Name two low frequency oscillators?

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why we are using Load factor?

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electrical engineering giving priority for insulators rather than conductors, why ?

5 Answers  

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What is distance between electrical panel to land ?

0 Answers   Fresher,

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How eddy current generation support the idea of train braking?

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why co incidence factor considered in transformer sizing?

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Why fuse is? What will prevent by fuse?

2 Answers  

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why the NGR (neutral grounding resistor) always OFF during DG off?

0 Answers   Bhel,

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why we not use capcitor in Three phase motor ??

2 Answers   GOMS, Power Electronics,

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we have two motors 1250kW,6.6kV to be coupled on the same shaft ,so please provide assistance for their synchronisation.

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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's the requirement of Dy11d0 connection of 3 phase transformer?what's use of it?

0 Answers   Thermal Systems,

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