lt swgr test sch

8/20/2019 Lt Swgr Test Sch

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STATION: NTPC SIMHADRI BHEL REF NO : PS-DC-186-500-

NTPC REF NO: SIM/1/TS/ /

SHEET 1 OF 20

PLANT AREA : ELECTRICAL SYSTEM

TESTING SCHEDULE : LT SWITCHGEAR

LIST OF CONTENTS

1. PLANT DETAILS

2. TESTING OBJECTIVES

3. TESTING PROPOSALS

4. SERVICES REQUIRED

5. SAFETY PRECAUTIONS

6. EMERGENCY PROCEDURES

7. STATE OF THE PLANT

. COMMISSIONING PROCEDURE

!. COMPLETION CRITERIA

1".APPENDICES


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1.0 PLANT DETAILS #

1.1 415 V$%&' LT '()&*+,-/ *$0')'&' $ &($ ' '-*&)$0' A

B ()&+ ' *$%-/ -&(--0 &+-. T+- &($ '-*&)$0' /-

- /$ &($ )0)8)% $(-/ &/0'$/-/' 1A 0 1B )0

*'- $ '()&*+$/ '&/- /-9-/' )0 *'- $ MCC'

ACP'. T+- T/0'$/-/' ,-& &+-)/ '%)-' /$ 11:V 0)&

'()&*+,-/ ---/' TRF1 TRF2. 415 V$%&' U0)& '-/8)*-

'()&*+$/ --' &+- $)%-/' 0 &/)0- ;)%)/)-'<

=MCCS> S$$& %$(-/ MCC'


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LT SWITCHGEARS in NTPC Simhadri Project:

I.S@ITCHBOARDS

1. U0)& --/,-0*? '()&*+$/=1DG

2. U0)& S-/8)*- S()&*+$/=1DA

3. ESP1 &$ 4 LT M)0 '()&*+$/

=1DC


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2." TESTING OBECTI!ES :

2.1 T+- $-*&)8-' $ &+-'- &-'&' $0 &+- 415 V$%&' 0)&

'-/8)*- '()&*+,-/ /- &$ -0'/- &+& &+- -)-0& +'

--0 -/-*&- '&)'*&$/)%?< )' ')&- $/ &+- &? )& )'

/-)/- &$ -/$/< --&' &+- -'),0 0 *$0&*&

'-*))*&)$0' 0 )' &$ &+- /$/)&- I0)0< NTPC 0

$&+-/ /-%-80& -0,)0--/)0, '&0/ $/ *$- $ /*&)*-'.


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"#$ TESTING PROPOSAL :

3.1 E8-/? 415 V LT '()&*+,-/ *$0')'&' $ 0-/ $

-)-0&' 0 )& )' /$$'- &+& &+-'- ()%% - *+-*9-

)0)8)%%? ')0, '&0/ *+-*9 %)'&' 0 &-'&

/$*-/-' (+)*+ ()%% - /-*$/- )0 &+- &-'&)0,

'*+-%-.

3.2 C-/&)0 /$&-*&)$0' 0 )0&-/&/))0, &-'&' ()%% -

-&)%- )0 &+- &-'&)0, '*+-%-.

3.3 T+- 415 V 0)& '-/8)*- ' '-*&)$0' BC ()%% - *+/,-

&+/$,+ &+- 2""" :VA 0)& '-/8)*- &/0'$/-/' A $/ B '

-/ 8)%)%)&? $ &+- &/0'$/-/' 0 11 :V 0)& '.

3.4 O&+-/ LT '()&*+,-/' /- &+-/-&-/ *+/,- ' -/ &+-

/-)/--0& 0 8)%)%)&? $ '%)-'

3.5 I& ()%% - &+- &? $ &+- T-'&)0, &- %--/ &$ -0'/-&+& (+-0 &+- '?'&- )' $-/&)0, 0-/ %$ *$0)&)$0<

%% &+- -)-0& (+)*+ )' &+- '-*& $ &+)' &-'&)0,

'*+-%- '+%% - -;&-/0%%? )0'-*&- $/ 0? '),0 $

'&/-'' $/ 0$/%)&? 0 &+& /-$/& )' /-/-

/-*$/)0, &+- /-'%&' $ )0'-*&)$0 0 *$? &&*+-

' 0 -0); &$ &+)' '*+-%-.


