what is the operating principle of contactor(power).along
with disection?

Answer Posted / ashirbad behera

its an electrical device used for supplying controlled
power supply to electrical equipment along with some other
auxilary contact i.e. NO/NC.or simply u can say its a
distant switching device.it has one magnetic coil,when ever
we give control supply to its coil its get energised &
pulls up main contact for supply leads to make electrical
ckt.again we remove control supply to its coil its de-
energise to release contact.

Is This Answer Correct ?    24 Yes 9 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

what is the isolation transformer. what is the isolator?

1600


how to control the speed to switched reluctance motor

1481


how to find ratio of CT & PT in 66/11kv 12 mva supply system ? explain with calculation.

1875


What is the technical difference between On delay timer and a Star delta timer?

943


What are test signals and their significance?

627






What is a surge supressor why its is used in synchronous generators

1528


Define ampere

707


WHAT SHOULD BE THE BEST CURRENT RATINGS (PRIMARY / SECONDARY)FOR A CT INSTALLED AT THE INCOMING 11KV PANE? WILL IT BE CALCULATED ON THE BASES OF MAXIMUM DEMANT VALUE OR ON SUM OF ALL TRANSFORMER'S KVA? NOMALLY MAX DEMAND REPRESENT THE MAXIMUM OPERATING LOAD OF THE PLANT AND TOTAL KVA OF (SAY 5 NUMBERS TRANSFORMERS) REPRESENT THE CONNECTED LOAD. WHICH i.e. MAX DEMAND KVA OR CONNECTED KVA ARE BETTER TO USE FOR CT CURRENT CALCULATION? PLEASE ANSWER.

1433


What are the basic properties of signal flow graph?

681


What is the difference between vector surge relay (78) and Pole slip relay (98G)

641


hi friends ,iam working as genset AVR service engineer in electrical field from past 2 yrs throughout india . i plan to shift in some other job without travelling in same field because i con't travel,i dont know what i do for that so please guide me what job is suited for me,how i can serch the job please anybody helpme iam totally confused

1542


how many types control panel of a 132/33 kv substation

2224


How does an induction motor start?

733


Why should we hire you over the others waiting to be interview?

2352


What are the causes of having an rmu explode after installation? And how do u treat the bushings of an rmu?

1926