Answer / rk singh

If fault occures in power system,in that time how much
current is weared by system without damage; is known as its
fault level rating.

I have a 25 KVar capacitor bank at my facility.How to check the capacitor bank ??

2 Answers  

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What is the deffirant between EARTH, GROUND AND NUTRAL

4 Answers   TCS,

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can any one help me out by posting something related to rvnl interview for site engineer electrical.? what is the procedure? what kinda question they ask us? how long the interview goes? and any tips? and any thing you want to share?

0 Answers  

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y we are used signal conditioner in capacitive transducer

1 Answers  

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1.type of oil in used in transformer.

9 Answers  

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What is the kiosk parts, about them and their functions ? If anybody have some PDFs files or details about this plz send it on tawhidfaisal@Yahoo.com

0 Answers  

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what is meant by directional earth fault and non directional earth fault? describe both.

0 Answers  

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how to check avr of dg set of 125kva

0 Answers  

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What current flows in the transformer primary when its secondary is open?

0 Answers  

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One of our gas turbine generator unit "1st stage rotor ground fault" alarm was occured several times. we tried to measure some voltage vulue ground fault protection relay (UNS3020a made by ABB and we measured the value of: Ground: 0.9VDC 5V: 5.8VDC 24V: 23VDC u+: 300 – 350mVAC Rf1: 17.5mVAC Rf2: 17.6mVAC The unit still running and the alarm was reset. As of 6pm yesterday and unitl now no alarm happened again. I our protection relay was defective?

1 Answers  

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how work the lighting arrestor?

2 Answers  

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We use ungrounded DC system (220V/110V) for control and protection system in substations etc. Suppose we have long 2 core DC cables running from our DCDB in control room to the load (length of around 2 to 3 km). Do we need to protect these long DC cables from earth leakages or not? If yes how?

5 Answers   Siemens,

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