Answer / neoveyron

CTUM 15 is a alstom make electromechanical relay used for the Sensitive earth fault protection for feeders by means of a CBCT. These operate on the principle of leakage current measurement by means of a residual connection of CT or a CBCT. These can be set for 1% to 16 % of CT ratings. The time dial settings can be set from 60 milliseconds to 750 miliseconds. These provide protection against high resistance ground faults on an earthed system.

What size cable (based on voltage drop) is required to supply a 40 A three phase boiler if the wiring system is 75V single insulated cables installed in non-metallic rigid conduit 56m from the main switchboard? Voltage drop in the consumer's mains is 8V.

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Why neutral shows voltage with earth ?

2 Answers   MRF,

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What is the meaning of C1, C61, C91 cable

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1.Can anybody explain Why starters are not used for motor starting in industries? 2.

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What should be the earthing resistance of an industrial substation and also What should be the house hold earthing resistance?

20 Answers   Jindal, Pharma, TAAT, TATA,

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1.WHAT ARE TRANSMISSION LINE LOSSES DURING WINTER AND SUMMER SEASON? 2.WHAT ARE THE CAUSES/ 3.WHEN THE CORONA IS MORE?.,WHETHER WINTER OR SUMMER? 4. WHAT IS THE PERCENTAGE OF LOSSES IN TRANSMISSION LINE?

1 Answers   Coastal Energen,

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how to decide the panel size like MDB ,SMDB PANEL SIZES

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What is the formula to calculate capacitor bank rating for a certain load.

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What are the two segments of nyquist contour.

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how many amps in 1KVA?

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How much CTs are required to measure th curent in DOL starting of motor?PLs explain.

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What is a Phase shift meter? Where can I get one?

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