Differentiate between power relay and reverse power relay?

Answer Posted / akash

Power Relay is to control AC contactors with no-nc and Reverse Power Relay is used to trip the system when there is any wrong phase is coming. It is usually used in 3phase motors.

Is This Answer Correct ?    9 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

why transformer ratings in kva? & DG ratings in kva? & Motor ratings in kw/HP?

1116


How to design the NGR Resistance

1622


The ripple frequency in output of fullwave bridge rectifier is a. Half the input b. Twice the input c. Same as input

1815


Define step response?

652


what is charger supervision and control supervision?

1533






how we design a pannel to start 10HP motor with the help of star delta starter?

1750


Explain The Application Of Storage Batteries?

699


1.ZEBRA conductor(large size) 2.KUNDHA conductor( small size ) 3.panther conductor(very small ) 4.lepard conductor (very very small)

2450


For a spring controlled governer the relation F = ar+b (F is the controlling force, r is the radius of rotation a and b are constants), indicates that the governer is

734


dear all i am kumara now current working in electrical designing of control and relay panel i want learn some substaion design then any book are available. pls mention name and authour

1516


what is the use of piston rings in the engine used for a generator...........

1699


what is the benefit of floating our DC source? if i have two floating DC source of which 1 has a ref voltage of -21VDC and the other of -18VDC. can it be connected in parallel to share a common ref voltage? if not, how do i make both sources to be of common ref voltage? tks

1414


HOW CAN YOU CALCULATE PRACTICAL EFFICIENCY OF A ASYNCHRONOUS INDUCTIONMOTOR OF 7.5KW,& MOTOR IS RUNNING WITH AVOLTAGE OF 410 VOLTS,& TAKING CURENT OF 13 AMPS

1438


What is the loss of power of transformer 220kv/33kv,63/80mva of % imp12.05 at 80%load

1401


According to IEC60034-14, When the vibration monitoring system required for motor Bearing. above which KW, it is required? and for what type of bearing the vibration probe is provided.

3699