extremely urgent please, why a fuse is used before
voltmeter but not with a ammeter connected to a CT(current
transformer),thanks in anticipation.

Answer Posted / manan2347

Because during fault condition high transient voltage will occur thia voltage can damage voltmeter that is why we connect fuse across it, while in case of CT metering CT are made up of special core that can get saturated if voltage across its primary is beyond its limit, so no more current will flow during this condition, so there is no need to connect fuse with CT.

Is This Answer Correct ?    0 Yes 2 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

do anyone out there know where to find a compleete list on acronyms/abbreviations used in offshore electric engineering. MCB - Micro Circuit Breaker, MCCB-Mouldes Case Circuit Breaker, ELCB-Earth Lekage Circuit Breaker, ELMCB- etc.....

1564


How can calculate the earthing strip of Copper/GI for rating of 30kV,discharge current 10KA Lightning arrester.

1870


how to calculate the torque of a motor?

1580


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

1081


in dc shunt motor if field winding is shorted then

1367






brief notes on ammeters

1532


What are dependent sources?

662


what exactly commisioning work does in electrical site work... LT side?..

1500


What is synchro?

657


How to checked frequency drive output voltages?

692


why the rotor current becomes in steady state during high slip region? please verify with equations.

1561


high voltage transformer input voltage,current and amps rating..distributed transformer input voltage,current and amps rating...

1536


what is meant by brushed alternator & its working principle ?

1546


Has someone here done a sizing for a generator (3 phase), its for a pumping station. If you have an example for standby/duty and both running (I) star delta (ii) Soft Starter.

1616


Between educational qualification and practical work experience, give us a brief explanation on your practical experience in your past Endeavour that you performed well to the satisfaction of your past or present employer?

1789