what is the working principle of contactor and conditions of
normal open and normal close on it?
Answers were Sorted based on User's Feedback
Answer / abhilav vishwakarma
A contactor works on the principle of Electro-magnetism. IT
comes under the category of switch gears and all the switch
gears performs the same function of Switching.
A contactor consists of mainly 2 parts-Fixed and movable
jaws. the fixed jaws are firmly connected with the circuit
and is a provided with a COIL having movable jaw as soon as
current is allowed to flow from the circuit the COIL gets
charged and due to electromagnetic effect it attracts the
movable metal jaw, thus the circuit is complete with the
CONTACT provided by the movable jaw. this is the
functioning of contactor. When current through the circuit
ceases , coil demagnetises and movable jaw is pulled apart
| Is This Answer Correct ? | 79 Yes | 9 No |
in ring main system we use the isolater b/w transfer bus and main bus if we r not use isolatar than wat will be the effect in our sys.
Is there any Institution for giving M-tech in Electrical engineering for those who r in service? Give the details please.
how to find the transformer effiiency
what use can we make of 3rd harmonic component
5 Answers Bhel, General Motors GM,
How to calculate the sag on transmission Lines.
when transformer in load condition neutral earth testing wheater we can do it or not
Name different types of fault and which instrument is used to measures earth,short,open cicuit fault?
6 Answers NTPC, Vijai Electricals,
what is the difference between ac and electric
if our load is 65000 watts howcan we find out all char like cable size. mcccb etc
what is method for testing CT
how to calculate overall efficiency of diesel generator set? give us a formula with an example.
Pl. share your experience about industrial-electronics repair of machine tool.
Civil Engineering (5086)
Mechanical Engineering (4456)
Electrical Engineering (16639)
Electronics Communications (3918)
Chemical Engineering (1095)
Aeronautical Engineering (239)
Bio Engineering (96)
Metallurgy (361)
Industrial Engineering (259)
Instrumentation (3014)
Automobile Engineering (332)
Mechatronics Engineering (97)
Marine Engineering (124)
Power Plant Engineering (172)
Textile Engineering (575)
Production Engineering (25)
Satellite Systems Engineering (106)
Engineering AllOther (1379)