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/NERAL DIRECTORATE OF ELECTRICITY/RODUCTION (GCEP)

BAGHDAD/ JUMOURIYA ST" I BI,D. 166P.O. BOX: 1058FAX: 7634790

Power Transformers For Samarra Hydro Power Station

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POWER STATION: Samara Dam Power Station rl;nL .ur eL.;45 i-L-^ : i-U.^ttTITLE: &Ji dJj,:-03 ir-Sll d3'u ',,,1L11

OUR REFERENCE : 6016 '1 .,l1',!,lLll JJ

No Specification Unit 0t1- I. Unit Transformer

Three phase unit transformer type OTE/FA 56127139 MARELI-ITALYCapacity : 33 MVA , 3 phase, 50 tIZPrimary Voltage : I 1000 VPrimary Current: 1730 ANo-Load secondary voltage :132000+ -3x2.5%oSecondary Current : 144 Almpedance : 10.17 %o

Short circuit p.f : 0.044Vector Group : YdlTap changer : OFF load tap changer 7 posType of cooling: ONAF (fans manual - automatic operation ) ".... 50 c/sAmbient temperature : (0 , 55 'C ) accerting the IPAControl voltage : 220 YDCAll dimensions shown in the attach drawing (4.C. gSg6A ) & (4.A" 2050 )

No

2- II. Station TransformerThree Phase Station'IransformerCapaciry: 15 MVA,3 phase, 50HZPrimary Voltage : 132 KVSecondary Voltage : I 1"55 KVTap Changer : On Load Tap Changer 1-17IMPEDANCE:9.17o/oType of cooling:ONAN".....50 c/sAmbient temperature : (0 , 55'C )Control voltage : 220 YDC.This transformer must work in parallel with the other transformer, the othertransformer have the following specification :

Three phase station transformer fype OTE 47126141 MARELI-ITALYCapacity :2217115 NA/A , 3 phase, 50 HZWinding HV: 22000I(VA 132 KV 96.3A YND1D1 vector groupWinding MV: 7000 KVA 34.65 KV 1l7A YDlWindingLV: 15000KVA 11"55 KV 750A DDO

EV:!4Y HV-LV MV-LVImpedance : 9.5o/o 9.17% 21 .25%Short Circuit p.f : 0.104 0.055 0.053Note :

The MV output practically unused, therefore the MV not required in the new transformer.All dimensions shown in the attach drawing ( 4.8.6015C ) & (4.A.1283.8" )

No I

COMPUTER / ZINA JANAN

y' ;nsformers Dimensions

.;.ir:-.:ii:,1t.:, i " .... ',,,,';,:,..i,;;,:l ,, ,. ,:ft ,',., ,

Height of transformer

Length of transformer4500 mm

Width of transformer

HV bushing side( from center to center ) 1675 mm 1675 mm

LV Bushing side( from center to center ) 3.50 mm

Distance between wheels (1435 rail gauge ) l5 l0 mm 1510 mm

Notes :-

1-1

aJ-

The transforTners must be supply with oil .

Transformers anci there's sufficilnt oil shourd be from European origin .Recommended spare parts for 3 years for each transformers to be the following items including :

4- Attend four engineers to examine the transforrners in the country of origin .5- The new transformers should be replaced instead of old one without any changing in the foundationor electrical connection of transfo.*.., "

I

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Buchholz gas collecting chamber

Buchholz surge collecting chamber

oil temperature gauge

Butterfly valve

LV bushing

Neutral point Bushing

Gaskets + Rubber seals

cooling fans

COMPUTER I ZINA JAN