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how many test is necessary for 27mva transformer.

3 Answers   HEG,

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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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how do you find making current and breaking current of the circuit breaker

1 Answers  

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why the electric train touches only one conductor n where is the neutral n it will be running 3-phase or 1-phase?

3 Answers  

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How to Calculate Current Rating of SDFU (Switch Disconnector Fuse unit) for Protectionof Capacitor Bank connected to Busbar of 800Amp,in LV side of 11/0.433KV, 250KVA Transformer?

0 Answers  

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What are the voltages at which electrical energy is transmitted

7 Answers   KSEB,

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What is the power factor you maintain at ur organization?

43 Answers   Cummins, Exide, Johnson and Johnson, KTC, Microsoft, Powergear, Secure Meters, Suncity Strips, Wheels India,

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Differnce between negative Pahse SequenceFunction and unbalance Function?

0 Answers   Atsco, LMW Lakshmi Machine Works Limited,

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How can eliminate noise problem inside temperature controller temp. variation due to contactor chattering problem.

0 Answers  

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what is relay what is protection & contact multiplying relays where it is used function in brief

0 Answers  

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what is -24vDC and how can generate this -24vDC

1 Answers   Blue Star,

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What are the types of AMF(auto main failure) panel.

1 Answers  

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