MNG-ESMAŞ

SETIF-HODNA PIPELINE PROJECT

Doc No:TS-HV-TR-003

120 MVA 220/63/10.5 KV POWER TRANSFORMER BRIEF TECHNICAL SPECIFICATION

1.0        General Specification

1.01       The transformer shall be of 3 phase oil immersed with ONAN/ONAF cooling suitable for outdoor service as step down transformer. The ratings and other characteristics are as below:

1.02       Applicable Norm : IEC 60076

1.03       Ambient Temp: Max 55 deg C at elevation less than 1000 m.

1.04          Number of phases              3

1.05          Frequency                    50 Hz(±5%)

2.0  Nominal Data

Ratings			HV	MV	IMV	HVN	MVN
Power (MVA)			120	120	40
Voltage (kV)			220	63	10,5
Couplage			YNyn0d11
Lightening Shock Potential Bearing	Peak		1050	325	75	400	325
	Eff.
Maximum Operating Voltage (kV)			460	140	28	200	140
Applied Test Voltage (kV)			460	140	28	200	140
Apparent Short Circuit Power (MVA)			As per IEC	As per IEC	As per IEC
Short Circuit Current Duration (s)			2
Voltage Variation Category			CFVV (Constant Flux Variation Voltage) (*)
Load Regulation			YES
No-Load Regulation			NO
On Load Tapping Nr. of Steps x (%)		+	13x1,38%
		-	13x1,38%
Note (*)		Typical. It is not a must.

Description		kW	Tolerance (%)
No Load Loss, P0		60	15
Full Load Loss, Pk	HV/MV	290	15
Auxiliary Losses, Paux		12
Total Loss (P0+Pk)		350	10
Note:	These are typical values. Please provide your own values if different

4.0 Short Circuit Voltage

Between the Coils	Uk (%)	Tolerance (%)	Power (MVA)	Regulaiton Position
HV/MV				+
	12	±10	120	0
				-
HV/IMV	7.33	±10	40	0
MV/IMV	2.67	±10	40	0

5.0 Temperatures and Cooling

Maximum Oil Temperature             45K

Maximum  Winding Temperature  55K

Hot Spot Temperature Value           65K

6.0 Sound Levels-Standard IEC 551

	Acoustic Pressure (dB)	Acoustic Power	Distance (m)
ONAN	75		0,3
ONAF	80		2,0
Note	At Nominal Voltage

7.0 Circuit Bushings

		HV	MV	IMV	HV-N	MV-N
Type		Capacitor	Capacitor	Solid	Capacitor	Capacitor
Assigned Voltage (kV)		245	72,5	12	126	72,5
Assigned Current (A)		630	1250	3150	630	1250
Lightening Test Voltage (kV)		1050	325	75	400	325
Maximum Ind.Frequency Test Voltage (kV)		460	140	28	200	140
Number of Bushings		3	3	3	1	1
Creepage Distance
	(mm/kV)	31	31	31	31	31

Note: The data marked with red color differ from the requirement, and is proposed by the Manufacturer.