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RECLOSERS NOVA 15i, NOVA 27i, NOVA 38i 3 pha, iu khin vi x l Hng dn lp t v vn hnh

Ni dung Thng tin an ton ........................................2

nh ngha trng hp nguy him...........2 Hng dn an ton...................................2

Thng tin sn phm .....................................3 Gii thiu .................................................3 c cm nang trc.................................3 Thng tin b sung ....................................3 Tip Nhn v kim tra ban u................3 Xp d v lu kho ...................................3 Cc tiu chun .........................................3 M t vn hnh ........................................3

nh mc v thng s k thut...................4 Kim tra nh mc trc khi lp t........4

Kch thc ....................................................5 Giao din caNova i.....................................6

Giao ngun iu khin.............................6 Quy trnh lp t ........................................7

Di chuyn recloser ...................................7 Nng recloser ...........................................7 Tho recloser khi li in ....................7 Ni t recloser Nova i ............................8

Vn hnh ..................................................... 12

Vn hnh in ....................................... 12 Hin th v tr tip im OPEN/CLOSE.. 12

Thao tc bng so (m tay, ng in).... 12 Ty chn cm bin p ni........................... 13 Lp t ..................................................... 13 Ci t t From 6 .................................... 15 Ph kin ....................................................... 16

Cng tc ph ........................................... 16 u cc ................................................... 16 Gi treo ct.............................................. 16 Gi lp chng st..................................... 17 Gi lp trm............................................. 18

Thng tin vn hnh ..................................... 19 Yu cu vn hnh.................................... 19 Kim tra nh k ..................................... 19 Kim tra vn hnh ................................... 19 Th cao p............................................... 20 Kim tra mun Nova i........................... 21

X l s c.................................................... 21 Recloser khng ng............................... 21 Recloser khng ct bng in ................. 21

Thng tin phc v

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AN TON CHO CUC SNG Sn phm ca Cooper Power Systems p ng hoc vt qu tt c chun p dng cho ngnh cng nghip lin quan n an ton sn phm. Chng ti ch ng nng cao an ton trong s dng v bo tr thng qua ti liu, chng trnh hun luyn vi s c gng ca ton th nhn vin Cooper Power Systems t khu thit k, sn xut, qung b sn phm v dch v.

Chng ti khuyn co mnh m ngi s dng lun phi tun theo quy trnh an ton ti a phng v hng dn an ton khi lm vic gn thit b v ng dy cao th v ng h s mnh - An ton cho cuc sng ca chng ti.

THNG TIN AN TON Cc hng dn trong cm nang ny khng nhm mc nh thay th cho kha hun luyn v kinh nghim trong vn hnh thit b an ton, Ch nhng k thut vin chuyn v thit b ny c lp t, vn hnh, bo dng. Nhng tiu chun k thut vin phi t: Thng sut ton b hng dn ny. c cng nhn qua kha hun luyn

thc hnh vn hnh an ton vi in p cao/h trong cng nghip.

c hun luyn v c cho php cp in, ngt in, ni t h thng in phn phi.

c hun luyn cn thn trong s dng thit b bo v nh l qun o bo h, knh bo h, mt n, m cng, gng tay, .

c v hiu chc chn tt c cnh bo v thn trng.

Hng dn an ton Di y l nhng trng hp cnh bo v thn trng ph bin c p dng cho thit b ny. Nhng trng hp khc, lin quan n quy trnh v nhim v c bit nm ri rc trong cm nang ny.

Cnh bo: Thit b truyn ti v phn phi in phi c la chn ph hp mc ch ng dng. Thit b phi c lp t v bo dng bi nhn vin c hun luyn v am hiu quy trnh an ton. Nhng hng dn ny c son tho cho nhng nhn vin nh vy v khng dng thay th cho kha hun luyn v kinh nghim trong quy trnh an ton. Khng la chn, lp t, bo tr thit b truyn ti v phn phi in ng c th dn n t vong v gy tn thng cho ngi v h hi thit b.

Cnh bo: Thit b ny khng nhm mc ch bo v con ngi. Thc hin tt c quy trnh an ton ti a phng khi lp t hay vn hnh thit b. Khng tun t c th dn n t vong, gy tn thng cho ngi v h hi thit b.

