Answer / sandma

To convert ac into dc,then store it in the batteries.when a fault occurs relays are act on only in dc,and for lightining purpose in the substation.BATTERIES are heart of the substation.

Answer / jithendra adusumilli

all the controls (VCB's & protections relay) will be on DC

When the AC supply is off then for identification of the VCB's & control will very easy it means heart of the Control

Answer / n.prabakar

DC supply only for breaker control because ,if plant came to blockout we cant resume even EB suppy without breaker close.

Answer / azhakesh

In all industries sub station contain DC pannel to run the total plant with DC for the constant power supply and avoid the fluctuvation.

At a family reunion were the following people: one grandfather, one grandmother, two fathers, two mothers, four children, three grandchildren, one brother, two sisters, two sons, two daughters, one father-in-law, one mother-in-law, and one daughter-in-law. But not as many people attended as it sounds. How many were there ?

6 Answers   CTS,

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11kv/433v delta/star distribution transformer primary side full load Ht current is 83.33A in , but input side VCB rating 800A.why?

0 Answers  

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Can you explain about TEE protection scheme?

0 Answers   Voltech,

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IS THE ANY DIFFERENCE B/W GENERATORS & ALTERNATORS

6 Answers  

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what is v/f control in VFD?

0 Answers  

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hi i have applied for lic of india south cenrtal zonal ,hyd. i didnt get hall ticket till now.let me know how can i get form internet

0 Answers  

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what is the purpose of %impedance for transformer

3 Answers  

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in CNC reference how to take? what kind of input give to the servo amplifier?

1 Answers  

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physical identification of HT & LT panel

0 Answers   Schneider,

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I have an 15A fuse MCB that controls a night storage heater. It needs replacing and is now obsolete. Is a 16A C curve MCB the correct replacement?

2 Answers  

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how many types of ct retio

3 Answers  

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why we still use sinusoidal waveforms for transmission and utilisation (we know generation is sinusoidal), instead of other ac waveforms such as triangle, sawtooth, square etc.,? is there any mathematical derivations to prove sinusoidal is efficient than others?

1 Answers  

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