Answer Posted / manish

LT motors works with below 700 volts and HT motors is
working on or above 700 volts.

what is stper motor

2466

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How to calculate the size of earth cable to earth the neutral of UPS ?

1991

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What happens if the negative to earth voltage is greater than positive to earth voltage in the battery of substation?

1613

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how to calculate the cable current ratingand and how much of distance the rating will be ok will the distance is incresed what the action we take

2187

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My question is whether bellow formula is correct to find bus size for 46kA for 0.5 second & what is RT in bellow formula. formula to calculate the size of busbar to withstand the thermal stresses due to currents with duration of 0.2 sec to 5 sec. Sp = RT( I x I x t) / K Where Sp – is the cross sectional area of bus bar in millimeters. I -    is the value of AC fault current. t -    is the operating time of disconnecting device in seconds. K –  is the factor depending on the material of the conductor, insulation and initial and final temperature. Value of ‘k’ for copper is 143.

1930

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what is the use of sdf?

2160

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what is the meaning of number in (11, 31, 61,14, etc. CDG11, CDG31, CDG61, DDT32

1489

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In siemens S7-300 PLC, what is function and function block ? What is the difference between them ? When to use function and when to use function block ?

3191

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what is KSR type transmission tower? What is LSR type transmission tower?

5429

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how to set the time in digital timer ?

2074

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how much value of resistance should connect to 15 kw, 6 pole 3 phase slip ring induction motor having RV-240, RA-42.

1973

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Tell me the reason of connecting domestic t/f primary in star or delta,and also secondary side.

2034

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What is the current carrying capacity of 35sq.mm flexible cable?

1508

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how does the thyistor work in dc drive?

2031

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HOW WE CALCULATE CURRENT IF THERE ARE NOT PRESENT ANY AMMETER OR MULTIMMETER??????

1920

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