how indusrial diesel generator work

0 Answers   Johnson and Johnson,

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The control system is used for?

3 Answers   CCP, NTPC,

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what is resistance?

5 Answers  

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what is the working process of over & under voltage relay.

0 Answers   NTPC,

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Dear sir, How to calculate 3.5 core pvc aluminium armoured cable meter wise,give with best examples.... please help me in this regards....

1 Answers   Modi Builders,

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What is the minimum setting in REF relay because i am facing some problem whenever power resumes after power failure my transformer is tripping because of REF trip. I am using CSPC make numerical relay(DIP switches). Now setting is 15 percentage. What is the reason for this triping. I sm waiting for answer

2 Answers  

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Why two main buses and one transfer bus scheme not using for 400kV switchyard

5 Answers  

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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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HOW WORK HEAT PLATE EXCHANGER

0 Answers  

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how many voltage or current enough to kill a person?

12 Answers  

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Why the ceiling fan has three blades, why not two,four or five?

4 Answers  

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what is the contact resistance of sf6 circuit breaker??

2 Answers  

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