last update: Mar. 8 2013
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The Substation Transformer is designed for commercial and industrial applications to convert distribution voltages to utilization voltages. They are constructed to interconnect easily with both primary and secondary switchgear. They can be used in outdoor or indoor (when filled with R-Temp or Envirotemp FR3 fluid) load center substations.
Standard Ratings
Three Phase 500, 750, 1000, 1500, 2000, 2500, 3000, 3500, 4000, 5000, 6000 & 7500 KVA
Standard Cooling OA/NA,
Standard Winding Temperature Rise 65˚C
Standard High-voltage & insulation level (BIL)
13200 V BIL: 95KV
13800 V BIL: 95KV
14400 V BIL: 95KV
23900GrdY/13800 V BIL: 125KV
24940GrdY/14400 V BIL: 125KV
34500GrdY/19920 V BIL: 150KV
34500 V BIL: 200KV
Standard de-energized before operating tap changer
Two - 2½% taps above and below rated voltage
Standard secondary voltage & insulation level (BIL)
The basic insulation level (BIL) of the secondary voltage shall be 30 kV.
480Y/277 V
400Y/231 V
208Y/120 V
240D V
480D V
600Y/347 V
600D V
OTHER VOLTAGES UNDER 1000V
Standard Impedance Voltage (%)
150KVA~400KVA 3.0% ~ 4.0%
400KVA~750KVA 3.5% ~ 5.0%
750KVA~1500KVA 4.0% ~ 5.75%
1500KVA~2500KVA 5.0% ~ 6.0%
upper 2500KVA 5.5% ~ 7.5%
Standard Sound Level (Average) decibels
150KVA~400KVA 56 db
400KVA~750KVA 58 db
750KVA~1500KVA 60 db
1500KVA~2500KVA 62 db
Accessories: Any additional accessories will be specified on the inquiry
Externally operated off- load tap changer
Pressure relief valve
Drain valve with sampler on top and bottom
Liquid level gauge
Oil temperature gauge
Ground pad and clamp with grounding
Stainless Diagrammatic name plate
Jacking Pad.