnh b trong qu trnh tng in p.

8. Nm CURENT METTER phi xoay v v tr TUNE gim st phn trm dng in ti trong khi tng in p.

V -Thao tc vi thit b - m bo chc chn cc bc a ra ti phn chun b thit b c thc hin . c bit ch vic ni t thit b.

- Trc khi ni dy n n i tng th, phi chc chn i tng th khng mang in.

Ch : u ra cao p 60 kV / 120 mA thng dng cho vic th cao p trong cc bnh nc . Thng thng vic th nghim trong mi trng khng kh dng u ra 120 Kv .

Bc1: Cmngun cp v bt cng tc MAIN POWER.

Bc2: Xoay t ngu OUTPUT v v tr " 0 " (Xoay ht c ngc chiu kim ng h).

Bc3: Cm gic lin ng EXT LINK vo v tr (Nu khng s khng pht c cao p).

Bc 4: Nhn nt HighVoltage-ON n ch th trn nt s sng (Ch in p cao nguy him cht ngi).

Bc 5: Xoay t ngu OUTPUT theo chiu kim ng h tng in p n gi tr cn thit.

Bc 6: Theo di phn trm dng ti trn Ampemet n 90% cn chuyn nm b PRIMARY CAPACITIVE Load Comp v 4,8 kVA, lc ny dng in phn trm s gim. Tip tc ln in p khi b ht thang 4,8 kVA chuyn b tip v thang 7,2 kVA v tip tc b (Vic b phi tin hnh theo tng nc t nh ti ln).

Bc 7: Khi in p dc tng n gi tr yu cu tin hnh o dng in r bng cch chuyn nm Current Metter v cc v tr (x100, x10,x1,250(A) ph hp vi dng r cn o v oc gi tr dng r trn Ampemeter.

Bc 8: Khi ng ng h thi gian theo di thi gian th bng cch nhn nt STARTTIMER. Khi ht thi gian th t trc s c tn hiu ci bo, gii tr bng cch nhn nt STARTTIMER mt ln na. Bc 9: o xong gim t ngu OUTPUT v "0" ri nhn nt HighVoltage-OFF, n ch th xanh trn nt s sng (ht cao p), ct Aptmt ngun MAIN POWER v tin hnh tho d s .

Trong Qu trnh th nu xy ra hin tng qu ti hoc i tng th b nh thng cch in, phng in th Rle bo v s tc ng ct cao p. Rle ny nm trong mch nht th v lm vic theo dng nht th. H s bo v t 120% In ca my bin p iu chnh.

VII- Hng dn s dng my o in tr (4104-M1

Trnh t thao tc trn thit b (4104-M1 khi o in tr.

1/ t kho chuyn mch thang o m( - ( vo v tr thch hp cho gii o tng ng.

2/ Mc s o theo hnh H-1 hoc H-2.

H -1 .S o in tr loi tr nh hng dy ni.

RX ( in tr cn o )

H - 2. S o in tr khng c loi tr in tr dy ni

RX ( in tr cn o )

3/ t kho chuyn mch OTK;;(Kho chuyn )V v tr .

4/ n nm . v dng nm vn . chnh kim ng h v v tr 0.

5/ n nm v dng nm vn chnh kim v cui v tr cui ca ng h o. Vic nh chun thit b o c th ni tt cc cc T1-T2 hoc nmc vi mt in tr.

6/ Vn kho chuyn mch v mt trong cc v tr (0,1; 1; 10 ) tng ng vi gii o la chn v nu cn thit chnh 0.

7/n nm v c s liu trn ng h o. Nu nh kho chuyn mch I t v tr m( - ( khong thi gian gia mi ln o khng c nh hn 10 sec.

8/ sau khi o xong kho II vn v v tr OTK.

c tnh k thut

y l thit b o in tr mt chiu c 12 phm vi o:

0 - 100(( / (0-1; 0-10; 0-100) m( / (0-1; 0-10; 0-100) (/(0-1; 0-10;0-100) k(/

(0-1;0-10) M(.

Sai s khng c vt qu nh sau:

( 4% phm o 0 - 100(( .

( 2,5% phm vi o(0-1; 0-10; 0-100) m( ;0-1(( 1,5% phm vi o khc.

in p ngun 220v 50 Hz. Vi ngun mt chiu in p (12+3-1,5) V.