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%#$ SER!ICES RE&'IRED :

4.1 I0 G-0-/% $/ *//?)0, $& &+-'- &-'&' &+- '-/8)*-' $

&+- )&-' %)'&- -%$( /- /-)/- 8/)%- 22" V$%&' D.C

0 41524" V$%&' A.C '%)-'.

4.2 INSULATION TESTER 5""V DC HAND OPERATER

4.3 CALIBARATION SOURCE :ID FOR CALIBARATION OF

METERSTRANSDUCERS.

4.4 MICRO OHM METER.


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5$0 SAFET( PRECA'TIONS #

5.1 SAFETY OF THE PLANT #

5.1.1 T+- &-'& -&+$ '& - '&/)*&%? +-/- &$ & %%

&)-' -;*-& )0 &+- $%%$()0, ')&&)$0.

. I0 0 --/,-0*? ')&&)$0.

. B? ,/---0& ()&+ &+- ($/9)0, /&?.

*. O0 )0'&/*&)$0 $ &+- &-'& &- %--/.

5.2 SAFETY OF THE PERSONNEL #

5.2.1 A%% &+- --/' $ &+- &-'&)0, &- 0 -/'$0'

''$*)&- ()&+ &+)' &-'&)0,*$)'')$0)0, '*+-%-

'+$% - )%)/ ()&+ &+- &-'&)0, /$*-/-' 0

&+- -)-0&' )08$%8- )0 &-'&)0,.

5.2.2 T+-/- '+$% - '- **-'' &$ 0 -'*- /$&-'

/$ *$0)0- /-'.

5.2.3 T+- /- 0-/ &-'& '+$% - *%-/%? -)0-.

5.2.4 A**-'' &$ &+- /- 0-/ &-'& '+$% - /-'&/)*&-<

/$-/ *&)$0 $/' '+$% - )'%?- & &+-

&-'& /-.

5.2.5 P-/0-0& 0 -&- %),+&)0, *)%)&)-' '+$% -

8)%%- & %% &)-'.

5.2.6 A%% +0/)%< '&)/'< ,/' 0 &/-0*+ *$8-/'

'+$% - /$-/%? )&&-/-%*-.

5.2.7 T+- &-'& /- '+$% - *%-/ $ $'&/*&)$0'.

5.2. S-&? *%-/0*- *-/&))*&-' 0 '-&? *%-/0*-

0$&))*&)$0' '+$% - )0 $/*- $/ &+-

)0'&%%&)$0' &$ - -0-/,)'-.

5.2.! T+- $-/&)0, -/'$00-% '+$% - 9-& )0$/-

$& &-'&)0,.


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6." E)ERGENC( PROCED'RE #

6.1 I& ()%% - &+- /-'$0'))%)&? $ &+- &-'&)0, &- %--/

&$ )0$/ %% --/' $ &+- &-'&)0, &- (+& *&)$0'

/- &$ - &9-0 )0 &+- -8-0& $ )/-< **)-0& $/ $&+-/

$/ )0*)-0&.

6.2 T-%-+$0- 0-/' $/ )/'& )%0*-< )/- '&&)$0'

0 +$')&%' '+$% - -/ $0&+%? )'%?- *-0& &$

-8-/? &-%-+$0-.

6.3 F)/'& ) *+/&' $/ &/-&-0& $ -%-*&/)*% '+$*9 '+$%

- )'%?- 0-/ &+- &-'& /-.

6.4 I0 &+- -8-0& $ 0? '),0 $ 0$/%)&?< &+- '$/*- $

'%? $/ &+- /&)*%/ -)-0&/- '+$% -

)'$%&- )-)&-%?.


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7." STATE OF THE PLANT :

7.1 T+- $%%$()0, )&-' 0 &+-)/ ''$*)&- -)-0&'

'& - -/-*&-< *$%-&-< **-'')%- $/ &-'&)0,

0 8)%%- $/ '-.

I0 *'- $ *+/,)0, U0)& S-/8)*- '()&*+$/

1. 11:V *%-' /$ 11:V 0)& ' 1A 0 1B &$ 2""" :VA

0)& '-/8)*- &/0'$/-/' 1A 0 1B /-'-*&)8-%?

