what is the difference b/w circuit breakers and relays?

Answer Posted / inderpal

Circuit Breaker is a protection device which can intrupt
the fault current, CB has high fault level with-stand
capacity (kA). Relays are also used in protection circuit
but relays cannot with-stand high fault levels. Relays are
generally used as sensing element to open the circuit
breakers.

Is This Answer Correct ?    16 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

what is transient stability analysis means?

1661


What aturn on methods of scr?

699


what is the current density of copper & alluminium.

1496


ASTM D 3455 - Standard Test Methods for Compatibility of Construction Material with Electrical Insulating Oil of Petroleum Origin has been used for Testing Transformer Oils with a product placed in it. Aged Control Oil has a Power Factor of 0.032% at 100°C. Aged Oil with a Test component has a Power Factor of 0.093% at 100°. Is this increase acceptable? If not why? How much increase is acceptable?

1506


Name two low frequency oscillators?

894






Explain how to determine capacitor tolerance codes?

615


sir vizag steel ka junior trainee ka paper kitne number ka ayega

1758


What is the diff. between single compression and double compression gland

1512


what is the minimum clearance between a 11KV 150KVAR capacitor cell and series reactor.can a series reactor can be mounted in the same structure of the capacitor cells structure

1727


WHAT IS MEANT BY OVER EXCITATION IN GENERATOR TRANSFORMERS? DESCRIBE IT.

2158


why in an industry; machine having rated 200 h.p stopped after power factor is maintained above 0.97 lag by control panel in view-of energy saving

1583


IN MY SYSTEM THERE IS ONLY OVER CURRENT EARTH FAULT RELAY IS AVAILABLE. FOR THE UNBALANCE SENSING IS THERE ANY RELAY IS AVAILABLE? THE SAME CTs WHICH ARE USED FOR THE OVER CURRENT EARTH FAULT RELAY CAN USE FOR UNBALANCE ALSO?

3179


i have applied for the post of RRB section engineering chennai board please send me previou papers and solved answer. my mail id jagarapusrinivas@gmail.com

1474


how a flip flop can be used as a latch?

1540


How to Calculate KA Rating of Main LT Panel

1162