Answer / narayanan

protect to the transformer,
human safety
short circuit for protect the transformer
eb line neutral earthing is not work to support neutral
earth
constant voltage

Answer / balachandra

Neutral grounding and its advantages. ... Neutral grounding provides protection to personal and equipment. It is because during earth fault, the current path is completed through the earthed neutral and the protective devices (e.g. a fuse etc.) operate to isolate the faulty conductor from the rest of the system.

Answer / sonu

to protect transeformer from over voltage during unsymmetrical fault
adv> keep voltage constant of healthy phases

what is the working principle of electrical generator

1 Answers  

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1 Answers   BMM Ispat,

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why Ac current is alternating in nature?(or)why alternating current changes its direction?

3 Answers   APGenco,

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Transformer type...??

1 Answers  

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I BOUGHT A HAVELLS ACCL WITH GENERATOR STOP FASCILITY(i.e- BASICALLY IT IS A AUTO CHANGE OVER SWITCH) FOR MY HONDA EXK 2000S HOME GENERATOR (WHICH START IN PETROL & RUN IN KEROSENE). ACCL HAS 8 POINT. 2 FOR MAINS(PH & NUE), 2 FOR LOAD, 2 FOR GEN AND 2 FOR IGNITION POINT(X1 & X2). THE IGNITION POINT IS SPECIALLY FOR AUTO ENGINE STOP WHEN MAINS POWER RESTORE. I CONNECT THIS X1 & X2 POINT TO THE GENERATOR STATER MOTOR & EARTHING POINT. BUT WHEN MAINS FAILS THE GENERATOR COULD NOT START, BUT WHEN DISCONNECT THOSE X1 OR X2 POINT, THEN THE GENERATOR START. BUT WHEN MAINS ON THEN THE GENERATOR SHOULD START, AND WHEN I OFF THE MAINS THE GENERATOR AUTOMATICALLY STOP. PLESE HELP ME HOW I STOP THE GENERATOR AUTOMATICALLY WHEN THE MAINS RESTORE.

2 Answers   Honda,

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why impedance relay is used for medium transmission line protection

0 Answers  

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What should be setting for alarm,tripping and cooling fan on for power transformer's oil temp. and winding temp. indicator?

0 Answers  

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2 Answers   NHPC,

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what does the word synchronous mean in 'synchronous machine'

3 Answers  

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What is it mean Transformer 100/133MVA Power Transformer, significance of 100/133 MVA and 230/115KV please

3 Answers  

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Why 60Hz motor taking more current on load in 50Hz power supply?

1 Answers  

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how to make an earthing certificate

0 Answers  

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