Answer / william lobo

Generally all cables are rated for ambient temperature. Now
temperature varies from place to place and hence we have
tables showing cables in air and cables buried underground.
Then there is cables spaced between one another which is
more important aspect.
Cable current carrying capacity should also be based on our
own judgement. The table only is a guide. Its just to help
us get the correct size cable for your requirments. So all
these factors help us in deciding the best size cable for
our load. Distance is also an important consideration due
to more voltage drop.

what is H.T?specify the range?

6 Answers  

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ohms law aplicable

16 Answers   APGenco,

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We have 2 Nos. Transformer with the capacity of 2000KVA and 1250 KVA and currently using only one 2000KVA T/R during operational hours while non- operational hous 1250 KVA T/R also used to reduce T & D losses. Similarly, 2 capacitor bank of 500KVAR and 300 KVAR also installed to balance reactive power. Now problem is around 1000 KW load PF is not maintaning 0.99 as 350 KVAR capacitor is in healty condtion. Now the PF is maintain 0.95 to 0.96.

2 Answers  

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for testing busbar (33kv) hi-pot .whether we can apply DC r not.and what is the test volt for that .explain

4 Answers   WGPSN,

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why power is generatd at 50 hz only..? can we do this on another freq...?

7 Answers  

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how current is reverse from its normal direction during the fault?

0 Answers   HGF,

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how vector surge relay works ?

3 Answers   BFL,

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What happens with squirrel induction machines if the ends of rotor conductors are kept open? Explain

3 Answers  

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What is meant by earthhing of a magnetic flow meter and when to use empty pipe detection?

0 Answers  

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I have two power supply.a)govt. power b)Captive power.3 phase load connected inside factory.when source change govt. source to captive some motor rotate reverse. Is phase sequence changes when if off & on?If I off generator & on it again is it possible to get changed phase sequence??

4 Answers   ABB,

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why we are using large cross section cable at load side and small at other (11kv to trsfr)side of transformer? when the load increses current at both side increases,right?

2 Answers  

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what happen if the load connected to the induction motor is taken away? the same question for synchoronous generator in synch i think that the the exitation voltage will appear on the terminal only if so plz answer me

0 Answers   Escorts,

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