What is difference between VCB and SF6 breaker

Answer Posted / vidya sagar reddy

In VCB the arc quenching media is Vaccume. We can use up to 33KV. SF 6 arc quenching media is Sulfur hexa fluoride gas. Which is very effective comparing with VCB. Available only above 33KV.

Is This Answer Correct ?    4 Yes 2 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

what is the excess air in furnace

1592


How grounding is different than earthings?

715


What is the capacity of the Fastners 12mm?

1896


1. What is maximum permissible distance between smoke detectors ? 2. How do we decide number of smoke detectors required in a large office, warehouse, hall etc ? 3. What should be maximum height of smoke detectors ? 4. Where do we use heat detector, optical smoke detector, temperature sensitive detector ?

2379


I WANT YHE TECHNICAL AND ELECTRICAL SPECIFICATIONS OF 2x4MW 11KV 2x10MW 11KV 2x25MW 11KV 2x100MW 11KV HYDEL POWER PLANT i.e PROTECTION SYSTEM,MONITORING,CONTROL SYSTEM,GENERATION,SYNCHRONISATION,METERING PLEASE SEND THE DETAILS TO MY MAIL ID SPRAVEEN_222@YAHOO.CO.IN

1655






What is rotating magnetic field?Discuss elaborately.

2147


A motor running with lenze frequiency inverter stops if I REDUCE SPEED with 25% load.If I run it in High speed and medium speed running smoothly with full load.please help me to solve it.

1520


diameter of cable and core is doubled then the value of capacitance is

3696


What is open loop and control loop systems?

689


can I improve the furnace power factor (10 mva transformer) by adding a capacitor bank before the transformer.Does system power factor vary a lot with the furnace PF?

1558


In general bus riser follows the bus section in SWGR. What are impacts if bus section follows bus riser?

1079


Why 1/3 is used in symmetrical components?

1382


what is the safty of poly phase tranformer?

1637


What is the HVDC Transmission System? What are the conditions applicable to lay an HVDC Line?

1860


What is EHT tariff or Power factor Tariff ????

1905