Nguy him: in p nguy him: Tip xc vi in p cao c th dn n t vong hoc tn thng nghim trng. Thc hin theo tt c quy trnh an ton ca a phng khi lm vic gn ng dy v thit b cao v h p.

Cnh bo: Trc khi lp t, vn hnh, bo tr, hay kim tra thit b, c v hiu r ni dung hng dn. Thao tc, iu khin, bo tr khng thch hp c th dn n t vong, gy tn thng cho ngi v nguy hi thit b.

Hng dn s dng ny c 4 loi nh ngha v nguy him:

Nguy him: Biu th tnh hung nguy him s xy ra nu khng phng trnh s dn n t vong hoc tn thng trm trng.

Cnh bo: Biu th tnh hung nguy him s xy ra nu khng phng trnh s dn n t vong hoc tn thng trm trng.

Thn trng: Biu th tnh hung nguy him. Nu khng phng trnh s dn n tn hi va v nh.

Thn trng: Biu th tnh hung nguy him, Nu khng phng trnh s dn n tn hi cho thit b.

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THNG TIN SN PHM

Gii thiu Cm nang S280-43-1 hng dn lp t, vn hnh, hng dn bo tr recloser Nova i 3 pha v t iu khin vi x l. Trc khi lp t v vn hnh recloser ny, c v hiu r ni dung hng dn. Ch dn vn hnh c v hiu r ni dung hng dn v tun th tt c quy trnh an ton ca a phng trc khi lp t v vn hnh thit b. Recloser ny c s dng kt hp vi iu khin recloser ca hng Cooper Power Systems. Tham kho cm nang S280-70-18 v lp t t iu khin treo ct From 6. Thng tin b sung Nhng hng dn ny khng bao gm tt c cc chi tit hay s thay i trong cc thit b, quy trnh, m t ch to v cng khng cung cp ch dn cho mi bt thng c th xy ra trong qu trnh vn hnh, lp t, bo tr. Cn thm thng tin, vui lng lin h i din Cooper Power Systems. Tip nhn v kim tra ban u Mi recloser c lp rp, kim tra v thm tra hon chnh ti nh my. Recloser trong iu kin tt khi c vn chuyn. Khi nhn recloser, kim tra du hiu h hi ca thng vn chuyn. Tho thng ng recloser v kim tra k hng hc xy ra trong qu trnh chuyn ch. Nu pht hin hng hc ngay lp tc yu cu n v chuyn ch bi thng.

Tho d v lu kho Thn trng trong tho d v lu kho gim thiu s hng hc. Tham kho phn nng v dch chuyn recloser. Nu recloser c lu kho trong thi gian di trc khi lp t, khu vc lu kho phi sch s, kh ro. Cc tiu chun Recloser Nova i c thit k v kim tra theo tiu chun: IEC 62271-111 2005 Chun IEEE C37.60-2003 Cc tiu chun cht lng H thng qun l cht lng ISO 9001:2000 M t vn hnh Recloser Nova i 3 pha, bung ct chn khng cho h thng in phn phi di 38 kV. Recloser Nova i c thit k v kim tra tng thch vi t iu khin From 6 ca hng Cooper Power Systems. H thng hp cht cch in rn khng s dng kh, cht lng, xp cch in. Recloser Nova i c kh nng chu ng vi oxi, ozn, hi m, bi bn, tia cc tm cao. Recloser NOVA I c 03 mun bung ct c trong cht rn, bin dng, v c cu chp hnh t. Recloser ph hp cho vn hnh nhit t -400C n +650C.

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NH MC V THNG S K THUT

Kim tra nh mc trc khi ci t Recloser phi c ng dng trong phm vi nh mc ca n. Kim tra nh mc nhn v so snh vi c im h thng ti ni p dng trc khilp t. Bng 1,2,3,4 lit k nh mc v thng s k thut recloser Nova i.

