1lj-i 85-2003 Coordonarea Izolatiei in Lea Jt

7/27/2019 1lj-i 85-2003 Coordonarea Izolatiei in Lea Jt

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1 LJ - I 85 - 03

35(6&5,3 ,,'(&225'21$5($,Z2/$ ,(,1,167$/$ ,,/('(',675,%8 ,('(

-2$6 7(16,81(

- 2003 -


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,QVWLWX LDUHVSRQVDELO GHHODERUDUHDQRUPHLWHKQLFHHQHUJHWLFHS.C. ELECTRICA S.A.

Executant:Societatea Inginerilor Energeticieni din Romania5HVSRQVDELOLGHOXFUDUH'ULQJ) QLF 9DWU LGUG$QD3RLGD


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C U P R I N S

pag.

1.- Scopul ....................................................................................................................... ... 4

2.- Domeniul de aplicare ................................................................................................. ... 4

3.-7HUPLQRORJLHLDEUHYLHUL ........................................................................................... ... 5

4.-$FWHQRUPDWLYHGHUHIHULQ ..................................................................................... ... 11

5.-$OHJHUHDLFRRUGRQDUHDLzROD LHL............................................................................. ... 12

6.-3URWHF LDvPSRWULYDVXSUDWHQVLXQLORUGHWU VQHW........................................................ ... 16

7.-5HFRPDQG ULSULYLQGSUL]HOHGHS PkQW .................................................................. ... 25

8.-5HJXOLSHQWUXvQFHUFDUHDL]ROD LHLGHMRDV WHQVLXQHFXWHQVLXQHGHLPSXOV............. ... 26

ANEXE:

Anexa A.- Detaliu de montare a contoarelor electrice trifazate n PT aeriene .......... ... 27Anexa B.- Lungimile cablurLORUGH07FDUHDVLJXU DXWRSURWHMDUHD ........................ ... 28

Anexa C.-'LVWDQ DGHSURWHF LHDXQXLGHVF UF WRUFXUH]LVWHQ YDULDELOD.............. ... 29

Anexa D.-3ULQFLSDOHOHFDUDFWHULVWLFLHOHFWULFHDOHGHVF UF WRDUHORUFXUHzLVWHQ varLDELO .................................................................................................. ... 30


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3.50.- ncercarea de tip este ncercarea HIHFWXDW SH XQXO VDX PDL PXOWH DSDUDWH

UHDOL]DWH GXS R DQXPLW FRQFHS LH SHQWUX D VH DU WD F DFHD FRQFHS LH U VSXQGH laDQXPLWHVSHFLILFD LL

Fig. 3.1.-+DUWDL]RNHUDXQLF D5RPkQLHL1XP UXOPHGLXGH]LOHFXRUDMHSHDQL-1978.


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Tabelul 5.27HQVLXQHDGH LQHUHla impuls, n kVmax

'LVWDQ HGHL]RODUHvQaer minime, n mm

20 2515 1812 1410 118 86 5,55 44 33 2

2,5 1,51,5 0,5

5.3.4.- n cazul liniilor electrice aeriene clasice cu conductoare neizolate,caracteristicilor izolatoarelorse vor stabili LQkQGVHDPDGH

D7HQVLXQLOHGH LQHUHFRUHVSXQ] WRDUHVROLFLW ULORUHOHFWULFHPHQ LRQDWHODSFWE9DULD LDWHQVLXQLORUQRPLQDOHGH LQHUHVXESORDLHc) Comportarea izolatoarelor n zonele cu diferite grade de poluare (tabelul 5.3).

Tabelul 5.3.-/XQJLPHDOLQLHLGHIXJ VSHFLILF FPNV)

Nivel de poluare /LQLHLGHIXJ QRPLQDO VSHFLILF PLQLP FPN9

I Slab

1,6

II Mediu 2,0

III Puternic 2,5IV Foarte puternic 3,1

Note 1.-7DEHOXOVHUHIHU ODWRDWHWLSXULOHGHL]RODWRDUHGHH[WHULRUGLQFHUDPLF LGLQVWLFO VLWuatevQWUHID]HLS PkQWLDUYDORULOHUHSUH]LQW UDSRUWXOGLQWUHOLQLDGHIXJ P VXUDW vQWUHID] LS PkQWLYDORDUHDHILFDFHDWHQVLXQLLvQWUHID]HFHDPDLULGLFDW DUH HOHLQFD]XO

L]RODWRDUHORUVLWXDWHvQWUHID]HGHH[HPSOXGLVWDQ RDUHvQWUHID]HYDORULOHOLQLHLGHIXJ

VSHFLILFHPLQLPHGHPXOWLSOLF FX 3 vQFD]XOUH HOHORUWULID]DWH2.- QFD]XULH[FHS LRQDOHGHSROXDUHH[FHVLY ROLQLHGHIXJ VSHFLILF GHFPN9SRDWH

