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Corrugated/Hermetically sealed Transformers
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Corrugated Transformers
In hermetically sealed transformers, pressure variation due to oil expansion is absorbed by the flexible corrugated steel tank.
Range
16kVA to 2500kVA
Voltage
33kV; 22kV; 11kV; 6.6kV; 3.3kV; 0.433kV
Vector Group
As per IS: 2026 (part 4)
Class of insulation
Class A
Cooling
ONAN
Type
On load tap changer/off load tap changer
Frequency
50 HZ
Applicable standard
IS: 2026/IS: 1180/IS: 335/IS: 2066/IS: 3347 OR IEC: 60076