Bng 1:in p nh mc (kV)

M t 15 kV 27 kV 38 kV in p ln nht nh mc xung c bn (BIL) Gii hn nhiu v tuyn (V) Mc cch in kh tn s cng nghip Mc cch in t tn s cng nghip

15.5 kV 110,0 kV

100@ 9.4 kV 50 kV 45 kV

27 kV 150,0 kV

100@ 16,4 kV 60 kV 50 kV

38.8 kV 170,0 kV

100@ 23,0 kV 70 kV 60 kV

Bng 2: Dng in nh mc (kV)

M t 15 kV 27 kV 38 kV Dng lin tc nh mc Dng ngn mch, i xng Dng ng ngn mch nh, khng i xng Dng ng ngn mch, khng i xng RMS

630 A* 12.5 kA** 31.0 kA 20.0 kA

630 A* 12.5 kA** 31.0 kA 20.0 kA

630 A* 12.5 kA 31.0 kA 20.0 kA

* Ty chn 800A ** Ty chn 16.0 kA Bng 3: nh mc c kh

M t 15 kV 27 kV 38 kV S ln thao tc in/c nh nht Khi lng kg(lbs)

10,000 110(242)

10,000 115(253)

10,000 125(275)

Bng 4.1: S ln ct ngn mch cho NOVA15i v NOVA27i

Kiu % dng ct nh mc S ln thao tc X/R nh nht Nova15i Nova27i

15-20 45-55 90-100

44 56 16

Tng 232

4 8 17

Bng 4.2: S ln ct ngn mch cho NOVA38i

Kiu % dng ct nh mc S ln thao tc X/R nh nht Nova38i 15-20

45-55 90-100

88 112 32

Tng 232

4 8 17

* Theo tiu chun IEC 62271-111-2005 * Theo tiu chun IEEE C37.60-2003

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Hnh 2. Kch thc Recloser 3 pha Nova i.

Ty chn u cc A

Kiu con mt, 1/10-500 mcm Phm vi dy cp (dng ln nht 600A)

89

Kiu con mt, 4/0-1000 mcm Phm vi dy cp (dng ln nht 600A)

111

Kiu phng, 2 l (dng ln nht 600A)

119

Kiu phng, 4 l (dng ln nht 800A)

121

Khong cch r

M t Khong cch r (mm) ng r (mm/kV) u cc ti u cc 1180 79 NOVA 15i u cc thp ti t 671 45 u cc ti u cc 1473 55 NOVA 27i u cc thp ti t 951 35 u cc ti u cc 1763 46 NOVA 38i u cc thp ti t 1215 32

B C D E NOVA 15i 809 528 400.5 285 NOVA 27i 908 627 400.5 285 NOVA 38i 1007 676 441.1 298.6

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GIAO DIN NOVA i

Giao Din Ngun iu Khin Recloser Nova i (hnh 3 v 4) vi giao in ngun-iu khin hon ton hot ng c cng vi t vi iu khin From 6 c trang b b chuyn i DC-DC, mch giao din, cp iu khin 19-pin. Giao din ngun-iu khin bao gm u cm 19 pin trn recloser v b si bn trong (iu khin m) c cp ngun t ngun vo ca t iu khin.

Bo mch chuyn i dc-dc chuyn i 24Vdc t c quy thnh 53Vdc np t in trong Nova i. Ngoi ra bo mch chuyn i DC-DC cn c mch gim st in p bo v cho c uy khi hng hc v cp ngun thao tc ng/ct khi khng c ngun AC. Khi khng c ngun cp AC th c quy s cp ngun thao tc ng/ct. Mt trnh t 4 ln ct vi khong thi gian ng li cc tiu nh c cu hnh cho mi t iu khin m khng cn ngun AC. B recloser v t iu khin c th thao tc hn 1000 ln ch vi ngun c quy.

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QUY TRNH LP T

Khi lp t recloser, tham kho hng dn ng dng gi lp . Hng dn lp t c i km vi gi gi lp. 1: Kim tra nh mc trn nhn. m bo nh mc, cc thng s t v giao din ty chn trn nhn recloser (hnh 5 v 12) ph hp vi kt hoch lp t.

2. Th cao p: Trc khi lp t recloser Nova i. Kim tra bn in p cao. Tham kho phn thng tin phc v cho quy trnh kim tra bn in p cao.

3. Lp t recloser: Lp t recloser ph hp vi khung lp trm hay treo ct ca hng Cooper Power Systems. Xem hnh 6 hng dn di chuyn v nng d .

