what are the names and size of various conductors used in transmission lines

1 Answers   NTPC, Power Grid,

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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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Plugging is a phenomenon to= A braking the motor B to accelerate the motor C to run IM as generator D to start the motor

0 Answers  

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Where can I get CPWD electrical specifications & Shedule of rates? Please help me

0 Answers  

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What is auto reclose system in Circuit breakers??

4 Answers  

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What is the working of Field winding in dc motor, in which part is it work or why ?

3 Answers  

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how to reduce the power consumption in office ?

6 Answers  

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What is the difference between UPS & inverter ? which UPS is better and whos got the edge ? what is the difference between & inverter ? which UPS is better and whos got the edge 12 V , 24 V , 36 V etc what are the advantages of 12 V, 24 V , 36 V etc and what are the disadvantages of 12 V, 24 V, 36 V etc thanks

0 Answers  

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i need previous entrence exam papers of nhpc.

0 Answers  

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check list of maintenance of transformer?

11 Answers   ABC, Cosmos, EPRON, Essar, Godrej, Hescom, Infosys, KPTCL, TCS,

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why anti pumping relay is not given to tripping coil of the breaker? why only to closing coil?

2 Answers   INEL, Siemens,

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Can without battery on line UPS,off line UPS or Invertor works please brief.

5 Answers  

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