2""" :VA =11:V415V> 0)& '-/8)*- &/0'$/-/' 1A

0 1B.

2. 415 V ' *&' /$ 0)& '-/8)*- &/0'$/-/' 1A

0 1B &$ 415V 0)& '-/8)*- '()&*+$/ 1 '-*&)$0 A

B 0 &)- /$ '-*&)$0 A &$ '-*&)$0 B.

3. 415 V 0)& '-/8)*- '()&*+$/ 0$.1 *$%-&- ()&+

%% )&' *)/*)& /-9-/' *$0&/*&$/' 0 ''$*)&-

-)-0&'.

7.2 A' $8- $&+-/ S()&*+$/'< MCC' 0 A;. C$0&/$%

0-%' /- &$ - *+/,- **$/)0, &$ &+-)/

/-)0-'' 0 &+- 8)%)%)&? $ '&/- '%?.

7.3 E/-*&)$0 *$%-&)$0 *-/&))*&-' 0 0*&/-/'

&-'& *-/&))*&-' '+$% - 8)%%- $/ *$0&*&$/'

0 ''$*)&- -)-0&'.

7.4 T+- &)- -&(--0 --/,-0*? '()&*+$/ 0 &+- 415V

0)& '-/8)*- '()&*+$/ '& - - 0 )'$%&-

/$ %% '$/*-' $ '%? 0 '-&? /$*-/-

$%%$(- &$ -0'/- &+& &+- &)- /-)0 -.

7.5 F$/ &+- *+-*9' 0 &-'&' &$ - *//)- $& ?

-0-/,)')0, &+- -)-0& &$ 0$/% ($/9)0, 8$%&,-<

&+- 11:V 0)& '()&*+,-/ 0$1 '-*&)$0' AB '+$% -

)0 0 -0-/,)'- *$0)&)$0 0 &+- SCL' $/ &+-


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---/ O&,$)0,' &$ AB 0)& '-/8)*- &/0'$/-/'

'+$% - *$%-&- 0 $0 '&)'*&$/?.

7.6 F$/ *//?)0, $& '&0/ *+-*9 %)'&' 0 &-'&

/$*-/-' (+)*+ /$ /& $ &+)' &-'&)0,

'*+-%-< %% -)-0&' *$8-/- ? &+)' &-'&)0,

'+%% - - 0 )'$%&- /$ %% '$/*-' $

'%?.

7.7 T+- ''$*)&- DASA000*)&)$0 '*+-- )' *$%-&-<

&-'&- 0 )0 '-/8)*-.

7. T+- *$0&/$% '%)-' /- 8)%%-.


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8$0 CO))ISSIONING PROCED'RE #

.1.1 C//? $& 0*&)$0% *+-*9' &$ /$8- &+- $-/&)$0

$ )0&-/%$*9')0&-/&/))0, -&(--0 &+- 415 V$%&'

)0*$)0, 0 '*$%-/ /-9-/' )0 -*+ '()&*+$/

MCC

.1.2 C//? $& 0*&)$0% *+-*9' &$ /$8- &+- $-/&)$0

$ )0&-/%$*9 0 )0&-/&/))0, -&(--0 &+- 11 :V

'&/- 0 415 V$%&' *)/*)& /-9-/ (+-/-8-/

/-)/-.

GENERAL CHEC:S#

)> INSPECT ANY PHYSICAL DAMAGE IN THE BUSBAR<

INSULATION< PANEL DOORS< PO@ER SLIDING CONTACTS

ETC. AND TO BE RECTIFIED IF FOUND

))> MA:ING THE PANEL INSIDE DUSTFREE FREE FROM FOREIGN

MATERIALS

)))> CHEC:ING THE TIGHTNESS ALIGNMENT CLEARANCE OF BUS

BARS


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SHEET 12 OF 20



OF INPUT PO@ER CABLES AND MODULE PO@ER CONTROL OPS

CONTROL INTERNAL @IRINGS

)8> INSPECT ALL RELAYS AND MA:E SURE THAT ANY BLOC:ING

USED FOR SHIPPING PURPOSE IS REMOVED AND THE

ARMATURE MOVES FREELY.

8> CHEC: ALL DOORS FOR PROPER MOUNTING @ITH RESPECT TO

THE S@ITCH HANDLE.

