What are the different protection systems takes place on control panel board?

7 Answers   BSNL,

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In both 600/1000 V cable and 450/750 V cable, we can supply 415 V. However for distribution, all utilities are using only 600/100 V instead of 450/750 V. What is the reason?

0 Answers  

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220/33kv voltage level having 60MVA rating , which transformer is preferred two winding or auto transformer. why, kindly provide your strong technical valuable views.

1 Answers  

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what is over frequency protection

1 Answers  

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What is the function of restraining coil in differential relay? as well as restraining current?

8 Answers   Medical, Siemens,

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How to size fuse? How to size MCB?

0 Answers  

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Q. calculate the value of the resistor to be connected in series with a 100W; 230V lamp so that the wattage of the lamp is reduced to 35W

8 Answers  

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What is the function of RCBO? What are the different sensitivity ratings & each application?

0 Answers   L&T, Legrand,

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How to measure the earth resistance value in a concrete pavement(flood light area)?

0 Answers   ANZ, Watt,

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why connecting surge unit in contactor coil

0 Answers  

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What is the basic difference among Circuit breaker,Contractor and Isolator? Are they different names of same device/equipment?

2 Answers  

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how to deside the capacity of chock for drive?

0 Answers   Essar,

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