WHAT IS NORMAL VECTOR GROUP USED FOR DESIGNING OF TRANSFORMERS??

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A simple Question from all.... If Voltage drops then its rated value what will be effect on a Residential load? similarly if voltage rises from its rated value then what will be effects on a load? i know if voltage drops the equipment or device draws more current then its rated what are other reasons ? thanks in advance for ur time.......

1 Answers  

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Please explain me about Relay curves and their sources to read ?

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what is the meaning of Air condition "TON"

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What is safety of Ht panel

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In 3phase supply Voltage will come around 370v then what will happen?(mean what will effect on electrical equipment like AC,UPS,Motors.)

1 Answers   NTPC,

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WHAT IS THE SIGNIFICANCE OF VECTOR GROUPS IN TRANSFORMER? WHAT WILL BE EFFECT WHEN PHASE DISPLACEMENT CHANGES IN TRANSFORMER?

5 Answers   ABB, Nissi Engineering Solution, NSL Sugars,

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length of 4 core cable 95mm from substation LV VFD panel to Motor at field approximately 150 meter. Motor stop and power has been isolated from LV MCC ( Substation )to disconnect Motor for services. After Motor completed service propose to reinstall and reconnect Motor Cable, found earth cable sparkling during touching at metal / motor body. Inspect by clamp meter found earth cable have current flow AC 1-2amps and all earth cable at MCC LV also have current flow as same value. why it is happen?

2 Answers  

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how does an open delta transformer works

2 Answers  

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why we use 50 hz frequency in india .. why not 60 hz 

3 Answers  

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why voltage rating not mention at HPSV or HPMV lamps?

2 Answers   OPS,

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Can We Apply DC POWER To Transformer???? And Why????

4 Answers  

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