Why AC current leads voltage in capacitor and how?

0 Answers   BMB,

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What are the minimum acceptable insulation resistances of insulation of underground cable suitable for 0.440kV,11kV, 33kV and 66kV?

2 Answers  

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What are the effects to a distribution transformer rated 10Kv with ratio 10Kv/0.433Kv, 3phase 50hz for example but fed with power supply of 11Kv?

2 Answers  

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hi friends how 3 phase converter functioning ?what is working principle of rotory phase converter ?

0 Answers  

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While elctrical load on DG,capacitor banks kept off why so? If capacitor banks on is their any effect DG?

4 Answers   IL&FS Infrastructure Leasing Financial Services,

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I have tow 200 KVA UPS, both are in parallel mode.My question is that, both are running on battery when power fail, if one of them fail (Eg rectifire fails or some other reason), at thet time reverse power will come to faild ups if it comes then it will harm to failed ups or not? if not then how it protects to faied ups????????????????

1 Answers  

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our plant maximum demand has 500 kva.need to suggest me to maintained pf 0.98.how much capacitor bank will be connect to the supply line.

1 Answers  

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What is main difference between earthing and neutral grounding?

3 Answers   Jindal,

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No load test of induction motor is carried out to compute= A stator resistance B rotor resistance C magnetizing reactance D rotor reactance

1 Answers  

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what is the procedure for three phase motor differential relay testing can it do with single phase test kit?

1 Answers   ABB,

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I want formula to calculate cable size as per load given in length & amp. I searched many sites but didn't right answer. Please reply me asap.

0 Answers  

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on 22.03.2015 at 17:15hrs Y phase 66kV class Power Trf-2 Current transformer has flashed over and oil came out. The failed CT has been replaced on 24.03.2015 at 13:15hrs and the Trf has been charged in presence of RT Hassan after conducting the pre-commissioning tests. On the same day at 17:00hrs the commissioned CT has again flashed over and immediately the Trf  has been isolated from power supply. It is confirmed the secondary is not opened and checked the earth integrity and is found ok. Here what would be the reason for the CT failure? 

2 Answers  

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