Ch : Tun th cc quy trnh an ton a phng khi nng v lp t thit b. S dng cc khoen nng trn my. Nng my nh nhng v khng x dch. Thc hin khng ng c th gy h hi thit b.

Ch : Lt nghing. Trng tm cao. S dng 4 mc trnh my b lt trong qu trnh nng. Thc hin nng khng ng c th gy tn thng cho ngi v h hi thit b.

Di chuyn recloser Khi vn chuyn, Recloser Nova i c ng thng v pa lt. Khi di chuyn bng xe xc/cu, recloser phi c c nh trn pa lt trnh gy h hi khi chm vo ch th OPEN/CLOSE. Nng Recloser Thc hin cc thao tc an ton khi nng thit b. Nng my phi nh nhng v khng x dch .

Ch : Tn thng con ngi. S xuyn c cnh sc. Mang gng tay bo h khi lm vic. Khng tun th c th dn n b ct v xy xt.

Cnh bo: in p nguy him. Lun s dng so cch in khi lm vic vi thit b ny. Khng tun th c th dn n tip xc vi in p cao, m s tip xc dn n t vong hoc gy tn thng nghim trng.

Cnh bo: Thit b ny khng nhm mc ch bo v con ngi. Do phi tun th tt c nguyn tc v iu kin thc t an ton ti a phng khi lp t v vn hnh my. Khng tun th c th dn n t vong hoc gy tn thng nghim trng cho ngi v h hi thit b.

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4. Ni t recloser. Thc hin ni t vo u ni t. Ni t pha sau v my. Xem hnh 3 v v tr ni t. u ni t ph hp vi dy cp xon t #10 n #2. Hnh 9, 10, v 11 nn c dng khi ni t recloser NOVAi 5. Lp t t iu khin. Tham kho cm nang v lp t t iu khin. m bo cp iu khin c ni gia t v recloser. T c lp trnh ph hp cho k hoch lp t v c ni t 6. Ni dy co p (hnh 7) Lu : dao cch ly v dao ni tt khng c yu cu nhng nn c s dng h tr ng/ct v cch ly.

A: u ni dy in p cao ti u cc s xuyn recloser. Tham kho hnh 8. xc nh u cc ca NOVA i. Nn s dng dy ng ni u cc.

B. Nn lp chng st bo v qu p 2 pha ca recloser.

QUAN TRNG: Mc nh s nm ngang l

pha ngun v s ng l pha ti. Cng c th dng s ngang l pha ti v s ng l pha ngun. Lu : o chiu s xuyn ngun v ti khng nh hng n bo v qu dng nhng c th phi thay i ci t v u dy t o lng ng. i vi thit b c cm bin p bn trong, s xuyn nm ngang (1,3,5) phi c ni vi ngun. Cm bin p khng th gim st in p ngun khi recloser NOVA i v tr OPEN nu s xuyn ngang c ni pha ti.

Ch : H hi thit b. Khng iu chnh hay xoay cc s xuyn. Cc s xuyn c nh my cn chnh ph hp vi dng lin tc ca my. iu chnh hay xoay cc s xuyn c th h hi bung ct lm h hi thit b hoc tn thng ngi.

Cnh bo: in p nguy him. Lun ni t tt c thit b. Khng tun th c th gy t vong, tn thng ngi v h hi thit b.

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Tho RECLOSER khi Li

1. Cm ct theo dng t. 2. ng tt c 3 dao ni tt. 3. Dng so cch in ko cn mu vng xung. Cn thao tc mu vng nm di np che trn recloser. 4. Tiu khin s nhn bit recloser ang ct v hin th OPEN/LOCKOUT trn bng t 5. M dao cch ly pha ngun v ti. 6. Tho cp cao p

7. Tho cp iu khin, cp ngun, ni t t recloser. Lu : Tho cp iu khin trong khi recloser mang in s khng gy hi CTs. 8: Tho d recloser phi theo quy trnh ca in lc

NI T Recloser NOVA i

H THNG 3-PHA KHNG NI T V TR KHNG T C th yu cu dng thm ni t ty theo quy nh an ton ca a phng nh ngha v mc in p bc & in p chm. Tham kho quy nh ni t ti a phng c quy trnh ni t ph hp.

