Answer Posted / nagarjun

Apply 1.732*v*i*cospi.. We hv to know Wt the supply voltage is..

how generator load test is conducted?what are the steps?

1554

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What kind of socket shall be provided for window type air conditioner with cooling capacity upto 18000 BTU/hr

1021

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what is (+) and (-) in generator field detector stand for?

1782

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How many types of protection relays are there based on the characteristic?

1022

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What are the two segments of nyquist contour.

1044

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which connection is safer series or parallel?usually which connection we prefer at home?

9798

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What is Long rod insulator and it's applications..? merits over the disc insulator ..?

1855

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why we used dc supply for field in dg set

2336

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why electronic instruments is more favorable than electrical?

1915

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How to Design green buildings services? What is the advantage to design green building?

1747

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What is the bundle conductor?

1143

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Is MEN and RCD related to each other ?? IF yes then how??

1826

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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?

2094

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what is sevice settings for mccb?How can be it setted?

2129

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explain safety measures in alternator?

1712

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