Answer / ankur jain

all the neutral wires are conneceted to a single point and
that is connected to deep inside the earth, this is called
earthing , done to protect the equipments from high fault
currents.

Answer / ravi awasthi

earthing is a technique ,which is used
to protect electrical and electronics equipment .

Answer / nalini

To get a safety of overload current

how to take the 3 phase ups input and collect single phase output

1 Answers  

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WHEN THESE TRANSFORMERS WINDINS CONFIGURATION ARE USED? SPECIALLY EXPLAIN REGARDING STEP UP AND STEP DOWN KEEPING IN MIND.AND REGARDING LOAD ALSO. a.star to delta b.delta to star c.delta to delta d.star to star ALSO EXPLAIN WHY V USE 415/415 TRANSFORMERS IN TUBEWELLS?

1 Answers   ABB,

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What is x/r ratio?

1 Answers  

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Tell the details of the precommissioning tests that are performed on distribution transformer, power cable and switchgear (11kv).

1 Answers   Reliance,

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explain harmonics in simple words..........

3 Answers   HMT,

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How to test Alternator stability test for REF relay

0 Answers   Amprotec,

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I have a question, I visit 01 site and face a problem, there is 2.5 ton Air Con working, when air con compressor is running at that time rectifier voltages are increasing upto 290-295 v and rectifier is giving main high alarm (rectifier is APC single phase), before starting compressor rectifier voltages was 230v. when air con is going off rectifier voltages are decreasing smoothly at its actual voltages 230v. Load on Genset phases is this: Red-13.5 amp AC (Air Con load), Yellow-1.7 amp AC (BTS lights etc.) and Blew-4 amp AC (telecom system load), Genset phase to phase and neutral to phase voltages are also ok. These are 10 sites having same system and same rectifier APC brand at every site 02 genset are working but the problem is same at all these 10 sites. What will be the reason behind???

1 Answers  

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what is a synchronizing lamp ?

0 Answers  

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What is the diffrence between PS & metering CT (5p20,0.5 etc.)? Why in PS class CT only Vk is given ? Is PS class CT is more accurate than metering CT?

1 Answers  

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How to select a cable size for particular load?

0 Answers   Amit Enterprises, Takasago Engineering, Techno Electric and Engineering,

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We are dealer in Maharashtra State & We have recd. form C from dealer of Maharashtra State against our E-1 form. Now assessing authority is asking for counterfoil of our E-1 form. But, our E-1 form counterfoil is misplaced somewhere & assessing authority is disallowing the C form which is recd. from Maharashtra State.Please let us know the option for allowing C form?

1 Answers  

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What is the real use of reactive power in a electrical system other than loss (inductive &capacitive).I want to know its real physical significance.

0 Answers  

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