Answer / kj

These are both used on a DG.

The short circuit maintenance CT is used to keep the output
voltage and current high enough to clear a fault by
tripping an overcurrent device (circuit breaker).

The droop CT is used to cause the voltage to decrease as
the kvar load rises. This is used to help DG's share the
kvar load.

internally connection of photvoltic module

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Which of the following are ill suited for energy efficient motors application?

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A 7 storey building has a floor area of 35,000sq.ft on each storey. On the ground floor 11KV electrical sub-station is to be erected. A load of 3kw for every 400sq.ft (p.f is 0.8) is proposed for each floor. fire pump 7.5hp, water pump 5hp, lift 2 nos, each 10hp and 20shop load of each shop is 5kw. calculate a. load each floor b. total load of building c. L.T feeders for aech floor and from transformer to main. d. distribution diagram e. capacity of sub-station/capacitor bank f. line diagram

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how the capacitor work on dc?

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why the electrolyte level in lead acid battery is maintained 2.5 cms above electrodes?

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IAM WORKING IN THERMAL POWER PLANT AS A TRAINEE.. I WANT TO IMPROVE MY CARRIER., IF ANYBODY KNOWS ANY COURSES., ANY TESTS, ANY BOOKS ,, ANYTHING PLS HELP ME..

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i have a wire.and the current flowing in that.when we cut the wire then why dont we seen the elactrons....

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Welding machine

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why motor starting current is High ?

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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?

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why earth wire is needed in a wiring system

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what role neutral plays in electrical circuit? If neutral is not there what will be the effect

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