Answer / graeme

80mA seems to be a lot of gate trigger current.

Firstly, this information should be published in a
manufacturer's data sheet.

Secondly, generally the gate trigger current required at
elevated temperatures is less. So if you used 80ma as a
value at +60 degrees C, you'd be safe

in electrical control panel. how can i choose the cable rating. (example - 11kw motor, 18-25A mpcb}

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I have a question, I visit 01 site and face a problem, there is 2.5 ton Air Con working, when air con compressor is running at that time rectifier voltages are increasing upto 290-295 v and rectifier is giving main high alarm (rectifier is APC single phase), before starting compressor rectifier voltages was 230v. when air con is going off rectifier voltages are decreasing smoothly at its actual voltages 230v. Load on Genset phases is this: Red-13.5 amp AC (Air Con load), Yellow-1.7 amp AC (BTS lights etc.) and Blew-4 amp AC (telecom system load), Genset phase to phase and neutral to phase voltages are also ok. These are 10 sites having same system and same rectifier APC brand at every site 02 genset are working but the problem is same at all these 10 sites. What will be the reason behind???

1 Answers  

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difference b/w series&parallel

4 Answers   ABB,

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Why converter duty transformer neutrals are not earthed...i am still not sure if this question is also correct...Please email at ranjan120482@gmail.com

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can we do the star delta connection of capacitor for 3- phase motor starter.

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how to modify DOL control panel into Delta Y connection?

0 Answers   ABB, PDCS,

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difference between turns ratio and transformation ratio?

2 Answers  

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what is the star delta connetion and how can do it a three phase motor with control witing with picture

0 Answers   Aurobindo, SA Kent, Wipro,

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When we are working on transformer(132\11KV). we are going to isolate the transformer from both HV side and LV side. then we are applying grounding on both side. My question is that we required to isolate the VT which is still connected from secondary side.?

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why transformer has more efficiency compare to rotating machine?

3 Answers  

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identify the components of the tube light and explain how they function???wat is inside the fluroscent tube???how it works???

7 Answers   NTPC, TPL,

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what is diff btw electric,magnetic & eletromagnetic field

0 Answers   Senthil,

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