WHY HOLDING CONTACTOR OF MOTOR STARTER IS CALLED NO VOLT
COIL.

Answer Posted / jerald xavier

In Motor Starter circuit, The load (Motor) is Normally Open
untill the voltage coil is energised. The working of this
coil is mainly dependent on the voltage, and there is no
importence for current in this coil,hence the name NO
voltage coil.

'N' stands for Normaly, 'O' stands for Open

Is This Answer Correct ?    12 Yes 2 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

How can ou verify the size of conductor 50Sq.mm ACSR

1504


Why have to use copper cable for local isolator to motor ?

1656


Is there any rule to select the voltage of motor based on KW rating? What is the rating above which lt motor becomes the HT motor?.

1231


we have a lot of model of rectifier but thyristor rectifier is the most rectifier that use in power system. Do you know why this rectifier is used?

1327


How PSV sizing being done

1821






what irequirment need to be followed when working on live equipment

1308


why the voltage and current in a long transmission line are called travelling wave?

1782


What is the permissible maximum flux density in transformer core?

729


if i am in front of transmission line how to know that current direction without any equipment

1254


How Can I calculate for the photometrics requirements for a street lighting? Data given are: 45 units of 6 meter light pole with 150 watts metal halide lamp, 220 volts and installed in a promenade area.

1422


How to calculate VCB rating for 33KV ,25 MW Power line?

1235


Pls explan the OLR setting in VCB at HT yard

2173


What is use of starter and choke in tube light

1294


Sir, My doubt on cable sizing calculation, Load:74 KW calculated cable 1 run 50mm2. Now client asking us to reduce cable size by increasing runs. Sir, My question now when my mind strikes with 2 options 1) Divide load 74/2 = 36 and calculate cable for 36+36 making it 2 runs or 2) Simply i can divide 50mm2 /2 ie. 2 runs of 25mm2 Please suggest me sir

1429


I am inpecting a 10kVA UPS what tests should i do and should i observe?

1799