QUAN TRNG: Tt c ng y t bn ngoi vo t iu khin khng c cch ng dy t tng ng qu 203 mm. Khi c st, in p xp x 1,5 kV trn mi foot dy dn. Chiu di khc nhau ca dy dn v dy ni t c th gia tng ng sut ln linh kin trong t iu khin khi c xung st.

QUAN TRNG: khi lp trn ct, phi ni t gia recloser, bin p, t iu khin, v thit b SCADA bo v thit b tt. Dy ni t recloser ti thiu l 50 mm2

Cnh bo: in p nguy him Nu recloser ang mang in trong khi tho cp iu khin. Cun dy th cp CT c th sinh ra in p cao. Tip xc vi in p cao c th dn n t vong hoc tn thng nghim trng.

Quan trng: bt k thit b cm bin p no lp t vi recloser NOVA i cng phi ni t chung vi recloser.

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NI T VI BIN P CP NGUN TI CT: 4-DY NI T LP LI, 3-DY KHNG NI T HOC NI T QUA TR KHNG. Lp t bin p cp ngun ti ct treo recloser phi bao gm (hnh 9): Bo v s xuyn recloser v bin p cp

ngun bng chng st. Ni t np v v recloser. Ni t v bin p. Ni t v t iu khin. Ni t thit b SCADA.

NI T VI BIN P CP NGUN LP XA: 4-DY NI T LP LI, 3-DY KHNG NI T, HOC NI T QUA TR KHNG. Lp t bin p cp ngun xa recloser phi bao gm ( hnh 10): Bo v s xuyn recloser v bin p cp

ngun bng chng st. Ni t np v v recloser. Ni t v bin p. Ni t v t iu khin. Ni t thit b SCADA.

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NI T TRN H THNG 3 DY NI T N Lp t trn li 3-dy ni t n phi bao gm (hnh 11): Bo v s xuyn recloser v bin p cp

ngun bng chng st. Ni t np v v recloser. Ni t v bin p. Ni t v t iu khin.

Ni t thit b SCADA

Ch : in p truyn dn. Khng ni trc tip n thit b iu khin t xa. Tt c thit b SCADA phi c lp t ti ch hoc ni cp quang hoc ph kin truyn sng. Kt ni trc tip ti thit b iu khin xa c th to ra in p truyn dn gy tn thng ngi hay h hi thit b.

QUAN TRNG: khi lp trn ct, phi ni t gia recloser, bin p, t iu khin, v thit b SCADA bo v thit b tt. Dy ni t recloser ti thiu l 50 mm2

QUAN TRNG: Tt c ng y t bn ngoi vo t iu khin khng c cch ng dy t tng ng qu 203 mm. Khi c st, in p xp x 1,5 kV trn mi foot dy dn. Chiu di khc nhau ca dy dn v dy ni t c th gia tng ng sut ln linh kin trong t iu khin khi c xung st.

Ch : in p nguy him. Khng s dng in li h p cp ngun iu khin recloser tr khi mng ny c thit k c bit chu ng cng in p t ln. Chm t trn li cao p c th to ra in p t cao.

Cnh bo: in p nguy him: Thc hin thao tc an ton a phng v cch in khi bo tr thit b. in p bc v chm cao l c im ca li in ny. Khng tun tH c th gy t vong hoc tn thng nghim trng.

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VN HNH

Vn hnh in: Recloser Nova i s dng mch giao din t trong v my. Mch giao din iu khin tn hiu ng ct ti khi ng t. Hin th tip im OPEN/CLOSE

Ch th v tr tip im CLOSE/OPEN bao gm ch th CLOSE mu v ch th OPEN mu xanh nm pha di np recloser (hnh 12).

Thao tc so cch in (ct bng tay, ng bng in)

Recloser c th c ct bng tay, s dng hotstick ko cn OPEN mu vng trc b mt recloser. (hnh 12). ng recloser sau khi ct bng tay, u tin y cn mu vng ln, sau s dng t iu khin ng recloser.

Quan trng: Nu cn mu vng vn gi nguyn v tr di. Recloser khng th ng bng in t t iu khin.

Cnh bo: in p nguy him . Lun s dng so cch in khi lm vic vi thit b ny. Khng tun th c th tip xc vi in p cao m c th gy t vong hoc gy tn thng nghim trng.

