What is the difference between UPS & inverter ? which UPS is better and whos got the edge ? what is the difference between & inverter ? which UPS is better and whos got the edge 12 V , 24 V , 36 V etc what are the advantages of 12 V, 24 V , 36 V etc and what are the disadvantages of 12 V, 24 V, 36 V etc thanks

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What is the meaning of 'A synchronous motor floating on line'?

2 Answers  

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When we use air circuit breaker, it has O/L protection ,time delay SC protection, Instataneous SC protection & ground fault protection. They all have some setting range. But what is the suitable/allowable setting for the above protection which will be safe for the equipment? For example-O/L protection setting have a range of (0.4,0.45,0.5,0.55,0.6,0.65,0.7,0.8,0.9,1.0)xIn Time delay SC protection have a range of (1.25,1.5,2,3,4,6,8,10,12)xIn Time delay setting is 0.02,0.1,0.2,0.3,0.4 Instataneous setting is fixed to 20xIn Gound fault setting is given 100A,300A,600A,900A,1200A This setting are for 2500A ACB. So what will be the basic allowable setting for the above protection? is there any formulae to calculate this<

0 Answers   Lupin,

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what is the meaning of transformer short circuit test?

7 Answers   HZL, L&T,

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How does a clampmeter measures dc current

1 Answers  

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what is the effect of back reactive power on the generator ?

0 Answers   MRF,

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What is bode plot?

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how much current capacity of 300 sq. mm cable (4 core aluminium) and 150 sq. mm cable ( 4 core aluminium)

3 Answers   Bhel, RR Kabel,

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what is the difference between "ampere trip and ampere frame"

1 Answers  

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How to improve fuel cell in a distribution system?

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Why power genaration in India is at 50HZ while America its 60HZ

0 Answers   TATA,

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-----------means a source which can supply a constant voltage to aload irrespective of the valu of load resistance.

2 Answers  

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