Answer / farhan hashmat

ELCB mean earth leakage circuit breaker,and it is the old
name of RCCB(Residual current circuit breaker, further ELCB
is voltage depended operation and RCCB is current depended
phenomena.and MCB is miniature circuit breaker which is
operated on thermal or magmatic effect of current.

Answer / guest

ELCB

What is K-rated transformer? What is the use of it? What can be the size(pls provide calculation if possible) of K- factor transformer for 550kW,690V motor operating with drive (VFD)?

1 Answers  

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An ISP is granted a block of addresses starting with 150.80.0.0/16. The ISP wants to distribute these blocks to 2600 customers as follows. a) 200 medium size businesses; each needs 16 addresses b) 400 small businesses; each needs 8 addresses c) 2000 households; each needs 4 addresses Design the subblocks and give the slash notation for each subblock. Find out how many addresses are still available after these allocations.

1 Answers   UOG,

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How to do stting of vl250 siemens MCCB

1 Answers   Qatar Steel,

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State and define ohm’s law?

1 Answers  

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is synchrnous pannel is need for two eqal rating transformers to run in parallel

1 Answers  

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which motors are used in electric traction?

1 Answers  

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fuses rated by amperes but not power,why?

3 Answers   Blue Star,

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75 kw motor take 45 amp in no load delta in star 10 amp but in load it will take 160 amp but IR velue of winding above 500 at 1kw ph to earth and ph to ph. what problem it should be?

1 Answers  

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why cable i burning without tripping. how can protect led street lights

1 Answers   Cosma,

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why the 4 terminal are named as main, line, common, voltage (M, L, C, v) of a wattmeter?? why not its nameed as A,B,C,D??

6 Answers   Jindal,

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Why in medium voltage system(3.3kv to 33kv, neutral is earthed with either resistance, reactance or neutral grounding resistance?

4 Answers   Essar,

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IR value for 30kw lt motor

1 Answers   Hofincons,

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