Answer / sandeeprazz

short circuit

our company have 750 kva oil transformer.still we have facing a problem that is when voltage is 11.5 kv coming from HT side then LT-side voltage is 420v or above at tape 1.please give me best solution to decrease the voltage.

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gas turbine genrator reactances

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How can we increase the capacity of exixting capacitor bank??????????????? PLS. Help

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can i use 10 mfd + 6 mfd instead of 15 mfd capacitor in single phase motor as running capacitor

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what is the use of the puls transformer in UPS & how it works???????????

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Size of the 60Hz and 400Hz transformers is a) same b) 60Hz Tr s larger than 400Hz Tr c) 400Hz Tr s larger than 60Hz Tr d) None of the above

5 Answers   Ecil,

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In Air circuit breaker LSIG protection unit is used. Without fault in cables (2 runs 3Cx150Sq.mm Copper, 1Kv grade, XPLE armored cable IR value is more than 550Mohm @ 500V Megger) and load section Long time Overcurrent protection is triggers and trips the unit. We changed LSIG protection with new factory tested unit. Even then fault is persisting. Please suggest the possible causes

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it is possible to measurement of tension of slipring induction motor(SRIM)carbon brushes, any maesuring instruments are available in the markets.

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How to calculate cable size in sq units based on motor rating is KW

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