หม้อแปลงไฟฟ้าขนาด 400 kVA



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BANGKOK PATTANA TRANSFORMER CO.,LTD.

TRANSFORMER SPECIFICATION



TECHNICAL DATA
RATING

Capacity kVA

Phase

Hz

System Voltage

Vector Group

Tapping off circuit tap changer

Primary (V)

Secondary (V)

400

3

50

22000

400/230

Dyn11

±2x2.5%

 

Type of transformer

Oil Immersed ( Hermetically Sealed )

Cooling system

ONAN

Standard

IEC 60076

Installation on

Platform / Concrete Foundation

 

IMPEDANCE VOLTAGE & NO LOAD CURRENT

% Impedance voltage at 75°C & tolerance

4.0 ± 10%

% No load current & tolerance

1.13 &+30%

 

EFFICIENCY

%EFFICIENCY AT P.F.= 1

25% Rated power

50% Rated power

75% Rated power

100% Rated power

98.83

98.99

98.85

98.64

 

VOLTAGE REGULATION

VOLTAGE REGULATION AT 100% LOAD

AT P.F.= 0.8

AT P.F.= 0.9

AT P.F.= 1.0

3.25

2.75

1.22

 

 

 

 

 

 

QF-EN-04 (Rev.00)


บริษัท บางกอกพัฒนา หม้อแปลงไฟฟ้า จำกัด
BANGKOK PATTANA TRANSFORMER CO.,LTD.

TRANSFORMER SPECIFICATION

 

TEMPERATURE RISE

Maximum ambient temperature (°C) 40

40

Average temperature rise of winding (°C) 65

65

Average temperature rise of top oil (°C)

60

 

WINDING

WINDING

Primary

Secondary

Material

copper

copper

Full wave impulse withstand voltage (BIL) (kV)

125

30

Power frequency test voltage, 1 min (kV)

50

3

 

BUSHING

BUSHING

Primary

Secondary

Applied standard

DIN 42531

DIN 42530

Rated current (A)

250

630

Full wave impulse withstand voltage (BIL) (kV)

125

30

Stud size, Metric (Ømm.)

12

20

 

TERMINAL ARRANGEMENT

TERMINAL ARRANGEMENT

Primary

Secondary

Terminal conductor (sq.mm.)

35-95

120-240

Diameter (Ømm.)

7.5-12.6

12.9-20.2

Number of circuit

1

4

Conductors type

cable

cable


OIL

Type of oil

mineral oil

Oil dielectric strength (kV)

35

 

 

Insulation resistance test by 2500 Vdc MEGGER

Pri-Sec

Pri-E

Sec-E

(Megohm)

1000

1000

1000

QF-EN-04 (Rev.00)

 



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