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In an ACB shunt trip coil and undervoltage coil operated normally( breaker open and charged). But closing coil not operating untill manually discharge and recharging. Any help.
PPIL,
1712If I have Energy Meter Ratio as 100:5 & Also I have CT Ratio as 50:5 then what will be my multiplying Factor(M.F.)
1937i am completed diploma in ece,and working in ht and lt lines.so is elligible diploma in ece for get electrical C Licence?plse give ur opinion?
1858if main CT is of ratio 50/5, and meter CT is -/5 what will be overall multiplying factor of meter.PT is 11000/110 .
BSNL,
1624what is difference between speed mode and torque mode in motor?? explain in simple words please.
1560If more than rated DC voltage appears across trip coil of the breaker, what will happen? e.g. in 110V DC circuit system, if voltage across battery terminal showing 121 V
1613How to calculate voltage drop in copper and aluminium cable? I have laid 240Sq.mm Aluminium cable for the length of 600 Mtrs in 1 Mtrs underground. Normal load is 150A. Transformer is 630KVA, 6.KV/433V. But, I am getting only 395 Volts when load. How to calculate voltage drop and what is the permissible voltge drop for this circuit?
1 262711kv/433v delta/star distribution transformer primary side full load Ht current is 83.33A in , but input side VCB rating 800A.why?
1619Post New Electrical Engineering Questions
reason of diode failure in alternator
BRIEFLY EXPLAIN THE STORAGE CLASSES AND THEIR TYPES IN C
after how many spot we must chang secondry cable in portable spot welding gun?
why surge protectetor work explain with the help of circut diagram?
how was your last weekend.
I am interested to know what does 15 KVA DG set actually means? If I dont know the DG rating, is it possible to identify KW by simply knowing the diesel consumption?
current transformer balance the power level on both sides. e.g in case of step up, at secondary side voltage rise but current decrease and vice versa in case of step down transformer. but how this power level remains same in case of current transformer and voltage transformer
sourse is 66 KV / 350 MVA, transfarmer is 1000 KVA 6.6 / 0.415 kv, iF fault is 28.75 MVA on 0.415 KV Bus then calculat the Transfarmer Impidance
Can Anyone suggest the Standards (IEC or IS) for selecting copper current density?
what is the difference b/w UHVDC and HVDC(LIGHT)?
what is the Pickup/drop off ratio in BCPU relays
design a 3 bit synchronous and asynchronous counter using T- flipflop
What is meant by Im=30mA@Vk/2. How to know the kee point voltage for CT design
Why only sinusoidal ac voltages are generated?why not triangular or sawtooth?
Pls Breifly explain about UPS (Inverter,Reserve,Rectifier,Float voltage,Boost voltage).