ILLQVXILFLHQW QED]DH[SHULHQ HLGHH[SORDWDUHLVDXDvQFHUF ULORUGHODERUDWRUVHSRDWHutiliza o valoarHDOLQLHLGHIXJ VSHFLILFHPDLPDUHVDXSRDWHILDYXW vQYHGHUHVS ODUHD

VDXXQJHUHDL]ROD LHL


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Fig.6.4.-6FKHP HOHFWULF GHSULQFLSLXFXGHVF UF WRDUHGHFODV &L'

Fig.6.5.-6FKHP HOHFWULF GHSULQFLSLXFXGHVF UF WRDUHGHFODV &L'


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ANEXA ADETALIU DE MONTARE A CONTOARELOR ELECTRICE

TRIFAZATE N P.T. AERIENE

Note: 1.-6HYDDVLJXUDRGLVWDQ PLQLP GHL]RODUHvQWUHRULFDUHSDUWHDFRQWRUXOXLL

S U LOHPHWDOLFHDOH7*GHPLQLPXPPP2.-%RUQDGHOHJDUHODS PkQt a carcasei contorului se va lega prin conductorL]RODWODQXOXOUH HOHLGHMRDV WHQVLXQH

3.-&DSDFXOGHSHSODFDGHERUQHDFRQWRUXOXLQXVHYDPRQWDO VkQGX-se ninteriorul T.G. pentru a se putea verifica dLUHFWODERUQHOHFRQWRUXOXLSUH]HQ Dtensiunii pe toate fazele.

6&+(0$(/(&75,& '(/(*$5($&2172$5(/25(/(&75,&('((1(5*,($&7,9 137$(5,(1(

/HJ WXULOH , L ,, YRU IL OHJ WXUL FX

conductoare distincte, fiind categoricinterzis a se crea un conductor comunSHQWUXFHOHGRX OHJ WXUL

/HJ WXUD,-DVLJXU OHJDUHDODS PkQWprin PE al carcasei contorului.

/HJ WXUD ,, HVWH OHJ WXUD GLQ FLUFXLWXOGHP VXUDUHDFRQWRUXOXLWULID]DW

1RW : - 1XOXOUH HOHLGHMRDV WHQVLXQHeste izolat fD GH FXWLD GH GLVWULEX LH(T.G.) a P.T.

%8& '(3(57,1$;3(17580217$5($&2172$5(/25

PE SUPORT IZOLANT

a Cornier sudat pe TG al PTAE3LXOL PHWDOLF FDLE PHWDOLF

G%RUQDGHOHJDUHODS PkQWDcarcasei contorului la priza deexploatare, prin conductorul de

QXODOUH HOHLGHMRDV WHQVLXQHH%XF HOHFWURL]RODQW GLQFDXFLXFI U QHJUXGHIXP) 20)IXUXEGLQPDWHULDOSODVWLF

electroizolant PASg Conductor Cu 6 mm

2FXL]ROD LHGH39&K3ODF GHERUQH

II


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ANEXA B .-/81*,0,/(&$%/85,/25'(07&$5($6,*85 $8723527(-$5($

Prevederi din normativul NTE 001/03/00/2003

n conformitate cu pct.7.2.8. 6HUHFRPDQG V VHUHQXQ HODXWLOL]DUHDGHDSDUDWHOHGHSURWHF LHDSRVWXULORUGHWUDQVIRUPDUHFXLQWUDUHvQFDEOXvQFD]XOvQFDUHOXQJLPHDSRU LXQLL

de linie n cablu la intrarea n post este mai mare dect lungimile prezentate n tabelul B.1.

Tabelul B.1.-/XQJLPHDPLQLP DFDEOXOXLGHPHGLHWHQVLXQHFDUHDVLJXU DXWRSURWHF LDcablului n schema sOLQLHHOHFWULF DHULDQ - cablu - transformators.

Raportul J dintreLPSHGDQ DFDUDFWHULVWLF

D/($LDFDEOXOXL

Lungimea cablulXLPFDUHDVLJXU DXWRSURWHF LDn cazul n care raportul dintre tensiunea de 50%

FRQWXUQ ULDL]ROD LHLOLQLHLLWHQVLXQHDQRPLQDO GHLQHUHDFDEOXOXLHVWH

1 1,2 1,4

1020

40

1000450

250

1100600

300

1300760

350Note:*) - ParaPHWULLGHFDOFXOSHQWUXFDEOXULVHYRUOXDGLQFDWDORDJHOHGHIDEULFD LHVDXGLQP VXU WRUL-3DUDPHWULLSHQWUXOLQLLYRUILFDOFXOD L LQkQGX-VHVHDPDGHFDUDFWHULVWLFLOHJHRPHWULFHL

