What is the formula to calculate the rating of a thermal
over load relay
Answer Posted / jayakumar.k
There is no General formula .but the general practice is
motor FLC should be the setting . for e.g 3.7 kw motor the
FLC is 8 amps. we can select the relay 6A-10A range. 8Amps
shoud be the trip setting.
| Is This Answer Correct ? | 25 Yes | 17 No |
Post New Answer View All Answers
How to check 11000/1.732 to 110/1.732 Potentila transformer (PT)?
If the feeder rating is 7.5 kw or 10 HP star-delta feeder, MCCB is taken as 63 a, contactors-32 a, how much will be the OLR rating or which range OLR should be considered when we concern about type-2 coordination?
what is cathodic protection and why it use in industries?
In all analog voltmeters or ammeter showing some small size symbols. as well as a star and in star 2no. digit, resister symbol,and other. what is that's meaning ?
how is working bearing heater?
HOW TO CALCULATE ELECTRICAL, MECHANICAL,& OVERALL EFICIENCY OF GAS ENGINE POWER PLANT
Meaning of ingrace protection for motor.for ex IPXY
What are the advantages and disadvantages of short-pitched winding?
Differentiate between magnetic field and magnetic flux?
why single phase to grd test in HV cable?why not 2 phase at a time?
How to do fabrication , busbar and wiring cost for : 1. LT Panels 2. C& R Panel
I am about to write exam in RRB bangalore for the post of section engineer.please provide me with previous exam questions
How can we calculate the motor frame sizes?
how to introduce yourself
What is the transfer function?