IEC/ANSI Standards Cast Resin Dry Type Power Distribution Transformer
Service condition | |
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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
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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
K-factor 3, 5, 7, 9, 11, 13, 15, 17
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Standard code IEC 60076-11 Power transformers-Part 11: Dry-type transformers IEEE C57.12.01 General Requirements for Dry-Type Distribution and Power Transformers Including Those with Solid-Cast and/or Resin Encapsulated Windings
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Ratings | |
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IEC
Rated Frequency 50Hz, 60Hz Rated Voltage 3.6 kV – 7.2 kV – 12 kV – 17.5 kV – 24 kV – 36 kV Rated Insulation Level 20kV – 40kV – 60kV – 75kV – 95kV – 125kV – 145kV – 170kV Rated KVA 30kVA – 50kVA – 80kVA – 100kVA – 125kVA – 160kVA – 200kVA – 250kVA – 315kVA – 400kVA – 500kVA – 630kVA – 800kVA – 1000kVA – 1250kVA – 1600kVA – 2000kVA – 2500kVA – 3150kVA
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IEEE
Rated Frequency 60Hz Rated Voltage 2.5kV – 5.0kV – 8.7kV – 15.0kV – 25kV – 34.5kV Rated Basic Impulse level 30kV – 45kV – 60kV – 75kV- 95kV – 110kV – 150kV – 200kV 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 |
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