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  1. jing09

    PROS AND CONS OF OPEN WYE/OPEN DELTA TRANSFORMER BANKS

    Normal Voltage A to B 230 Volts dropping to 108.26 Volts for .267 seconds at 3:22:10.477 o-clock AM JULY 03,2018 Normal Voltage A to B 230 Volts dropping to 202.06 Volts for .008 seconds at 3:55:29.083 o-clock AM JULY 06,2018 Normal Voltage C to A 230 Volts dropping to 108.63 Volts for .267...
  2. jing09

    PROS AND CONS OF OPEN WYE/OPEN DELTA TRANSFORMER BANKS

    @Itsmoked; the establishment I put the PQA suffered losses, lots of their air conditioning unit broke specially the ic chips of those can you suggest any possible solution?
  3. jing09

    PROS AND CONS OF OPEN WYE/OPEN DELTA TRANSFORMER BANKS

    can you elaborate? @ waross
  4. jing09

    PROS AND CONS OF OPEN WYE/OPEN DELTA TRANSFORMER BANKS

    230 voltage is the normal voltage phase 12 108.26 volts .267 secs phase 12 202.06 volts .008 secs phase 31 108.63 volts .267 secs phase 31 108.07 volts .267 secs phase 31 196.62 volts .008 secs
  5. jing09

    PROS AND CONS OF OPEN WYE/OPEN DELTA TRANSFORMER BANKS

    I VISIT A SITE RECENTLY AND INSTALLED A POWER QUALITY ANALYZER. TO MY SURPRISED THE RECORDED DATA IN THE INSTRUMENT SHOWED A VOLTAGE SAG. IT OCCURS 5 TIMES, ALL HAPPENED AT DAWN. NOW MY QUESTION IS HOW DOES THIS VOLTAGE SAG HAPPENED WHEN IT IS DAWN AND NO BUSINESS ESTABLISHMENT WAS OPEN? IS THIS...

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