Cnh bo: in p nguy him. Khng bao gi tin tng vo v tr m ca cn thao tc hoc n hin th v tr. N khng m bo ng dy khng mang in. Phi tun th quy trnh a n t o n ti a. Nu khng c th tip xc vi cao p dn ti t vong hoc gy tn thng nghim trng.

Cnh bo: in p nguy him. Khng nn tin tng v tr m ca cn thao tc mu vng hoc n ch th tip im. N khng m bo ng dy khng mang in. Lun thit lp khong cch ly nhn thy. Khng tun th quy trnh an ton c th tip xc vi in p cao m n s dn n t vong hoc tn thng nghim trng

Cnh bo: Thit b ny khng nhm mc ch bo v con ngi. Do phi tun th tt c nguyn tc v iu kin thc t an ton ti a phng khi lp t v vn hnh my. Khng tun th c th dn n t vong hoc gy tn thng nghim trng cho ngi v h hi thit b.

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TY CHN CM BIN P NI

Cm bin p ni nm bn trong Nova i v c ni vi s xuyn ngang. Cm bin cung cp in p thp cho t iu khin Form 6 thc hin chc nng o lng v/hoc bo v La chn cm bin, dy cp, t iu khin c chnh xc khong 2% hoc nh hn hay chnh xc gc pha 1.50 trong vng nhit -400C n +500C Lp t:

Tham kho mc Lp t ca cm nang ny c thng tin v quy trnh lp t recloser NOVA

i. Tham kho thng tin vn hnh S280-70-18 c thm thng tin lp t t Form 6 trn ct. Xc nhn u ni ng cc pha ngun v cc pha ti. y l yu cu bt buc cm bin p bn trong hot ng ng. Kim tra ni t ca recloser Nova i v t iu khin trc khi thc hin u ni cao p v th cao p. Ni t ng bao gm ni in tt dy ni t n u ni t trn thn my. Ni t tt t iu khin. Lu : B mt sn ca v my c th cn tr vic ni t v reclsoer. Lun thc hin ni t tt n u ni t trn thn recloser. Ni t v my km c th dn n xut hin in p cao trn v t km theo u ni in tr cao p ca cm bin p.

Recloser c km u ci 4 pin (hnh 13) ni ti t iu khin bng cp bc 4-li. Ph kin ca t gm u c 4-pin v mch in tng ng trn t. xin xem hnh 14.

Quan trng: Cng tc ngt ngun AC l cn thit cch ly t iu khin kim tra v sa cha.

Cnh bo: in p nguy him. Lun ni t tt c thit b. Khng tun th c th gy t vong, lm tn thng nghim trong con ngi v h hi thit b.

Cnh bo: in p nguy him. Lun s dng so cch in khi lm vic vi thit b ny. Khng tun th c th dn n tip xc vi in p cao m dn n t vong hoc gy tn thng nghim trng.

Cnh bo: in p nguy him: Khng chm vo u ci ca dy cp cm bin in p. Nu recloser mang in v dy cm bin in p khng ni vi recloser hoc t iu khin. Mt in p 250Vac s xut hin ti u cp ci. Tip xc vi in p ny c th gy tn thng cho ngi.

Cnh bo: Thit b ny khng nhm mc ch bo v con ngi. Do phi tun th tt c nguyn tc an ton ti a phng khi lp t v vn hnh my. Khng tun th c th dn ti t vong, gy tn thng nghim trng cho ngi v lm h hi thit b.

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Tip xc in ca recloser, t iu khin v dy cp phi sch v kh ro. B mt bn phi c lau chi vi cn v b mt t phi c lm kh bng my sy. B mt kh rt quan trng u ni cm bin p ni. chnh xc ca cm bin c th b nh hng bi hi m v d bn.

u ni cp iu khin, cp ngun, v cp cm bin vo t. Xc nhn dy cp/ l cm in ng. Ni dy khng ng c th gy h hi cho recloser v/hoc t. Hon tt ci t t trc khi thc hin kt ni cao th. Tham kho phn hng dn Vn Hnh ca cm nang ny.

