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  • Users: engineermc
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  1. engineermc

    Sealed leadacid UPS battery testing/conditioning

    TO RECOVER DEAD BATTERY, I HAVE USE TWO TECH. 1. CHARGE BY BENCH DC POWER SUPPLY AT 15 V CURRENT 10-15 % OF AH CAPACITY UNDER CVCC MODE.KEEP FOR SIX HOURS, WHEN IT STOPS TAKING CURRENT. NOW DISCHARGE IT USING 12 OHM / 20 WATT WIRE WOUND RESISTANCE, UP TO THE VOLTAGE LEVEL GOES 7.5V REPEAT...
  2. engineermc

    UPS sizing for HID lighting load

    YOU ARE FACING A HARD TROUBLE THERE IS TWO/THREE SOLUTION TO THIS PROBLEM. 1. INCREASING CAPACITY OF UPS. WHICH IS NOT A GOOD SOLUTION A COSTLY APPROCH. 2. GET UPS SYSTEM WITH STATIC BY PASS HAVING AUTO BY- DIRECTIONAL TRANSFER, IF OVER LOAD IS SENSE LET LOAD BE TRANSFER TO BY PASS D.G. SUPPLY/...
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