Answer Posted / fajar

ow can I communicate with an Areva MiCOM P121 relay by
RS485 port? In other word, which command can I send and
what information can I have recieved? please send some
refrences, please. thanks

pls tel me the electric train traction motors name plate details like rpm,torue,voltage,amps,watts..ect..

1557

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Mention the difference between Analogue and Digital circuit?

676

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What is different bewteen low or high impedance busbar protection scheme

3656

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In EHV transmission line a neutral grounding reactor is often placed at neutral point of shunt reactors. What is the recommended protection for this neutral grounding reactor? Should I use a fast closing switch to bypass neutral grounding reactor when this protection operates?

2751

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what is the function of bearing in dc mchine" and where it is placed

2070

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what is ps impedance test

1655

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please explain to me how to calculate current,voltage,resistance with formula??

971

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How will polarity test of Dy5 Transformer ?

1781

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What products have you designed which have entered high volume production?

1574

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How to know about the rating(voltage and other) of induction motor if its name plate is missing at the manufacturing site.

2869

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Why line VTG = √3 phase VTG in star? How?

1172

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WHAT R THE SAFETIES IN A HIGH TENSION PANEL N LOW TENSION PANEL. ALSO WAT SAFETIES R THERE IN A 200 KVA TRANSFORMER?

1817

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our factory is going under construction mean time transformer 1000 kva 2 nos &load break swithch 12 kv & 4 nos 750 kva 2 nos & 380 kva 2 nos generator to be errcted.how to arrange earth pits &how to earth connect & neutral pit how to calculate in earth bit size.

1654

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how to setting Load amps tripping time and extra settings for load Transformer protection relay with RMU panel using C&S model relay..?

583

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What is a DC series motor?

712

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