Unit -1 Over Hauling 2016 March

7/26/2019 Unit -1 Over Hauling 2016 March

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UNIT-1 MINI OVER

HAULING

ELECTRICAL DEPARTMENT

Generator Transformer-1:

Preventive maintenance was complete!

All coolin" #ans PM $o% was one an trial r&n was ta'en!

OLT( control panel ti")tness was c)ec'e!

Trans#ormer HT an LT *ie +le,i%le $oint (onnection conition an Terminal

connection c)ec'e an ti")tness was one! Protection Testin" o# Trans#ormer .&c)ol/ rela0 PRV 2 OLT( Teste an trippin"

o# rela0 was con3rme! Eart)in" (onnection 4NGRT connection was c)ec'e an ti")tness was one!

Unit Auxiliary Transformer



UAT trans#ormer preventive maintenance was complete!

IR val&e was c)ec'e an #o&n a%ove 56Go)m!

Trans#ormer e,ternal cleanin" was one!

Trans#ormer HT *ie +le,i%le $oint (onnection 4.&s &ct sie %&s conition an

Terminal connection c)ec'e an #o&n Normal!

LT *ie Power ca%le connection ti")tness c)ec'e 2 ca%le )ealt)iness c)ec'e

#o&n Normal! Protection Testin" o# Trans#ormer .&c)ol/ rela0 2 PRV Teste an trippin" o#

rela0 was con3rme! UAT Trans#ormer -(oolin" +an Motors PM $o% Ta'en -trail r&n ta'en #or all t)e

motors wor'in" Normal!

ELECTRICAL PREENTIE MAINTAINANCE !" LU#E !IL M!T!R$:

A!P7

(oolin" #an (over was remove an cleanin" was one an ti")tness was

c)ec'e! 8inin" resistance val&e was c)ec'e an #o&n normal!

Me""er val&e was wit) respect to eart) was a%ove 966Mo)m

LP. an $. sie ti")tness was c)ec'e an #o&n normal!

+eeer sie contactor was cleane an ti")tness was also c)ec'e!

(ontrol testin" was normal!

:e-"reasin" was one at %ot) :E an N:E sie o# t)e motor!

Power Terminal ti")tness was c)ec'e at %ot) motor an panel en!

(ontactor tips were cleane at panel en!

(ontrol terminal ti")tness was c)ec'e at panel en!

M!P:













%!P7





+eeer sie contactor was cleane an ti")tness was also c)ec'e! (ontrol testin" was normal!





#arrin& Gear Motor 7

8inin" resistance val&e was c)ec'e an #o&n normal!

Me""er val&e was wit) respect to eart) was a%ove ;66Mo)m

+eeer sie contactor was cleane an ti")tness was also c)ec'e! Power Terminal ti")tness was c)ec'e at %ot) motor an panel en!


(ontrol trial was ta'en an #&nctionin" o# t)e contactors were c)ec'e an

#o&n o'

ELECTRICAL PREENTIE MAINTAINANCE !" #!ILER "AN M!T!R$:

ID 1A7


c)ec'e! Me""er val&e was wit) respect to eart) was a%ove ;66Mo)m








ID 1#:


c)ec'e! Me""er val&e was wit) respect to eart) was a%ove 966Mo)m







PA 1A7


c)ec'e! Me""er val&e was wit) respect to eart) was a%ove ;66Mo)m






PA 1#7


c)ec'e! :riven en cover was remove an .earin"s was replace wit) new %earin"s!

Me""er val&e was wit) respect to eart) was a%ove ;66Mo)m








$A 1A:









$A 1#:









$'it()yar* Maintenan(e +o,s:

596<V .rea'er $&nction %o, was cleane an .M< was cleane an all t)e

control ca%les o# t)e %rea'er ti")tness were c)ec'e!



596<V (VT- $&nction %o, was cleane an all t)e control ca%les o# t)e (VT

ti")tness were c)ec'e!

596<V (T $&nction %o, was cleane an all t)e control ca%les o# t)e (T

ti")tness were c)ec'e!

596<V Isolator $&nction %o, was cleane an all t)e control ca%les o# t)e

Isolator ti")tness were c)ec'e!

ELECTR! $TATIC PRICIPITAT!R !ER AULING:

+o&r n&m%ers o# s&pportin" ins&lators cleane an conition c)ec'e #o&n

)ealt)0!

Rappin" s0stem #or %ot) emittin" an collectin" Motor ()ec'e 2 trail r&n ta'enwor'in" normal *e=&ence operation #or Emittin" 2 (ollectin" rappin" ()ec'e#o&n normal!

Trans#ormers %ot) Primar0 2 *econar0 terminal (onnection ti")tness c)ec'e

2 IR Val&e c)ec'e #o&n Normal!E*P +iel Me""er Val&e c)ec'e a%ove 166 Mo)m!

"D Dri.e Maintenan(e %o,s!

V+: .ot) Master an slave rive cover opene (leane an terminal

ti")tness 2 Electronics cars cleanin" an )ealt)iness o# IG.T (onition

c)ec'e !#o&n Normal!

Panel Eart)in" (onnection 4 Inp&t an o&tp&t ()oc' conition c)ec'e O<!

:rive Panel %ac' sie .&s %ar (onnection ti")tness 4 (leanin" wor'

(omplete!

V+: :rive Parameter settin"s c)ec'e 2 :rive Local 4Remote Operation

c)ec'e %ot) sie rive wor'in" conition c)ec'e r&nnin" Normal!



#attery ,an/ PM %o,!

.atter0 %an' Pm >o% was ta'en an all t)e %atter0 terminals were cleane %0

&sin" air %lower an petrole&m >ell0 was applie in all t)e terminals!

.atter0 volta"e c)ec'e in all t)e inivi&al cells an val&es were entere in

%atter0 lo" note!

+o&r no?s o# %atter0 volta"e were c)ec'e an #o&n low so %atteries were

replace!

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Unit -1 Over Hauling 2016 March