What type of protective system we uses in L.V. distribution
panels?

Answer Posted / jagadisha.n bmsit

Different protection systems which is used in LV panels are:
1. Short circuit protection :- It is done by choosing set
point in sc protection relay which is present inside the CB's.

2. Thermal protection for Busbars/ cables:- Bec extreme
thermal point cause flash over

3. Over current protection

4.Protection provided by proper shielding & interlocks such
that operator & maintenance people can not accesses live parts

Is This Answer Correct ?    1 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

how cables go in and come out for distribution from the feeder pillar box?

1600


how to CHECK CT AND PT AT THE FAULT OCCUR IN GENERATOR RELAY PANEL .

1748


For a stable system, where should the poles of a system be in a root loci plot?

731


During Starter Panel Com missing I Found The Main Incomer 40Amp MCB 10KA Trip When Motor Change Star To Delta Motor Rating 20HP BUT When We Use Same MCB To Other Motor It Does Not trip Or What Is Necessaries for Star Delta Starter MCB SFU MPCB OR MCCB And What are The Breaking Capacity of MCCB in the Motor above 15HP

1411


how can I calculate charging current of cable/overhead conductor? what is roll of voltage in it ?

3231






write encoder 17 pins details? pin a;b+, pin b;w+,..pin s & t. what is the meaning of b+, w+? explain;

1696


What is the basis for framing the rules of block diagram reduction technique?

972


when we have to use UPF wattmeter and LPF wattmeter? what is the difference between UPF and LPF wattmeter in terms of construction?

1929


what id a dry type transformers and its function ?

1348


WHAT IS DIFFERENCE BETWEEN MANUAL CONTROL AND MAGNETIC CONTROL AND STATE ITS ADVANTAGE /DISADVANTAGE

1581


I would like to know that the fault curretn at base load and at 10% generation will be same? Fault level of BUS remain same with different generation?

1395


What is superposition theorem?

706


How to measure power in 2 or 4 or n phase circuit? Please give me a formula.

1465


give me a clear defination of inductance,and how can u calculate inductance of a motor

2324


what is the purpose of shading ring or shading coil in electrical equipments.

3964