What is the effect on in Zone and out zone fault if Phase side CT is Vk/2<30 mA and Neutral side is CT is Vk/4<30 mA for Transformer REF protection

0 Answers   ABB,

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How are calculated the aluminium busbar cross section area?

2 Answers  

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what is impedence (Z) of transformer, what indicate in transformer , which perameter indicate in transformer

5 Answers   CTS, Suzlon,

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what is the formulae for selcting capacitor bank to increas pf

4 Answers  

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how much insulation resistance 11kv & 33kv under ground cable between earth to phase & phase to phase.

4 Answers   Siemens,

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What is the effect of impedance on the heat losses in case of AC system??? Does heat losses really depends on the impedance or depends only on resistive component only..??

4 Answers  

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what are earthing material

1 Answers  

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If we impress a dc voltage of 230 V on an unloaded 230 V, 50 Hz transformer it wi A give high secondary voltage B burn out C give secondary voltage as per K D none of these

0 Answers  

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what is the difference between gsm and cdma??

2 Answers   QMS, Vedanta,

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How many types of timer ?which timer are used star delta feeder

1 Answers   BMM Ispat,

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WHAT IS THE THUMB RULE FOR DECIDING THE CURRENT RATING OF COPPER WIRES SAY 2.5/4/6/10 MM SQUARE SIZES??

14 Answers   Dubai Group, Saudi Delta Groups, Savitha Electricals,

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Difference between RCCB, RCBO and ELMCB.

0 Answers   Megatron Solutions,

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