Interested to Buy Any Domain ? << Click Here >> for more details...
what is the main difference b/w contactor and relay
- 2 Answers
- 5607 Views
- Pace Pharmaceuticals, I also Faced
- E-Mail Answers
Answer Posted / amit rajak
contactor- it is simply a switch or combination of switch
which is used to open or closed the circuit having
different phase wire in single phase circuit or three phase
circuit by automatic that is by pneumatic ( by air ) or
also manually.
relay -it is a protecting device that is used to protect
the circuit from faults.
it is basically a sensor which senses the fault in
electrical circuit having different parameters .it ihas a
predetermined set parameter which makes comparision under
fault condition and provides the initial signal to the
circuit breaker which fif finds the parameter more than
the predetermined magnitude or value it trips the circuit
examples of relays are:
1).electromagnetic relays
2).thermal relays
3).induction relays
4).differential relays
5).distace relays
few modification are used in these relays to suite certain
operation.
| Is This Answer Correct ? | 9 Yes | 0 No |
Post New Answer View All Answers
how a.c. genarator control power factor when its conected to grid supply by incrising or decresing excitation voltage.
how we select ac fuse rating of an power inverter???
What is resistance reading of earth copper rod with grid and without grid?
relation between power station capacity and voltage level?
How do i perform grounding of star point of Genset (400V) for making connection with step up transformer of DELTA-DELTA (400V to 20KV) ? while Genset itself has its own neutral and grounding bus bar inside genset breaker box whereas we have another neutral and grounding busbar in synchronizing panel next to genset at maximum distance of 6meter, would someone pls advice if we can only perform neutral grounding in synchronizing panel or should we ground neutral on both places inside genset breaker box and synchronizing panel.
Why the unit sizes of hydro generating machines are not standardized as in case of thermal powerplants?
how does a submersible pump work..?
if you are in a software company,then why do you want to come in a core company like sail, ntpc(where lots of trouble like tension but you have a good life in a it company) ?
Stator of 3-phase IM has 3 slots per pole per phase. If supply frequency is 50 Hz, calculate the speed of rotating stator flux A 1000 rpm B 500 rpm C 1500 rpm D 1440 rpm
What is a single phase autotransformer?
what shall be no load voltage of 132/33 kV transformer ? is it 33 kv of 34.5 kV
We are preparing another project which involves Waste heat recovery from a 1 MW GE Engine. The Engine in particular gives out flue gas at 487Deg C with a flow rate of 5650 kg/hour and this can be cooled to 180 Deg C. This gives a thermal output of ~ 594 KW that is available for input to VAM via heat exchanger / boiler. Additionally 581 KW will be available from engine jacket water (temperature profile 80/ 80 Deg C and a flow rate of 50m3/hr) Our estimation is that 300 TR of cooling is possible with a suitable VAM machine(s). Please advise what is the most suitable arrangement with maximum TR and min Capital expenditure. plz reply me as early as possible
Do Phase angle measurement have any application in freq/harmonics measurement? If so how?
why do we have spikes enough to burn electronic boards, when generators are not grounded
What is size 00, 01, 1 etc., in HRC fuse types?
