GENERAL PRODUCT RANGE
Power Rating
 
Product Range, kVA:
150 to 20000
Typical Values, kVA:
150 300 500 1000 1500 2000 2500 3000 3750 5000 7500 10000 12000 15000 20000
Primary Voltage
 
Product Range, kV:
2.3 to 34.5
Typical Values, kV:
2.3 5.0 8.7 15.0 25.0 34.5
Secondary Voltage
 
Product Range, kV:
2.3 to 13000
Typical Values, V:
208 240 480 2400 4600 6900 12470 13200 13800
Impedence
5.5% to 7.5% as a function of the HV, LV, and BIL ratings
Standard Product Features
  • Both HV & LV windings vacuum cast in epoxy
  • Step-lap mitered cruciform core
  • 185 °C Cast epoxy insulation system
  • Vibration isolators protecting core & coil
  • UL listed

STANDARD PRODUCT SPECIFICATIONS AND AVAILABLE OPTIONS
Requirement Applicability of Requirement Design Value
Standard
Optional
Basic Impulse Levels, BIL Rated voltages for transformer winding: 1.2kV 10 kV 20, 30 kV
(specified as a function of transformer winding voltage) Rated voltages for transformer winding: 2.5kV 30 kV 45 kV
  Rated voltages for transformer winding: 2.5kV 60 kV 75 kV
  Rated voltages for transformer winding: 8.7kV 75 kV 95 kV
  Rated voltages for transformer winding: 15kV 95 kV 10 kV
  Rated voltages for transformer winding: 25kV 125 kV 150 kV
  Rated voltages for transformer winding: 34.5kV 150 kV 170 kV
Winding Temperature Rise, °C For all power ratings and voltage classes 80 °C 115 °C
Forced Air Rating Transformers rated 150-3750 kVA 133% 150%
  Transformers rated greater than 3750 kVA 133% 140%
Conductor Material For all power ratings and voltage classes Copper Aluminum
Maximum Operating Ambient Temperature Operating ambient temperature range -40 °C to 30 °C average, with specified maximum 40 °C max 50 °C max
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