Answer / k.prakashchandra

1 distance relay 2 Battery over current relay - Voltage vs current

Answer / shaik sharif

This type of relay also called electro magnetic relay .Contact spring and normally closed contact are connected in same shaft.

how to calculate the slowness and fastness of energy meter if we have different kw load for example (0.746 kw and meter rev constant 400 and we calculate the 2 rev in 30 sec) please explain the formula thanks

1 Answers   WAPDA Water and Power Development Authority,

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NOW A DAYS THE POWER SUPPLY IS VERY LOW.SO THE FLURESCENT TUBE LIGHTS ARE VERY DIM.IS THERE IS ANY WAY TO INCREASE ITS BRIGHTNESS?FOR EXAMPLE ANY CONVERTER,CONDENSER?

1 Answers   Bhel,

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why corona ring is used in out door switchyard lightning arrestor

3 Answers  

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why voltages are added when batteries are connected in series?

4 Answers  

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What is the criteria for deciding whther fire wall is required between two power transformers

1 Answers  

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What is the difference between ARC & SPARK?

4 Answers   OPTCL,

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How we can calc. the Backup time of a battery Bank???

6 Answers   Emerson,

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MCB MCCB ACB VCB

1 Answers  

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I need the recommended size for a 3 phase transformer at 13.8 KV Primary and connected loads of 3000 kVA at 4200 volts and 2375 kVA @ 480 volts AC.

0 Answers   Duke Energy,

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please let me know , we have installed two separate motor for fire fighting system 1) 60 hp and 2) 15 hp the load is 74 AMPS and 20 AMPS then tell me the main power cable in Aluminum will be what thickness , the length is 225 mt from the main utility to fire pump house

1 Answers  

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Electrical Design specifications

1 Answers   Sabic,

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what is the difference between transformer,converter and transducer

0 Answers  

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