Actually, the thing is vacuum has high arc quenching property compare to air because in VCB, the die electric strengths equal to 8 times of air. That y always vacuum used as in HT breaker and air used as in LT.
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A Static Transfer Switch (STS) utilizes a static electronic component (SCR), which permits a transfer in less than four milliseconds (1/4 o...
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IP Code, or Ingress Protection Code[1], IEC standard 60529, sometimes interpreted as International Protection Code, classifies and rates th... -
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