Dear,
I have one UPS with 160kva (IGBT 12 PWM) along with DC capacitors parallelley connected to DC bus bar with IGBT section.
when, i switched ON the rectifier, some capacitors have shorted (blown out) ,I/P 400Vac(5%),O/P-400vac(3%),Battery voltage 380vdc.
What may be the
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