Why should The rating of 11 kV DO Fuse is in mulyiple of hundred(200 Amp. 40 Amp, etc) Ampere wheareses the its fuse elemnt has rating in just few Amp (< 12 Amp)? ( Is it jusy beacuse of factor of safty).

1 Answers  

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In star delta Schematic can we connect OLR in delta circuit

2 Answers   ABB, Lanco,

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What is Bolted fault?

0 Answers  

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The cable area of cross section is 185 sq mm. How to convert this to the diameter.

7 Answers   Syscon,

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How many types of electric motors are there?

0 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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what is the main difference b/w contactor and relay

2 Answers   Pace Pharmaceuticals,

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features of hbc fuses

0 Answers  

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what is the wattage of 'zero watt' bulb?

16 Answers   PSEB,

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What is the difference between Generator Differential Relay and Transformer Differential Relay?

0 Answers  

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why 3 phase motors are preferable over single phase motors ?

4 Answers  

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IN HT MOTOR HT REFERS TO HIGH TENSION OR HIGH TRANSMISSION?

11 Answers  

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