P a g e| 1HEAVY EQUIPMENTREPAIR PLANTBharat Heavy Electricals
Limited VaranasiAn ISO 9001-2000, ISO-14001 & OHSAS-18001
certified companyIndustrial TrainingHERP, Varanasi.P a g e|
2ACKNOWLEDGEMENTI am extremely thankful & indebted to the
numerous Bharat Heavy Electrical imited HeavyE!ui"ment Re"airin#
Plant $HERP% En#ineers, &ho "rovided vital information about
thefunctionin# of their res"ective de"artments thus hel"in# me to
#ain an overall idea about the&orkin# of or#ani'ation. I am
hi#hly thankful for the su""ort & #uidance of each of them.I am
hi#hly indebted to my "ro(ect #uide, )r. *heerendra +umar ,u"ta sir
for #ivin# me hisvaluable time and hel"in# me to #ras" the various
conce"ts of "o&er distribution e!ui"ments andtheir control and
use.ast but not the least, I &ould like to thank my "arents
& all my fello& trainees &ho have been aconstant source
of encoura#ement & ins"iration durin# my studies & have
al&ays "rovided mesu""ort in every &alk of life.PI-./H
+.)0RB.1E2H 34* -E0R EE21RI20 E4,I4EERI4,/R),P2$.2+456%INDEXCONTENT
PAGE NO.0ckno&led#ement77777777777777777777777777777..30bout
HERP7777777777777777777777777777777...8P a g e| 3Existin#
Electrical /cheme777777777777777777777777779:;Ratin# and
/"ecification of E!ui"ments77777777777777777777...:3:?@)eterin#
unit777777777777777777777777777....?@:?@2ircuit:breaker777777777777777777777777777..?8:?;0ir
Break
circuit:breaker777777777777777..................................?;:?=)inimum
5il 2ircuit:breaker77777777777777777777.......?=:3?Vacuum
2ircuit:breaker7777777777777777777777.......3?:3@2a"acitor
bank77777777777777777777777777.....3@:381 2ircuit
breaker..7777777777777777777777777..38:39*,
set777777...................................................................................................39:3;Pro"osed
Electrical /cheme777777777777777777777777773.=acresareaat
Varanasi&aslaidon3;th/e"tember?>=8.
6ithinashorts"anof3?months,"roduction activities &ere started
in the "lant from ?st 0"rilA?>=;. Havin# achieved
break:even"oint in the second year of its existence itself, HERP
"ro#ressed by lea"s & bounds. /tartin# as amanufacturer of
5&) s"ares for boiler auxiliaries, re"air activities took off
on firm footin# in?>>B &hen rebabbittin# of 1, set
bearin#s &as taken u". /ince then, rebabbitin# of
differentkinds of bearin#s includin# im"ort substitution
$42Bearin#s% as &ell as bearin#s
ofunconventionalsynchronouscondenserhavebeencarriedouttotheentiresatisfactionofthecustomers.HERP
Varanasihastakenu"variouscritical(obsfromnearby"o&er"lantsvi'CP
a g e| 441P21anda, .nchahar, .PRV.45bra, 0n"ara, Parichha and
hel"ed themto achievemaximum availability of their units.4o&
a"art from conventional s"ares of Bo&l )ills & boiler
auxiliaries, HERP is manufacturin#and su""lyin# turbine fasteners
for different "o&er "lants, turbine tools and tackles $re!uired
forerection and commissionin#D ma(or overhaul of turbines% for
various "o&er "ro(ects. 1his year,&e&ill
bemanufacturin#steamturbinestrainer assembly,
sealin#rin#s&small #overnin#assembly also,HISTORICAL
BACKGROND!"undati"n Da#$ %&.'(.)(*+Production 2ommencement C
B?.B8.?>=;0rea C 3>.=B 0cresP a g e| 5Break:Even -ear C
?>=> $as on @B.B8.3B??%0ccredition 1o C
I/5:>BB?:3BBB*urin#I/5 2ertification I/5:?8BB?3BB@ 5H/0/:?=BBP a
g e| 6EXISTING SCHEME !OR ELECTRICAL POWERDISTRIBTION IN BHEL
,ARANASI1he Existin# Electrical "o&er distribution scheme at
BHE V0R040/I is sho&n above. Eromthesubstationof
?@3D@@+V,@@+Vsu""lyistaken. 0fter takin#@@+Vsu""lyfromthesubstation
it is taken to )eterin# unit for the measurin# of "o&er
consum"tion and then to a @@+V V2B $vacuum circuit breaker%. 1his
V2B se"arates the &hole system from the main systemof the
"roduction "lant. 1hen after it is divided into t&o "arts, in
both circuits it is first taken to@@ +V V2B? and V2B3. 0nd then to
?)V0 1R04/E5R)ERFs, one transformer is air cooledand other is oil
cooled, after transformer it is taken to air circuit breakers
&hich are mechanicallyinterlocked &ith a key.1he
interlockin# is done for the "rotection "ur"ose, then it is
connected to the 1 main circuitbreaker and then fed to the
ca"acitor bank for the "o&er factor im"rovement. 0fter
ca"acitorP a g e| 7bank it is send to the 1 distribution "anel and
electrical "o&er is fed to the different loads of themachine
sho", administration buildin# "um" house e.t.c.Eor the
uninterru"ted "o&er su""ly in the "roduction "lant a 9BB +V0 *#
set is installed afterconnectin# throu#h a @ "ole air circuit
breaker. @ "ole air circuit breaker isolates the *, setcircuit from
the distribution "anel.Eor an effective "roduction "lant it is
necessary that "lant should have an effective distribution"lant. In
the existin# "lant oil cooled transformer is difficult to mana#e,
there are various "ointsthat should be check continuously in oil
cooled transformer, oil level leaka#e level e.t.c. 0s the"roduction
"lant is #ro&in# the need of "o&er is #ro&in# u" and
the system should be im"roved.RATING AND SPECI!ICATION O! THE
E-IPMENTSE-IPMENTS RATING AND SPECI!ICATION)E1ERI4, .4I1
/"ecification:?9D0D@@ +VD??B Vine 21RDP1R0ccuracy class
21:B.9s0ccuracy classP1:B.9s1R04/E5R)ER/ 5il cooled 1ransformer1y"e
of coolin#: 5.4.0.4Ere!: 9B HG.2ore and &indin#:?=BB +#.1otal
&ei#ht:8=BB +#.5il:?8BB itres.-ear:?>=;Ratin#: ?)V00ir
cooled 1ransformer1y"e of coolin#:0.4./tandard: I/ ???=96ei#ht:;BBB
+#.-ear:?>>B=98/tandard: I/ ?@??=DIE2 ;33
