why the earth is taken minimum in supplying? wather it the proportional factor to getting work any equipment or a power plant?

0 Answers  

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What is the Difference Between MCCB & ACB & VCB

4 Answers   ABB,

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What are the protection schemes used for protection of transformers ?

3 Answers   Engineers India Limited,

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We have drive feeding an output contactor for a 5000 hp motor @ 5kV application. The motor FLA is 629amps x 1.25% service factor = 786.25 amps The cable that we current have in place between the drive and the output contactor is 350kcmil- MV-105 (parallel cables). Per the NEC table 310.60 (C) (69). This show the cable ampacity is at 615 amps per cable for a rating of 1230 amps. We have derated the cable for the cable tray and the multiple cables application and our calculations show that after the correction factor factor we are at 922amps. 1230 amps x .75% correction factor factor = 922.5 amps. The customer is driving us to then use another safety factor of .25% off of the already derated cable. Can you please provide a longhand calculation for your solution on this application?

0 Answers   Siemens,

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WHAT IS DIFFRENCE BETWEEN 3 PHASHE AND 1 PHASHE

6 Answers   Reliance,

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Why neutral is not used in three phases dol starter

0 Answers  

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When induction motor is started,we see all other electrial appliances connected on the same supply are dimmed out for some moment why?

4 Answers  

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what is the internal working of star delta starter

0 Answers  

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For an 100kw generator, only 50kw of load is connected. Will the generator generate only 50kw or 100kw. If it generate 100kw what happens to rest of the 50kw. What happens if we connect more than 100kw of load?

2 Answers   L&T,

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how many amps in 1 KVA? V=440v, PF=0.8 and FREQ=50Hz

22 Answers  

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how to calculate the current carrying capacity of a 25 & 16 kva distribution transformer.

2 Answers  

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why we use dc motor instead of ac motor?

7 Answers   Air Force,

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