8)> CHEC: DOOR INTERLOC: MECHANISM

8))> TEST THE PT' CHEC: THE PROTECTION CIRCUIT @IRING CONNECTIONS BY

CONDUCTING PRIMARY INJECTION CURRENT

;)> CHEC: THE INPUT PO@ER CABLE TERMINATIONS FROM

TRANSFORMER SECONDARY


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;))> ENSURE THE PHASE SEQUENCE AND CT LIN:S ARE PROPER

BEFORE CHARGING THE PANEL.

;)))> CHEC: CLOSING TRIPPING MECHANISM OPERATES

SMOOTHLY BOTH MANUALLY AND ELECTRICALLY

;)8> SPACE HEATERS THERMOSTAT SHALL BE IN GOOD

CONDITION


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.2 ENERGISING CHEC:S

.2.1 C+-*9 &+& '-&? N$&)*-' +8- --0 )'%?- & &+-

&-'& /- 0 &+& &+- '-&? *%-/0*- *-/&))*&-

+' --0 )''- 0 )' --*&)8-.

.2.2 C+-*9 &+& *$0)*&)$0' +8- --0 '&)%)'-

-&(--0 11 :V '()&*+,-/


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.2.7 E0'/- &+& /$&-*&)$0 /-%? '-&&)0,' /- *$//-*&

$/ ---/ VCB' & HT '()&*+,-/ 0 )0*$-/' & LT

'()&*+,-/.

.3 ENERGISING PROCEDURE#

.3.1 E0-/,)'- &+- 415 8$%&' '()&*+,-/ *$0&/$% *)/*)&

' /$ )&' 0$/% '$/*- $ '%?.

.3.2 P& &+- 415 8$%&' *)/*)& /-9-/=I0*$-/ 1> )0 &-'&

$')&)$0 ()&+ '-%-*&$/ '()&*+ )0 LOCAL

.3.3 *%$'- 0 $-0 &+- /-9-/ /$ %$*% 0 *+-*9 &+&

&+- '&&' )0)*&)$0' /- *$//-*&.

.3.4 C//? $& &+- &-'&' .3.2 .3.3 $/ &+- 0-;&

)0*$-/ 0 '*$%-/ $/ &+- '- LT

S()&*+,-/.

.3.5 P& &+- 11 :V /-9-/ $/ $(-/ &/0'$/-/ A )0

&-'& $')&)$0 ()&+ &+- '-%-*&$/ '()&*+ &$ )0&-/%$*9

OUT $')&)$0.

.3.6 C%$'- 0 $-0 &+- 11 :V /-9-/ /$ %$*% 0

*+-*9 &+& '&&' )0)*&)$0' /- *$//-*&


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.3.7 P& &+- '-%-*&$/ '()&*+ &$ )0&-/%$*9 IN 0 *%$'-

0 $-0 &+- /-9-/ /$ UCB 0 *+-*9 &+& '&&'

)0)*&)$0' /- *$//-*&.

.3. C//? $& &+- &-'&' .3.6 .3. $/ 11 :V /-9-/

T/0'$/-/ B

.3.! P& &+- 11 :V /-9-/ &/0'$/-/ A )0 '-/8)*-

$')&)$0 ()&+ &+- '-%-*&$/ '()&*+ &$ )0&-/%$*9 IN

$')&)$0.

.3.1" C%$'- &+- 11 :V /-9-/ /$ UCB &$ )/'& -0-/,)'-

&+- P$(-/ T/0'$/-/ A

.3.11 O-0 0 *%$'- &+- 11 :V /-9-/

.3.12 N$&- &+- -&-/ $/ &+- &/0'$/-/ H.V ')- $/

0? 0$/% *//-0&. C+-*9 &+- &/0'$/-/

-;&-/0%%? $/ 0? 0$/%)&?.

.3.13 I .3.13 )' O.:.


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8$%&,- /-%?' /- )0 )*9- =-0-/,)'->

*$0)&)$0. C+-*9 +'- /$&&)$0.

.3.16 C+-*9 -;&-/0%%? $/ 0? 0$/%)&? ()&+ &+- 415

V$%&' LT '()&*+$/.

.3.17 I0)&)&- &/))0, &+/$,+ $8-/*//-0& /-%? $0 &+-

11 :V ')- 0 *+-*9 &+& $&+ &+- 11 :V 0 415

V$%&' /-9-/' $ &+- $(-/ &/0'$/-/ A &/).

