25MVA Solar Transformer-Bihar 25MW PDF
25MVA Solar Transformer-Bihar 25MW PDF
25MVA Solar Transformer-Bihar 25MW PDF
132/33 KV Transformer
2 5 ( 1 5+ 1 0 ) MW B i h a r S ola r P o w e r
P r oj e c t
5.
Nos
6.
Nos
7.
MOG
Nos
8.
Nos
9.
Nos
10.
Aircell
Nos
Nos
12.
Nos
13.
WTI
Nos
11.
17.00.00
Description
UOM
Quantity
Nos.
Mandays
Nos
01
Nos
Nos
01
01
ANNEXURE-A
GENERAL TECHNICAL PARTICULARS
(To be filled separately for each transformer)
Sl.No.
Particulars
Datatobefilledbybidder(B)
1. Make
2. Type
3. Numberofwindingsperphase
4. ReferenceStandard
5. Rating
a. Typeofcooling
b.
Ratedoutput(MVA)
W R E GB 0 - WEL- 6 2 5 - TSP - 01 0 0 -R 1
P a g e 26 o f 5 3
T e c h n i c al S p e c i f i ca t i o n f o r 2 5 MVA
132/33 KV Transformer
1) WithONANcooling
c.
d.
e.
f.
g.
h.
a.
b.
RatedVoltage(KV)
2)
HV
3)
LV
RatedCurrent(A)
4)
HV
5)
LV
RatedFrequency(Hz)
VectorGroupafter3phase
connection
VoltageWithstandTime
110%ofratedvoltage
125%ofratedvoltage
140%ofratedvoltage
OverfluxingCapability
ForOverfluxingFactor1.10
ForOverfluxingFactor1.25
ForOverfluxingFactor1.40
ForOverfluxingFactor1.50
6. Temperature
Reference(Ambient
Temperature)
Temperatureriseover
reference
ambientDeg.C
Oftopoilbythermometer
Ofwindingbyresistance
d.
Maximumcontinuousover
loading
capacityoftransformerwithout
exceedingthespecified
winding
temperature
Thermaltimeconstant
e.
Hotspottemperature
Oiltemperatureatcoolerinlet
atratedload&atmaximum
ambienttemperature
Oiltemperatureatcooler
outletatratedload&at
maximumambient
temperature
c.
f.
g.
W R E GB 0 - WEL- 6 2 5 - TSP - 01 0 0 -R 1
2 5 ( 1 5+ 1 0 ) MW B i h a r S ola r P o w e r
P r oj e c t
P a g e 27 o f 5 3
T e c h n i c al S p e c i f i ca t i o n f o r 2 5 MVA
132/33 KV Transformer
7. Tapping
a. Type
Capacity
d.
RangeStepsX%Variation
TapsprovidedonHVwinding
Yes/No
e.
Voltageclassandcurrent
f.
Stepvoltage
g.
Ratedshortckt.current
a)Dynamic
b)Thermal
TotalquantityofoilinOLTC
Noofrevolutionstocomplete
onestep
Insulationlevelofthe
connectingleadsbetweentap
changerandtransformer
winding
ImpedancesatPrincipalTapat
RatedFrequencyand75C
windingtemperature
ImpedancesatLowestTap
ImpedancesatHighestTap
Toleranceforimpedance1%
betweenallsinglephaseunits
ResistanceofHV&LVwinding
b.
c.
h.
i.
j.
k.
Zerosequenceimpedanceof
HV&
LVwinding
SuitableforOutdoor
8.
continuousservice
BasicinsulationlevelHV
winding
Lightningimpulsewithstand
voltage
BasicinsulationlevelLV
9.
winding
Oneminutepowerfrequency
withstand
voltage
Lightningimpulsewithstand
voltage
BasicinsulationlevelHV&LV
10.