VIII- Hng dn s dng thit b o in dung NCM 10A

Thit b NCM 10A c thit k cho vic o in dung cc ngn t, trong bung cha t m khng cn tho bt k dy ni no gia cc ngn t ring bit. My o NCM 10 A c 3 gii o in dung v 4 s ch th kt qu o. phn gii t ti 0,1% trong gii 1 - 1000(F.

1/ Cc thng s k thut.

NCM 10A c 2 kp c su chuyn dng cung cp ngun o ti cc ngn t c o, dng qua mi ngn t c o thng qua mt Ampe km. in dung t o c th hin bng s vi n v o l (F. Php o c thc hin t ng.

Gii o chnh;

1000 (F Ch th t 0.....999,9(F

100 (F Ch th t 0.....99,99(F

10 (F Ch th t 0.....9,999(F

S cc khi t o song song : 1...15

in dung cc i 2000(F.

Tn s o: 50-60 Hz

in p o 75 ph thuc vo in dung ti.

( 10 V 500 (F.

Sai s ( 1,5% ton b thang o.

phn gii 0,1% gia 1 v 1000 (F.

2/ Thng tin v k thut.

Gii ca CX : 1...200(F.

Gii ca CT: ( 1...20)* CX.

CX o c chnh xc n 0,5%.

o CT thc hin mt php o ring bit.

Gii ca CT: 1...1,5 (F.

CT o c chnh xc n 0,2%.

Nhit 0...50(C

Ngun cp 220 V/ 50Hz.

3/ Cc bc tin hnh o

a/ Cng tc chun b.

m bo rng t c o c cch ly hon ton vi mi ngun in cp ti v tip a phng ht in p d.

m bo rng v ca CNM 10A c tip a.

m bo ngun cp cho my o 220 V / 50 Hz.

Cng tc khi ng qu trnh o trn CNM 10A bt v OFF.

b/ Tin hnh o theo cc bc sau.

1. u dy o dng theo s d hng dn nh ch to, ch cch u cc tnh trn Ampe km.S u nh hnh di y:

*/ CT: Tng cc ngn t ni song song.

*/ CX: Ngn t ring ni song song vi cc ngn t khc.

CT Kp

CX

Ampe km

Kp en

2. Chn gii o ph hp vi t in c o, bng cch thay i gii o trn thit b CNM 10A nh nm ch gii o t 10....1000 (F.

3. Bt cng tc khi ng qu trnh o v v tr m ON. Lc ny thit b bt u qu trnh t ng o v hin kt qu o trn mn hnh tinh th lng gn trn mt thit b. Ch cho kt qu trn mn hnh n nh ghi li s liu, chnh l in dung o trn t vi n v o l (F.

Vi t mt pha o nh trn cn vi t 3 pha tin hnh o tng cp cc sau qua tnh ton tnh ra in dung t. Ch gii thang o chn trn mt my cn chuyn t gii cao v gii thp trong qu trnh o nu nh t o cha bit c th gi tr.

4. Sau khi o xong bt cng tc khi ng my o v v tr OFF.Dng so tip a phng in p tch trn t sau mi chuyn sang o t khc.Tin hnh o t khc theo hng dn trn.

IX- Hng dn s dng my pht in KUBOTA

I. Chy my:

Trc khi cho my chy ta cn tin hnh cc bc sau:

1.Kim tra du my ( nhn mt ch th du panel ) que thm du.

2. Kim tra xng trong bnh qua ng thu v np xng.

3. M kho xng ch " 0 " ng ch " S ".

4. Dng ngn tay tr n cng tc sang pha " RUN ".

5. Gt cn le sang phi.

6. Ko nhanh dy khi ng my n.

7. Sau khi my n gt cn le v tri.

8. u dy tip a my panel.

9. Cm phch cm vo cn dng.

10. Khi cn dng my nhn cng tc v pha " STOP ".

11. ng kho xng ch " S ".

II. Bo qun my pht:

1. Khng my di tri ma.

2. Khng my chy ni kn.

3. Khng x nc ra.

4. Khng my chy di hm su.

5. Khi np xng khng c ht thuc.

6. Khng my ni gn la.

GROUND

( I = I1 + I2 )

GUARD

( I = I1 )

A

LOAD RETURN

CAO p

IT

I1

I2

1- Cc ni

ti i tng th nghim

2- Dao ngn mch

3- Vng m

4- c bt quay v

5- Cc ni t

6- V hp

1( 1( 2( 2(

(4104-M1

1( (1 2( (2

(4104-M1

CNM 10A

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