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WE are using a 63A MCCB(SIEMENS MAKE) for one of the feeder in LV substation panel.It is supplying to a lighting & power socket DB.Settings in the MCCB is Ir = 63 * 1 , Isd = 8 times of Ir , tsd = 0.5 sec( I2 t off). Sometimes this MCCB is tripping .But no trip in DB MCB. Can anybody tell me reason ? From where i can know about the MCCB settings?
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Bhel, Hyundai, Orchid Chemicals and Pharmaceuticals, PDO, Prefamac,
7 58967Why PT voltages are measured with respect to ground? What do u mean by voltage or current polarized.
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difference between high and low impedance BUS BAR relay??
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IN MY SYSTEM THERE IS ONLY OVER CURRENT EARTH FAULT RELAY IS AVAILABLE. FOR THE UNBALANCE SENSING IS THERE ANY RELAY IS AVAILABLE? THE SAME CTs WHICH ARE USED FOR THE OVER CURRENT EARTH FAULT RELAY CAN USE FOR UNBALANCE ALSO?
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Sir pl provide 5 year sample paper for post junior engineer(electrical).I have currently applied for junior engineer (electrical) on RRB Ajmer
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What Normal(Tangent) towers and Tension(Cut-point) Towers?
what should be the ideal gauge of wire (In sq mm) for different loads in Ampere?
why h parameter are called as hybrid parameter?
