Please let me know when replacing electromechanical Relays for protection of generators with sr489 multilin Relay, then there is no need to use 86 master trip relay Too. I am wondering this multilin relay has no contact to Stop breaker reclosing as 86 does

1 Answers   Neucel,

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OHMS Law is only applicable for ac or dc or both circuiT?.

6 Answers  

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Transformer not operated in dc ! why?

10 Answers  

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which type of capacitors using in single phase motors

1 Answers   Vishnu Infra,

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what will be happened when a single phase motor is supplied by the dc supply

3 Answers  

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how does electrical train works and what type of motors are used to drive the train? which level of supply voltage is used?

22 Answers   Alstom, Infotech,

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The electrical energy required to raise the tempreture of a given amount water is 200 kwh. If the heat losses are 20%, the energy required is?

0 Answers  

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how the direction of rotation in a dc shunt motor could be reversed?

2 Answers  

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How to find Cable size? Caterpillar generator produce (Two generators) 127*2=254 amp at 11 kv . What would be the cable size (XLPE) to supply 256 amp at 11 kv? Air or surrounding Temperature is 32 degree C. Cable will go under ground at 2.5 feet depth. Group Rating Factors is 3 cables. Clearance between cables is 7 cm. Soil Temperature (Ambient) 28o C Soil Thermal Resistivity is 1.2 K.m/W I would like to use 3 separate single core instead of using 3 core cable. Some says I should use three separate single core 120RM cables. Some says 70RM .some says 95. I m totally confused. Is there ant specific rule to determine cable size? What would be the LT cable size to flow 500 Amp current? Ifte My e mail address is ifte13@yahoo.com Anyone please send me the answer to my e mail address, i will be very glad.

1 Answers  

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What are the types of transformers according to the arrangement of iron cores?

0 Answers  

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how many types of accuracy class in ct? what is meaning of 5p20?

1 Answers  

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How to size Air Circuit breaker (ACB)? What is the most important factors?

0 Answers   ABC,

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