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12~ 40.5kv high volt bushing series
12~ 40.5kv high volt bushing series

the 1st item:product model and meaning

The 2nd item:execution norm

GB311.1 《insulation coordination of high volt electric transmission and transformation equipment》
GB/T7354 《partial discharge measuring》
DL/T593 《share technical demand of high-volt switching equipment and control equipment》
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