.3.1 I .3.16 0 .3.17 /- O.:.< & &+- 415 V$%&'

'*$%-/ /-9-/ $/ LT '()&*+,-/ )0 SERVICE

$')&)$0 ()&+ &+- '-%-*&$/ '()&*+ )0 REMOTE

.3.1! C%$'- &+- 11 :V 0 415 V$%&' /-9-/'=I0*$-/ 2>

$/ $(-/ &/0'$/-/ B )0 TEST $')&)$0

.3.2" C%$'- &+- 415 8$%&' '*$%-/ /-9-/ /$ UCB &$

)/'& -0-/,)'- &+- '-*&)$0 B $ &+- LT '()&*+,-/

.3.21 N$&- &+- -&-/ )0 )0*$-/A 0-% $/ 0? 0$/%

*//-0&. A%'$ 0$&- &+- 8$%&-&-/ )0 ' '-*&)$0 B

$/ *$//-*& ' 8$%&,-'.

.3.22 C+-*9 &+& &+- 0-/8$%&,- /-%?' )0 '-*&)$0 B /-

)0 )*9- *$0)&)$0 =-0-/,)'-> *$0)&)$0.

.3.23 C+-*9 -;&-/0%%? $/ 0? 0$/%)&? ()&+ &+- 415

V$%&' )0 ' '-*&)$0 B

.3.24 S()&*+ $ &+- ' *$%-/ /-9-/


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.3.25 I .3.22 &$ .3.24 /- O.:.< & &+- 11 :V /-9-/

$/ $(-/ &/0'$/-/ B )0 SERVICE $')&)$0 ()&+

)&' '-%-*&$/ '()&*+ &$ )0&-/%$*9 IN

.3.26 C%$'- &+- 11 :V /-9-/ $/ $(-/ &/0'$/-/ B /$

UCB &$ )/'& -0-/,)'- &+- &/0'$/-/.

.3.27 O-0 0 /-*%$'- &+- 11 :V /-9-/

.3.2 N$&- &+- -&-/ $0 &+- 11 :V ')- $ &+-

&/0'$/-/ $/ 0? 0$/% *//-0&

.3.2! C+-*9 -;&-/0%%? $/ 0? 0$/%)&? ()&+ &+-

&/0'$/-/ B

.3.3" I .3.2! 0 .3.3" /- O.:.< & &+- 415 V$%&'

/-9-/=I0*$-/ 2> $/ T/0'$/-/ B )0 SERVICE

$')&)$0 ()&+ )&' '-%-*&$/ '()&*+-' )0 REMOTE

.3.31 C%$'- &+- 415 8$%&' /-9-/ $/ &+- &/0'$/-/ &$

-0-/,)'- &+- ' '-*&)$0 B

.3.32 N$&- &+- -&-/ 0 8$%&-&-/ )0 ' '-*&)$0 B $/

0? 0$/% *//-0& 0 8$%&,-.

.3.33 C+-*9 +'- /$&&)$0 $ B '-*&)$0 0 +'- )0

+'- $& -&(--0 '-*&)$0 A B

.3.34 I -8-/?&+)0, ()&+ &+- &/0'$/-/' 0 &+- LT

'()&*+,-/ /- O.:. 9-- &+- &/0'$/-/' 0 &+-

415 8$%&' ' -0-/,)'- $/ 24 +$/'.


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.3.35 A&-/ 24 +$/' *+-*9 &+& &+-/- )' 0$ 0$/%)&?

()&+ &+- &/0'$/-/' 0 &+- 415 V$%&' LT

'()&*+,-/. A%'$ *+-*9 -/)$)*%%? *+$%&K /-%?

$/ 0? *+- ,' $0 )0.

.3.36 F$/ MCC' A;. C$0&/$% 0-%'


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1". APPENDICES

DRA@INGS # SLD OF ELECTRICAL SYSTEM AU PO@ER

DISTRIBUTION

SCHEMATIC DIAGRAM OF LT S@ITCHGEARS =USS

DATA FOR LT S@ITCHGEAR =PEOM165"6

"327>

LOG SHEETS # I> IR VALUES TEST REPORT OF RELAYS UNDERVOLTAGE

lt swgr test sch

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