Answer / felixraj

to avoid circulating current(30-ed harmonic ct) b/w neutrals

Define average demand?

0 Answers  

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what is the standard values(Megger test) of resistances between L&N,L&E and N&E for a system on IEE regulations?

0 Answers  

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What are the different condition monitoring techniques for a motor?

1 Answers   DAE,

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What is the effect of positive feedback on stability of the system?

0 Answers  

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why commutator are not used in rectification purpose in power electronics?

1 Answers  

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what is use of substation? Any book on how to instal or construction of substations?

6 Answers   Siemens,

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What happen when ct secondary are open circuited? why same thing is not happen in ordinary transformer?

3 Answers   BARC,

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how to measure the dc current?

3 Answers  

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in dc shunt motor if armature wdg is open then

1 Answers  

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if we going for high voltage usages what are the considering factors, why those factors are effected.... please give me an answer related motor factors like wnidnig, frame, temp etc

1 Answers   ABB,

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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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Is there such a frequency as 440v 50Hz?

1 Answers  

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