Answer / panket patel

more because rotor core losses are neglected.

Answer / jatin

C less

I have 2500KVA transformer delta/star,13.8KV/380V provided with LV 4000A breaker. Already I have 2300KW motor feeder with a full load 90%. Is it possible to connect another 1600A from that breaker? If so how the calculation is done?

0 Answers  

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What is the minimum setting in REF relay because i am facing some problem whenever power resumes after power failure my transformer is tripping because of REF trip. I am using CSPC make numerical relay(DIP switches). Now setting is 15 percentage. What is the reason for this triping. I sm waiting for answer

2 Answers  

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If not into production, how far did you follow the design and why did not you see it into production?

0 Answers   Bharti, Havells, Intel,

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what is the difference between Resistance VS capacitance

2 Answers   Jindal,

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For Eg a 30 kw motor at full load how much kw it takes And at no load how much KW it will take?

1 Answers   GEPL,

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what is O.T?specify the acceptable range?

2 Answers  

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For electrical designers what are the standard should know? i want learn about this standards. how to get information/reference. anybody help in this regards please.

0 Answers  

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WE are using a 63A MCCB(SIEMENS MAKE) for one of the feeder in LV substation panel.It is supplying to a lighting & power socket DB.Settings in the MCCB is Ir = 63 * 1 , Isd = 8 times of Ir , tsd = 0.5 sec( I2 t off). Sometimes this MCCB is tripping .But no trip in DB MCB. Can anybody tell me reason ? From where i can know about the MCCB settings?

5 Answers  

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why high speed tripping relay is used in protection circuit why not normal relay

0 Answers  

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In Fluorescent tube there is a writing like 6500k . what this 6500k represents?

4 Answers  

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comparision between mcb,mccb,elcb,flcb,elcb in details

0 Answers   ABB,

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What are types of losses in the Transmisson Lines ?

4 Answers   GE,

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