Phase to phase clearance should be around 11.5 inches.
BIL
Basic Impulse Level...
Basic Impulse Level...
B.I.L. stands for Basic Impulse Level for the transformer. It should be on the faceplate of the transformer.
BIL stands for Basic Impulse Level, it is the impulse voltage or power ( in the case of testing a transformer) or surge voltage in the case of lightning or switching, that a transformer or any other electric device is able to with stand. It refers to maximum voltage a device can with stand with out insulation breakdown which leads to a short circuit.
Please refer Chapter 1, Page 2 of "Insulation coordination for power systems" by Andrew R. Hileman that gives a good description of the term BIL and BSL (Basic Switching Impulse Withstand Voltage).
The BIL (Basic Insulation Level) of a 34.5 kV transformer typically ranges from 95 kV to 150 kV, depending on the specific design and application requirements. The BIL represents the highest voltage that the insulation can withstand for a short duration, ensuring protection against transient overvoltages. This level is critical for ensuring the reliability and safety of the transformer under fault conditions. Always refer to manufacturer specifications for precise BIL values.
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Bil Dwyer was born on March 30, 1962.
Bil Dwyer was born on March 30, 1962.
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