WHAT DO U MEAN BY THERMAL OVER LOAD RELAY& WHERE THEY ARE BUSED

WHAT DO U MEAN BY THERMAL OVER LOAD RELAY& WHERE THEY ARE
BUSED

Question Posted / kamal

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WHAT DO U MEAN BY THERMAL OVER LOAD RELAY& WHERE THEY ARE BUSED..

Answer / suresh

on bimetalik strips will be bend one side when heat
devloped and it will be orderd to break the control ckt

its used in motor staters

Is This Answer Correct ?

18 Yes

2 No

WHAT DO U MEAN BY THERMAL OVER LOAD RELAY& WHERE THEY ARE BUSED..

Answer / senthilkumar

What Mr.Suresh mentioned is correct. Only thing is
bimetalik strip starts bend only the load current exceeds
OLR set value.

Is This Answer Correct ?

7 Yes

1 No

WHAT DO U MEAN BY THERMAL OVER LOAD RELAY& WHERE THEY ARE BUSED..

Answer / venkatesan.j

Thermal over load relay consists of bimetallic strip made
up of two metals one having high co-efficient of expansion
and the other metal having low co -efficient of
expansion ,such that when heated up the strip starts
bending . The soource of heat is provided by the load
current in the strip.

Is This Answer Correct ?

3 Yes

0 No

WHAT DO U MEAN BY THERMAL OVER LOAD RELAY& WHERE THEY ARE BUSED..

Answer / ajmal

1.thermal over load relay used in star delta starter
application
2. according to motor kw we need to provide thermal over
load relay, suppose suppose the motor ampere exceed from
normal one the over load will trip, it must be matching
with motor kw

Is This Answer Correct ?

0 Yes

4 No

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