electrice ale acestora.-3HQWUXYDORULOHLQWHUPHGLDUHVHSRWIDFHLQWHUSRO UL

n conformitate cu pct.7.2.9, n posturile de transformare, la care lungimea cablului dePHGLHWHQVLXQHHVWHPDLPLF GHFkWOXQJLPLOHSUH]HQWDWHvQWDEHOXO%SURWHF LDSHSDUWHDde medie tensiunne se reali]HD] FXGHVF UF WRDUHFXUH]LVWHQ YDULDELO SHED] GHR[Lzimetalici FDUHVH YRU PRQWDvQ SRVWXO GHWUDQVIRUPDUH'DF GLQ PRWLYH GHVSD LXDFHVWHGHVF UF WRDUHQXVHSRWPRQWDvQSRVWSURWHF LDFRQWUDVXSUDWHQVLXQLORUGHWU VQHWVHYDUHDOL]D SULQ PRQWDUHD VHWXOXL GH GHVF UF WRDUH FX UH]LVWHQ YDULDELO SH ED] GH R[LzimetaliciSHMRQF LXQHDsOLQLHHOHFWULF DHULDQ - cablus.


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ANEXA C

',67$1 $'(3527(& ,($818,'(6& 5& 725&85(=,67(1 $9$5,$%,/

'LVWDQ D PD[LP SH FDOHD GH FXUHQW vQ FDUH XQ GHVF UF WRU DVLJXU SURWHF LD XQXL

HFKLSDPHQWVHSRDWHGHWHUPLQDRULHQWDWLYFXUHOD LD

'l= (Uiz - Urez) * K/ 2a

unde: UizHVWHWHQVLXQHDGH LQHUHODLPSXOVGHWU VQHWDL]ROD LHLOD-3 Ps, n kVmax;Urez -WHQVLXQHDL]LGXDO ODFXUHQWQRPLQDOGHGHVF UFDUHvQN9max;a- panta undei de supratensiune, n kVmax/m;K-FRHILFLHQWFDUH LQHVHDPDGHLQIOXHQ DSDUDPHWULORUVFKHPHLYDORULOH

coeficientului Ksunt indicate n tabelul C.1.

'HRELFHLWHQVLXQHDGH LQHUHODLPSXOVGHWU VQHWDL]ROD LHLSHQWUXWLPSLGH-3 Ps este

LQGLFDW GH IXUQL]RU Q FD]XO vQ FDUH QX VH GLVSXQH GH DFHVWH GDWH VH SRDWH XWLOL]DYDORDUHDWHQVLXQLLGHFRQWXUQ ULODLPSXOVGHWU VQHWVWandardizat (1,2/50 Ps).

9DORDUHDSDQWHLXQGHLVHGHWHUPLQ FXUHOD LD

a= S/c,

unde: SHVWHSDQWDXQGHLGHVXSUDWHQVLXQHH[SULPDW vQN9PVvQJHQHUDOVHFRQVLGHU S=10 kV/Ps;

c- vitreza de propagare a undei (300 m/Ps pHQWUX/($L150 m/Ps pentru cabluri).

Tabelul C.1.Nr.crt.

6FKHPDLQVWDOD LHL Valoare K

1. /LQLHI U EUDQDPHQWH]RQD$ 12. /LQLHI U EUDQDPHQWH]RQHOH%L& 1,251. /LQLHI U EUDQDPHQWH]RQD' 1,8

Exemplu de calcul:

S= 10 kV/Ps

c= 300 m/Ps pentru LEA a= S/c = 0,0333 kV/m

Uiz = 20 kVUrez = 2,5 kV

K= 1 'l= (Uiz - Urez) * K / 2a= 262,5 m

Uiz = 20 kVUrez = 2,5 kV

K = 1,8 'l= (Uiz - Urez) * K / 2a= 472,5 m


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D.3.-&RQGL LLWHKQLFHRULHQWDWLYHSHQWUXGHVF UF WRDUHGHMRDV WHnsiuneFXUH]LVWHQ YDULDELO SHEDz GHR[L]LPHWDOLFL

Nr.

crt.

Valori

1.

n) V 400

2.

Hz 50

3.

N

montate ntre:

-

j

m n

-

V 230

400

4.

c) pentru "

j

-

j

m n

-

V

254

440

5.

8/20s) kA 10 5 2,5 1,5

6.

Imax)(

8/20

s)

kA

40

25

15

10

7.

Urez) la curent nominal kV 2,0

3,0

UN

2,34,0

UN

3,0

5,0

UN

3,5

5,5

UN8.

p) kV 3,0

4,5UN

3,5

6,0UN

4,5

7,5UN

5,2

8,0

UN

9. Temperatura mediului ambiant: - exterior/ interior0C -30

+40 / - 5

+40

10.

!

z

j

kW/m2

1,1

11.

!

% 90 /100

12. Capabilitatea de desc

{

kJ/kVUn Da

13. Dispozitiv de deconectare Da/Nu

-

}

~

j

z

1lj-i 85-2003 Coordonarea Izolatiei in Lea Jt

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