why the substation require din electrical system?

1 Answers  

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explain the meaning of harmonic resonance

0 Answers  

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What is the effect if power factor is above 1 or unity.

15 Answers   NTS,

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advantage of motor design on higher power factor . normally motors are designed for .8 power factor. what is advantage of designing at .88 power factor

0 Answers  

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why test lamp didn't glow across 500v megger?

4 Answers   Aurobindo,

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how hazordious area is classified at an oil & gas plant and categorise suitable class of electric equipment in that area like induction motors, LCS, Lighting Fixtures Fluerescent/Flood lights Mercury& sodium lights, J.Bs, Power Cables etc

2 Answers  

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why dont we connect the two 12 V DC batteries in parallel, for an inverter (UPS)? is there any harm ?

3 Answers  

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what is meant by CT burden = 10 VA?

1 Answers  

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hello friend i wish to study a course related to the electrical construction, controlling and monitoring , which course i want to study? pls give me the name of institute?

0 Answers  

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How to work E.L.C.B and how to connect in circuit.

0 Answers  

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How to calculate the current carrying capacity of sized cables, and there is any formula. please send to 'than.achu@yahoo.com'

1 Answers   Blue Star,

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7- What is the Dissipation Factor and the difference between it and Insulation Resistance Test? 8- What is the task (function) of DC and AC reactors in power plant? 9- What is the task (function) of (open delta with earthed) in some types in transformers? 10- What is the base of the selection of the vector group in transformers? 11- What is the zig-zag transformer and its function by drawing in large detail? 12- What is the polarity ? 13- Why we make short between phase(R) in high side and phase (r) in low side in vector group test? Where High Side ( R ,S and T ) and Low Side ( r ,s and t ). 14- What are the time on delay and time off delay? 15- What is the vector group? 15- What is the task (function) of different types of vector group such as Dyn11 , Dd0 , YNd1,……..,?

0 Answers  

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