What are the components of feedback control system?

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If we want to change a contactor of faulty one what are the conditions want to fullfil

0 Answers   Qatar Shell,

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What is mean by Sub Synchronous Resonance(SSR)???

1 Answers  

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Relation between pyramids and electrical technology?

1 Answers  

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could i arrange a faulty and healthey battery bank togather in parallel , if your ans is not then why?

3 Answers  

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Hi ,what the accurate method to set correct(In) over load to protect the 3~ motor

4 Answers  

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in our transmisison sub station why we step down firstly 132kv\33kv then 33kv to 11kv. can we direct step down 132kv to 11kv.

2 Answers  

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why active power is called as real power or working component.What is the exact function of active, reactive & apperent power.

3 Answers  

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what is the speed of mixie?

5 Answers   Keltron, TCS,

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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 we control automatic generator i'e with to supply (main supply and local generator) when the main supply was break to supply the local supply automatically to begin supplying power.I now this control circuit is the combination of contactor time delay contactor switch and overload relay .but my question is how we combine those component thank you

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What is earth system using on the floater TN-S or TT. Iam not sure and what ICCP

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