What is the difference between Isolator annd Circuit
Breaker.

Answer Posted / senthil kumar

isolator is a off load device ie we cant able to close the
isolator under onload condition if we close the isolator
under onload it will damage the isolator but breaker is a
device having high withstand capacity(the withstand
capacity is based on application)so we can able to open
&close the breaker under both onload &offload
conditions......and also while opening &closing under
onload arc will appears at the contacts. the isolator have
no special arrangement to extinguish that arc but in
breaker we have some special arrangement to extinguish that
arc.

Is This Answer Correct ?    42 Yes 11 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

WHAT ARE THE DISADTAGES OF SINGLE-WIRE-EARTH-RETURN SYSTEM USED FOR RURAL ELECTRIFICATION?

1494


If I bring a basic electric meter from the States and hook it up in Costa Rica in a development that has only one transformer for the 50 homes, will it still be accurate regarding the usage of kilowatt hours?

1504


What is the disadventage of gland earthing(power cable) if any. ?

1583


How we calculate the size of ht cable for any transformer

1564


How much inductance or resistance require as a starter in series with induction motor of specific capacity(e.g. 5 hp) ? What is formula for it ?

1504






How do I calculate a WTI CT ofa 1250kVA 6600/400V transformer

1317


2. Modify your design in question 1.a so that the circuit works according to the following function table X Y F 0 0 Clear 0 1 No Change 1 0 Parallel Loading 1 1 Count 3. Design a circuit that detects the pattern 010 in a serial input X considering: 3.a Overlapping 3.b No overlapping

1461


I Need standard operation procedure(SOP)for 500kva Oil type transformer oil filtration & Procedure for IR value checking.

2387


132/66kv sub-station procation ?

1726


What are high pass filter and low pass filter? and What are the flowmeter ?

1517


What is the formula to calculate the rating of power cable for three phase current.

1672


What is the size of a 60 watt and 80 watt tubelight?

1758


what transformer we used normally and upto which kva?

1497


why we dont prefer ac voltage controller instead dimmerstat [if both have same rating] for conducting experiments in laboratories?

1706


what is JE exam?

1712