neutral
2 5 ( 1 5+ 1 0 ) MW B i h a r S ola r P o w e r
P r oj e c t
W R E GB 0 - WEL- 6 2 5 - TSP - 01 0 0 -R 1
YES/NO
Starconnection
P a g e 28 o f 5 3
T e c h n i c al S p e c i f i ca t i o n f o r 2 5 MVA
132/33 KV Transformer
Oneminutepowerfrequency
withstand
voltage
Lightningimpulsewithstand
voltage
11. HVbushingmake&type
HVbushingratedcurrentin
Amp
Ratedthermalshorttime
current
HVbushingratedvoltage
2 5 ( 1 5+ 1 0 ) MW B i h a r S ola r P o w e r
P r oj e c t
HVbushing1minutepower
frequencywithstandvoltage
HVbushinglightningimpulse
withstandvoltage
HVbushingminimumcreepage
distanceinmm
HVbushingmaximumtandelta
value
Minimumwithstandvalueof
cantilever
loadonbushing
12. LVbushingmake&type
Ratedthermalshorttime
current
LVbushingratedvoltage
LVbushing1minutepower
frequencywithstandvoltage
LVbushinglightningimpulse
withstandvoltage
LVbushingminimumcreepage
distanceinmm
LVbushingmaximumtandelta
value
Minimumwithstandvalueof
cantilever
loadonbushing
13. HV(N)bushingmake&type
HV(N)bushingratedcurrentin
Amp
Ratedthermalshorttime
current
HV(N)bushingratedvoltage
LVbushingratedcurrent
HV(N)bushing1minutepower
frequencywithstandvoltage
HV(N)bushinglightning
impulse
W R E GB 0 - WEL- 6 2 5 - TSP - 01 0 0 -R 1
P a g e 29 o f 5 3
T e c h n i c al S p e c i f i ca t i o n f o r 2 5 MVA
132/33 KV Transformer
2 5 ( 1 5+ 1 0 ) MW B i h a r S ola r P o w e r
P r oj e c t
withstandvoltage
HV(N)bushingminimum
creepage
distanceinmm
HV(N)bushingmaximumtan
deltavalue
Minimumwithstandvalueof
cantilever
loadonHV(N)bushing
14. LV(N)bushingmake&type
15.
16.
17.
18.
19.
LV(N)bushingratedcurrentin
Amp
Ratedthermalshorttime
current
LV(N)bushingratedvoltage
LV(N)bushing1minutepower
frequencywithstandvoltage
LV(N)bushinglightning
impulse
withstandvoltage
LV(N)bushingminimum
creepage
distanceinmm
LV(N)bushingmaximumtan
deltavalue
Minimumwithstandvalueof
cantilever
loadonLV(N)bushing
TransformerHVterminals
suitablefor
connectiontoisolatedphase
busduct
HVterminalclearancephaseto
phase
HVterminalclearancephaseto
earth
LV terminal clearance phase to
phase
LV terminal clearance phase to
earth
Maximumcurrentdensity(Amp
/sqmm)
Transformer no load loss at
rated
voltage,frequency&at75C
Transformer load loss at rated
current,
voltage,frequency&at75C
Transformer stray loss @ 75
degC
W R E GB 0 - WEL- 6 2 5 - TSP - 01 0 0 -R 1
P a g e 30 o f 5 3
T e c h n i c al S p e c i f i ca t i o n f o r 2 5 MVA
132/33 KV Transformer
2 5 ( 1 5+ 1 0 ) MW B i h a r S ola r P o w e r
P r oj e c t
Maximumefficiency
Load&powerfactoratwhichit
occurs
21. Marshallingbox
Enclosure ingress protection
class
Panelsheetthickness
WeightofMBpanel
22. Tankconventionaltype
Thicknessofsteelplateused
CoreArea
CoreDia
Windowheight
Coreweight
24. TypeofWindingHV
ConductormaterialCuorAl
Noofturnsatmaxtap
Noofturnsatmintap
Conductorsize
Conductorarea
Currentdensity
Internaldiaofwinding
W R E GB 0 - WEL- 6 2 5 - TSP - 01 0 0 -R 1
P a g e 31 o f 5 3
T e c h n i c al S p e c i f i ca t i o n f o r 2 5 MVA
132/33 KV Transformer
WindingOD
Ductdetails
Barecopperweight
HVresistance
HVloss
Insulatingmaterial
2 5 ( 1 5+ 1 0 ) MW B i h a r S ola r P o w e r
P r oj e c t
InsulatingmaterialthicknessHV
Turn
25. TypeofWindingLV
ConductormaterialCuorAl
Noofturns
Nooflayers
Turns/layer
Conductorsize
Conductorarea
Currentdensity
Internaldiaofwinding
Windingradialdimension
WindingOD
Noofducts&gap
Barecopperweight
LVresistance
LVloss
Insulatingmaterial
InsulatingmaterialthicknessLV
Turn
Insulating
oil
as
per YES/NO
26.
