How to select the Cable size for 550 Amps Load without seeing the cable Catalogue?

8 Answers   Nesma,

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in the directional overcurrent and earthfault protection,normally we are setting the angle 45 deg lead for phase fault overcurrent and -45 deg lead for earthfault fro forward direction.but both the fault are operating on the same angle region only.why?how the relay will response?

0 Answers  

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Pls say , how we calculate lux / sq.ft, which formula used for calculation

5 Answers  

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which pump used in STP

0 Answers   Dalkia,

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why transformer rating is in kva?

11 Answers  

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What is the output voltage of a DG set.

3 Answers   Fitness First,

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how to calculate the current carrying capacity of a conductor. How it is related to diameter of cable or conductor

3 Answers   AGC, BARC,

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Can RCD's used to protect the VVVF drive if not why.

0 Answers  

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WHAT IS MOBILE SUB-STATION? & REALLY BENEFIT IN INDIA

0 Answers   BMC,

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A.V.R maintains the voltage of a generator when it is in island mode but when the generator is synchronised with grid it maintenance the P.F,how it happens please any body explain it in detail.

2 Answers   TATA,

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what is the use of Turbocharger in a gen-set?

3 Answers  

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What will be the output voltage of a transformer if it is primarily energized from a square wave voltage source?

0 Answers   HPCL,

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