u ni in ng n u cc recloser. Xc nhn pha ph ti (s xuyn dc) v pha ngun (s xuyn ngang) ng. y l yu cu m bo cm bin p hot ng ng. Cp ngun cho recloser v kim tra in p u ra trong t iu khin. Khi recloser c cp in, in p u ra ca cm bin p l 6V, nh vo in khng u vo t Form 6. Nu cp cm bin t hoc recloser c tho ra, u ra cm bin p l 250 Vac. u cm trn recloser v cp cm bin (pha t) l cc ci 4 pin gim thiu v tnh tip xc vi u ra cm bin p. in khng u vo t n cm bin lm gim in p cn 6V trong qu trnh hot ng bnh thng. Ch : Tc ng nhm. Khng ni t

ti recloser ang mang in cho n khi tt c ci t c lp trnh ng v c xc nhn. Tham kho thng tin lp trnh cho t iu khin ny. Khng tun th c th dn n t v recloser tc ng nhm, thit b h hi v tn thng cho ngi.

Ch : Tc ng nhm. Xc minh tt c chn u ni v phn tip xc sch s v kh ro trc khi ni dy cp. Li cm bin p c th xy ra do d bn. Khng tun th c th dn n t v recloser tc ng nhm.

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Ci t t iu khin Form 6 T Form 6 phi c lp trnh vi t s PT v gc pha iu chnh. Tham kho bng 5 v 6. Nhng thng s ny c nhp vo mn hnh Cu Hnh H Thng (hnh 15) Khi lp trnh vi Form 6, PT phi c ni hnh sao (Y) v tnh nng gi lp pha phi c tt. Tham kho Thng Tin S280-70-4 bit thm thng tin v lp trnh Form 6

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PH KIN Cng tc ph Cng tc ph 3-tng c th c cung cp nh l mt ph kin. Mi tng c 2 tip im c lp cho php kt hp a (cng trng thi tip im recloser) v b (ngc trng thi tip im recloser). Tip im cng tc c mc cch in 600V v dng nh mc lin tc 10A. nh mc ct theo bng 7

u cc u cc chun l loi phng 2-l nh mc 630A. Mt eyebolt 1/0-500 mcm (630A), eyebolt 4/0-1000mm (800A), v u cc phng 4-l , l nhng ph kin ty chn (hnh 16) Eyebolt v u cc phng c nh c lm t hp cht ng. Hng Cooper Power Systems khuyn dng dy ng ni in u cc c tt. Lp chng xt dng bo v tm thi cho dy nhm khi ni vo u cc phng phi c duy tr trong khong thi gian xc nh da trn iu kin kh hu, ph ti v cc iu kin lp t khc. Gi Lp Treo Ct Gi lp treo ct (hnh 16) c lin kt vi recloser khung bng bu-lng.

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Gi Lp Chng St Gi lp chng st (Hnh 17) c th c bt c vo gi lp recloser lp chng st pha ngun v ti. Chng st khng c cung cp km vi gi lp.

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Khung Lp -Trm C khung lp-trm (hnh 18) trong trng hp lp trm

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THNG TIN VN HNH Yu cu vn hnh Recloser Nova i c thit k vi tui th c kh nh nht l 10,000 thao tc. Recloser Nova i cn c kim tra nh k h hi vt l v kh nng vn hnh.

Kim tra nh k Bi v recloser c th c vn hnh nhiu iu kin v kh hu khc nhau, thi gian vn hnh c xc nh tt nht trn kinh nghim vn hnh thc t. Kim tra vn hnh Recloser ny s dng vi t vi iu khin Form 6. Tham kho hng dn s dng t.

1: Kim tra nh mc trn nhn. m bo nh mc, thng s t, giao din trn nhn recloser (hnh 5) ph hp vi k hoch th nghim.

2: Kim tra thao tc ng/ct bng in. ng v m tip im recloser bng t vi iu khin. Xc nhn tip im ng/ct bng:

A: n hin th v tr ng ct, hoc B: Kim tra thng mch gia cc u cc recloser.

3: Kim tra ct bng tay: Ko cn mu vng (hnh 12) xung m tip im recloser. Xc nhn tip im m bi:

A: n hin th v tr ng ct, hoc B: Kim tra thng mch gia cc u cc recloser.

4: ng tip im recloser A: u tin, ycn mu vng ln. B: ng recloser bng t vi iu khin.

