Service condition

Normal Condition

Ambient temperature

Indoor

-5°C to +40°C

Outdoor

-10°C to +40°C

Humidity

90%

Altitude

≤1000m

Pollution

Level I-Light

Level II-Medium

Earthquake

UBC Zone 3

Special Condition

Ambient temperature

Indoor

-15°C to +40°C, -25°C to +40°C

Outdoor

-10°C to +50°C, -25°C to +40°C

-40°C to +40°C

Humidity

95%,98%

Altitude

≤2000m, ≤3000m, ≤4000m

Pollution

Level III-Heavy, Level IV-Very Heavy

Earthquake

UBC Zone 4

Standard

IEC 60076-1 Power transformers-Part 1: General

IEC 60076-2 Power transformers-Part 2: Temperature rise

IEC 60076-3 Power transformers-Part 3: Insulation levels, dielectric tests and external clearances in air

IEC 60076-4 Power transformers-Part 4: Guide to the lightning impulse and switching impulse testing

IEC 60076-5 Power transformers-Part 5: Ability to withstand short circuit

IEC 60076-10 Power transformers-Part 10: Determination of sound levels

IEC 60076-11 Power transformers-Part 11: Dry-type transformers

IEEE C57.12.00 General Requirements for Liquid-Immersed Distribution Power, and Regulating Transformers

IEEE C57.12.01 General Requirements for Dry-Type Distribution and Power Transformers Including Those with Solid-Cast and/or Resin Encapsulated Windings

Ratings

IEC Standard

Rated Voltage:

3.6 kV – 7.2 kV – 12 kV – 17.5 kV – 24 kV – 36 kV – 52 kV – 72.5 kV – 100 kV – 123 kV – 145 kV − 170 kV – 245 kV

Rated Insulation Level:

Common Value:

20kV – 40kV – 60kV – 75kV – 95kV – 125kV – 145kV – 170kV – 250kV – 325kV – 380kV – 450kV – 550kV – 650kV – 750kV – 850kV – 950kV – 1050kV

Across the isolating distance:

23kV – 46kV – 70kV – 85kV – 110kV – 145kV – 165kV – 195kV – 290kV – 375kV – 440kV – 520kV – 630kV – 750kV – 860kV – 950kV – 1050kV – 1200kV

Rated Frequency:

50Hz, 60Hz

Rated normal current:

1A – 1.25A – 1.6A – 2A – 2.5A – 3.15A – 4A – 5A – 6.3A – 8A – 10A – 12.5A – 16A – 20A – 25A – 31.5A – 40A- 50A – 63A – 80A – 100A – 125A – 160A – 200A – 250A – 315A– 400A – 500A – 630A – 800A – 1000A – 1250A – 1600A – 2000A – 2500A – 3150A – 4000A – 5000A – 6300A

Rated kVA

30kVA – 50kVA – 80kVA – 100kVA – 125kVA – 160kVA – 200kVA – 250kVA – 315kVA – 400kVA – 500kVA – 630kVA – 800kVA – 1000kVA – 1250kVA – 1600kVA – 2000kVA – 2500kVA – 3150kVA – 4000kVA – 5MVA – 6.3MVA – 8MVA – 10MVA – 12.5MVA – 16MVA – 20MVA

IEEE Standard

Rated KVA

Single-phase transformer:

5kVA – 10kVA – 15kVA – 25kVA – 37.5kVA – 50kVA – 75kVA – 100kVA – 167kVA – 250kVA – 333kVA

Three-phase transformer:

15kVA – 30kVA – 45kVA – 75kVA – 112.5kVA – 150kVA – 225kVA – 300kVA – 500kVA – 750kVA – 1000kVA – 1500kVA – 2000kVA – 2500kVA – 3750kVA – 5MVA – 7.5MVA –10MkVA – 12MVA – 15MVA – 20MVA – 25MVA – 30MVA – 37.5MVA

Rated Voltage

1.2kV – 2.5kV – 5.0kV – 8.7kV – 15.0kV – 25kV – 34.5kV – 46.0kV – 69.0kV – 115.0kV – 138.0kV – 161kV – 230.0kV – 345kV

BIL

30kV – 45kV – 60kV – 75kV- 95kV – 110kV – 150kV – 200kV – 250kV – 350kV – 450kV – 550kV – 650kV – 750kV – 825kV – 900kV – 1050kV – 1175kV