what is REF relay?

1 Answers  

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What is the formula for calculating transformer Efficiency?

2 Answers  

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What is principal to reduce earth leakage current with isolation transformer? When isolation transformer is installed in input stage of system, earth leakage current is reduced. the reason is why the leakage current of 2nd stage of isolation transformer does not affect the 1st stage's leakage current. I would like to know the reason. As you know, earth leakage current is a kind of AC. So, How to reduce earth leakage current in case that isolation transformer is used?

2 Answers  

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how to syncronize two dg sets

3 Answers  

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what is the function of fire alarm system?

5 Answers  

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Why restricted earth fault protection is needed? Why can’t differential Protection is sufficient?

3 Answers  

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what things to be considered when designing UPS

0 Answers   Aplab, Veta Kipawa ICT Center,

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how does a current carrying conductor posess a magnetic field. what is the reason for the production of electro magnetic field around the conductor

2 Answers   Vizag Steel,

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what are the insulation properties.

2 Answers   Cable Wireless, MAHINDRA,

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Why you want to join non technical field when you are an engineer?

0 Answers  

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what is the difference b/w circuit breakers and relays?

3 Answers  

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WHAT ARE THE CHARACTERISTICS OF AN VOLTAG AMPLIFIER

0 Answers  

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