33kv/11kv 15mva Three Phase Two Winding Power Transformer

ITEM

DESCRIPTION

UNIT

REQUIRED

GAURANTEED

1.

Manufacturer

HEMG

2.

Country of manufacture

CHINA

3.

Type of transformer

Three Phase Step Down Power Transformer

Three Phase Step Down Power Transformer

4.

Standard and tolerances

IEC 60076

IEC 60076

5.

Installation

Outdoor

Outdoor

6.

Insulation fluid

Mineral oil (type NYNAS 10 GBX)

Mineral oil (type NYNAS 10 GBX)

7.

Type of preservation

Conservator with air breather

Conservator with air breather

8.

Type of cooling

ONAN

ONAN

9.

Type of core (shell type/core type)

Core Type

Core Type

10.

Rated power (ONAN/ONAF)

MVA

15

15

11.

Rated voltages at no-load - HV side - LV side

kV kV

33 / 11

33 / 11

12.

Rated frequency

Hz

50

50

13.

Type of tap changer on HV side

On-load (ABB type UZ)

On-load (ABB type UZ)

14.

Type of regulation

CFR

CFR

15.

Number of taps

17 (+,-8 x 1.25%)

17 (+,-8 x 1.25%)

16.

Vector group

YD1

YD1

17.

Temperature rise: - Top oil - Windings - Hot spot

K K K

45 55 68

45 55 68

18.

Impedance voltage

%

10% at 15MVA, 33/11kV base

10% at 15MVA, 33/11kV base

19.

No load loss at rated voltage

KW

13

13

20.

Load loss at nominal tap

KW

76

76

21.

Auxiliary loss

KW

N/A

N/A

22.

Flux density at nominal tap

T

<1.72

<1.72

23.

No load current at nominal tap

%

0.22

0.22

24.

Lightning Impulse test voltage - Full wave (peak) (Acc. To IEC 60076-3) - HV winding - HV Neutral - LV winding

kVp kVp kVp

650 - 170

650 - 170

25.

Short-duration induced AC withstand voltage - HV - LV

kV

70, 22

70, 22

26.

Separate source AC withstand voltage test, (Acc. to IEC 60076-3) - HV winding - LV winding

kV

38 70

38 70

27.

Sound Pressure level (ONAN/ONAF)

dB

62

62

28

Overload/Fault current capability

kA

Accr. to IEC 354

Accr. to IEC 354

29.

Basic Insulation level

M

LI 650 AC 170 / 75 (Phase)

LI 650 AC 170 / 75 (Phase)

30.

Short Circuit Impedances: Lowest tap Highest tap

/phase

/phase

After Placement of Order

After Placement of Order

31.

Physical Dimensions

W x L x H

4650*3700*4000MM

32.

Total Quantity of Oil required

kg

8650KG

33.

Filling Medium of Tank for shipment If oil, state the quantity required

Ltrs

Transformer will be shipped with oil

34.

Total capacity of conservator

Ltrs

35.

Total weight of Transformer

kg

32500KG