Answer / chandrashekar

switchgear is the apparatus for closing & breaking the
operation of live conducotrs to disconnect for maintenece
or operation

Answer / tareq harb

switchgear is simply a protected bus bar against short ckt,
earth fault, overcurrent & under frequency.
Moreover you can monitor Voltage, current, frequency, pf,
KVARs & kw locally & remotely.
bypassing advantage in the switchgear which means
transferring one feeder load to another breaker on the same
switch gear in case of that feeder breaker failure.

Answer / girish

Switchgears are the safety devices, which initiates the
operation of Circuit breaker..mean switch gears are
initiates the CB's operationssssssssss..

Answer / aman rana

switchgear is a combination of ct,pt,circuit breaker & relays. it is used to break the load under normal & abnormal condition. in the switchgear ct will sense the fault current & relay calculate the type of fault & give comand to circuit breaker for trip the circuit .

Answer / pedro compo

Swichgear is a devices or relays to command open and close the ACB. Including protection of earth leakage, under voltage/over voltage many other safety measures.

Answer / farhan ali

Switchgear is that device which having the features like
fuse, circuit barker, relay, it is immediately solve the
problem which occur on a line.
by v.k mehta
from pakistan

Answer / glenn mendoza

Switchgear is a device or aparatus to connect incoming power source to busbars, close and open the ACB.. built in CT,PT and aux. Devices for monitoring the voltage,amps,pf,kwh,mvar. And have safety device for earth leakage,under/over voltage, over/ current trip.

Answer / dhaval

Can you use relay replaced the switchgear?

Answer / c.kishore kumar

switch gear is nothing but a safety device, which is used to
command the circuit breaker for opening and closing under
abnormal condition

In India which type of PLCC IS used?

2 Answers   Cipla, Ford, Jayashree,

why it is important to earth neutral of 3 phase transformer?

9 Answers   IBM, ITC Indian Tobacco Company, RRB, UDS,

one kva is equal to how much amps?

14 Answers  

what is vcb & working principal

4 Answers   JLL,

What is ELR, and where it is used ?

7 Answers   KSEB,

what is meant by motor protection relay & its working principle ?k

1 Answers   Pricol,

how to calculate voltage drop and followed by cable calculation?is there avail in formula?

0 Answers  

A 50Hz,4-pole,3-phase,star-connected synchronous motor has a synchronous reactance of 12ohmsper phase and negligible armature resistances.the excitation is such as to give an open-circuit voltage of 13.2kilovolt.the motor is connected to 115kilovolt, 50hertz supplying. what maximum load can be the motor torque,line current and power factor?

0 Answers  

1. What is differential relay? How it operates? 2.How to calculate the Short Circuit Impedance in Transformer? 3.What is the alternate solution for testing of polarity by using polarity tester while its milli ammeter does not works? 4. While testing the 33KV Busbar by using Hipot kit, what should be the test voltage we have to apply? 5. What is the procedure/activities to be taken to inject the current more than 2000A by using 2000A Loading Transformer? 6. Explain how you can give the overload setting to any Motor Protection Relay for a HT motors with formula and example? 7. Why restricted earth fault protection is needed? Why can’t differential Protection is sufficient? 8. What should be the minimum and maximum ohmic value for earthing? 9. Why DC Currents are not used in transformer? 10. What is the Frequency while we step up the voltage from 220V to 11KV? Is it possible? Explain it?

0 Answers  

what is closing resistor in circuit breaker? why it used?

3 Answers  

What is the reason for using a GE G101 MCB in place of an EP102 MCB if both are capable of AC circuit protection?

0 Answers  

In case of 3Phase Supply, Voltage R-Earth/Neutral - 220 Y-Earth/Neutral - 220 Z-Earth/Neutral - 220 Total is -> 660Volts Then Why it is said that 3Phase supply is 440

6 Answers   Hindustan Unilever Limited,