specification
Quantityofoilinmaintank
Quantityofoilinconservator
Totalquantityofoil
10%excessoilfurnished?
YES/NO
ReferenceStandard
CTRatio
Burden,VA
ClassofAccuracy
27.
W R E GB 0 - WEL- 6 2 5 - TSP - 01 0 0 -R 1
P a g e 32 o f 5 3
T e c h n i c al S p e c i f i ca t i o n f o r 2 5 MVA
132/33 KV Transformer
2 5 ( 1 5+ 1 0 ) MW B i h a r S ola r P o w e r
P r oj e c t
setto
rupture
29. BuchholzRelaymake
30. SuddenPressureRelaymake
28.
31. OTImake
32. WTImake
33. MagneticOillevelGaugemake
FittingsAccessoriesasgivenin
specification (Bidder shall
attach
34.
separate sheet giving details,
make
andbillofmaterials)
Painting for external surface
35. shade&
thicknessinmicron
Painting for internal surface
shade&
thicknessinmicron
Transformeroveralldimensions
36.
LengthxWidthxHeight
Transformer MB/CCC panel
dimensions
LengthxWidthxHeight
37. Transformertotalweight
Tankweight
Coreweight
Windingweight
Framepartsweight
Totalweightofoil
Weightofcellulose
Weight
of
pressboard
(spacer,barrieretc)
Short time withstand current
capacity for external short ckt.
38.
Between 3ph terminal and
phasetoearth
NCTdetail
CT
39.
W R E GB 0 - WEL- 6 2 5 - TSP - 01 0 0 -R 1
T e c h n i c al S p e c i f i ca t i o n f o r 2 5 MVA
132/33 KV Transformer
HV
NCT
1
HV
NCT
2
LV
NCT
1
LV
NCT
2
40. Noiselevel
2 5 ( 1 5+ 1 0 ) MW B i h a r S ola r P o w e r
P r oj e c t
41. Coolingequipmentdetail
a)Noofcoolersandratingas%
oftransformercoolingequip.
b)Mounting
c)Fanmotordata
Nopercoolingequipment
Speed
Lockedrotorcurrent
d)Radiatorthickness
42. a)Typeofpreservation
43.
44.
45.
46.
47.
48.
49.
50.
b)Materialofaircell
c)Continuous
temperature
withstand
Air core reactance of HV
winding
Allinprocesstestsconfirmedas
perspecification/qualityplan?
PerformingallTypeTestsasper
specificationincludedinoffer?
Performing all Routine Tests as
per specification included in
offer?
All Special Tests confirmed as
perspecification?
Alldocumentssubmittedasper
specification?
Reference list of clients for
supply of similar rating of
transformerenclosed?
Deviationsheetsubmittedwith
reference to specification
clause?
YES/NO
YES/NO
YES/NO
YES/NO
YES/NO
YES/NO
YES/NO
P a g e 34 o f 5 3
T e c h n i c al S p e c i f i ca t i o n f o r 2 5 MVA
132/33 KV Transformer
2 5 ( 1 5+ 1 0 ) MW B i h a r S ola r P o w e r
P r oj e c t
1) Bidder to fill up only column (B) and shall not change description in column (A)
2) Bidder to submit GTP with data in numerical values wherever asked.
3) Bidder shall not use words like Adequate, As per standard, Later, After award etc.
This will be considered as deviation.
Stamp / seal of bidder ----------------------------
W R E GB 0 - WEL- 6 2 5 - TSP - 01 0 0 -R 1
P a g e 35 o f 5 3