Cnh bo: Thit b ny khng nhm mc ch bo v con ngi. Do phi tun th tt c nguyn tc an ton ti a phng khi lp t v vn hnh my. Khng tun th c th dn ti t vong, tn thng nghim trng cho ngi v lm h hi thit b.

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Th Cao p

S dng quy trnh sau y th cao p ti 75% nh mc in p chu ng tn s thp trong 60s. Xem in p th bng 8 v hnh19 v s u ni.

*Khi c cm bin p, dng r tng thm khong 0.53mA Khi c cm bin p, dng r tng thm khong 0.32mA ** Khi c cm bin p, dng r tng khong 0.37mA Th nghim 1: 1: ng tip im recloser. 2: Ni t recloser. 3: Ni u cc 2, 4, 6 vi nhau (xem hnh 8) 4: t in p th ph hp ln cc 2, 4, 6 (bng 8) 5: Recloser phi chu c in p th 60s. Th nghim 2: 1. ng tip im recloser. 2: Ni t recloser. 3: Ni t pha A (cc 2) v pha C (cc 6) 4: t in p th ph hp ln pha B (cc 3) 5: Recloser phi chu c in p th 60s.

Th Nghim 3 1: M tip im recloser. 2: Ni t recloser. 3: Ni t cc 1, 3, 5 (hnh 8). 4: Ni chung pha 2, 4, 6 5: t in p th ph hp ln cc 2, 4, 6. 6: Recloser phi chu c in p th 60s. 7. o ngc u ni: ni t cc 2, 4, 6. 8: t in p th ph hp ln cc 1, 3, 5 trong 60s. 9. Recloser phi chu c in p th 60s.

Cnh bo: Bc x: Ti in p th nghim quy nh, bc x pht ra bi bung ct chn khng l khng ng k. Tuy nhin in p cao hn, bc xa pht ra c th gy hi cho ngi. Xem thng tin S280-90-1

Cnh bo: in p nguy him. Thit b ng ct v bin in p cao th phi c t trong lng th nghim hoc thit b bo v tng t trnh s c tip xc vi phn mang in cao th. Ni t tt c thit b chc chn. Khng tun th c th dn n t vong, tn thng nghim trng v h hng thit b.

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KT QU TH CAO P

Th cao p cung cp thng tin v tnh trng cch in ca recloser v tnh ton vn ca bung ct. Nu recloser vt qua th nghim 1 v 2 nhng khng vt qua th nghim 3, nguyn nhn c kh nng l do bung ct. Kim tra tng pha c lp xc nh li mt pha hay nhiu pha. Nu recloser khng vt qua th nghim 1, 2, hay 3, lin h vi trung tm bo tr hoc i din ca Cooper Power Systems Kim tra mun Nova i Nu pht hin mun Nova i b phng in b mt, ngh kim tra recloser c m bo vn hnh ng khng. Nu c nhng biu hin phng in b mt (c du bi than hoc i mu), quy trnh sau y c thc hin khi phc li trng thi ban u ca NOVA i: 1. ng dao ni tt v tho recloser khi li

ging nh miu t trong cm nang ny. 2. Kim tra h hi u cc mun, tho b

u cc hng v thay mi. 3. Kim tra h hi thanh dn ca m un.

Nu c h hi thanh dn th phi c thay th.

4. Xc nhn tht cn thn khng c h hi bushing m c th cn tr s vn hnh chnh xc. Kim tra s ton vn cc khoen nng.

5. Lau sch m un b h hi bng cn isopropyl v ming lau nylon (loi khng lm chy xc) loi cc bi than.

6. Kim tra bn in mi ca m un bng th cao p. Xc nhn tnh trng pha - t v pha pha. Xem mc Th Cao p trong cm nang ny.

X L S C

Nu recloser khng thc hin ng nh phn miu t Hot ng trong cm nang ny, cc thng tin sau y c th h tr x l s c: Reclose khng ng Chc chn cn vng c y ln ht Kim tra tt c cc u ni c ng khng Xc nhn t c ngun. Ngt ngun AC v kim tra c quy. Kim tra cu ch bo mach chuyn i DC-

DC. Reclose khng Ct bng in Kim tra tt c cc u ni c ng Xc nhn t c ngun. Kim tra cu ch bo mach chuyn i DC-

DC.

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