what is the difference between relay and a contactor.
- 5 Answers
- 15307 Views
- Siemens, I also Faced
- E-Mail Answers
Answer Posted / arun kumar
Relay:-is the sensing device which detects the foult and
give the command to the ckt breakers to break the ckt.
contactor:- is a switching device which. Is used to large
power ckt.
| Is This Answer Correct ? | 3 Yes | 0 No |
Post New Answer View All Answers
we have require a Motor (1500kW, 6.6kV, 50Hz) which shall operate at 1500rpm during 30min and after it shall run on 500rpm during 15min. The same cycle shall be repetitive during the whole working days. Which method is best and economic to achieve such type of task. VFD, VVFD, Pole changing motor etc.
Is it required to use Automatic transfer Switch in L&T panel board if we use AMF panel with DG set? How the single line diagram will be? Please forward the material to sreenu_207@yahoo.co.in
State The Difference Between Generator And Alternator?
what is cascade speed control device?and how this device control the speed of motors?
What is a dominant pole?
Why the cores of large transformers build up of circular cross section?
What is the use of mc( moving coil) in dc voltmeter and dc ammter and what is the use of ( moving iron)in ac voltmeter nd ac ammeter
why Lightening Arrester Probe sharp at Top of telecom tower.
How to test lightning Arrester?
What is the difference between cylindrical-type and sandwich-type winding?
how brushed dc motor operating ?
HOW TO WORK A VFD?SAY SIMPLE METHOD
What are protections for dty type transformers
A 230V dc shunt wound motor has an armature resistance of 0,15Ω.When operating on no load at 650 rev/min the armature current is 6A . The motor takes a full load current of 85A. Calculate the full load speed if the field flux is (i) maintained constant (ii)reduced by 0,03
witch pump used in wtp
