Answer / rockyxyz

other 20% is the energy lost to surrounding mainly by
heating. The heating may be due to contact friction,air
friction,hysteresis,conductor losses etc..

I have motor 1500 HP and , 4160 V , 60 HZ , then i need the rating of transformer which can feed that motor ??

0 Answers   Elmaco,

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a transformer can have zero voltage regulation a)o pf b)1 pf c)lagg pf d)lead pf

2 Answers   SJVN,

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What is cp system and why is it required.?

1 Answers   Essar,

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What device is use for metering current at lt consumer end..??

2 Answers   Power Grid,

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a.c&d.c motor&generator

2 Answers   Vizag Steel,

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what is harmonics? what are the factors it will depend upon

0 Answers   KSEB,

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why ct is connected at bushing of transformer ??????????

3 Answers  

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What is WLD System????

3 Answers   Emerson, HCL, Honeywell, Tata Communications,

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what is the use of the puls transformer in UPS & how it works???????????

0 Answers  

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In a 3 phase 4-wire system. For a 3.5 core cable if all loads are single phase and balanced, what will be neutral current? will it be sum of all phase currents? Or it will be zero? And if loads are unbalanced what will be neutral current?

0 Answers  

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What is the need for checking knee point voltage for CT's?

1 Answers  

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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?

5 Answers  

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