HOW DO I CALCULATE OVER LOAD RELAY & CONTACTOR IN DOL
STARTER?
& in dol why it is require circuit breaker?

Answer Posted / ermias solomon

in OLrelay 115%*motor name plate current
for contactor use
NEMA table by ermias solomon

Is This Answer Correct ?    1 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

dear sir/madam i want to get some knowledge about RRB EXAMINATION(section engineer) 1- what is minimum cut off 2- wht portion is major portion . 3- can any body provide Sample paper. thanks & regards ashish

1904


What is the formulae of Megger value for a A.C.Motor

2297


What should be the length of transmission line so that we can see/obtain the full sine wave of voltage??

1414


11 kv input, 66 kv input advantages

937


what is the difference between megger and earth resister ??

1339






What is dynamo?How it works and what is the function of dynamo in a DG.

1591


How to determine stage of Automatic Power factor controlling Relay(Apfcr)?

1704


What is T’Q and X’Q and X’D ? and what is saturated as well as unsaturated ?

1291


how many electricity poles are there and what are the names and their sizes.

1434


How to select the earthing transformer,for DELTA TO DELTA TRANSFORMER OR ALTERNATOR SIDE.Pls post your answers and calculation.

1870


what are the reasons of CT circuit faulty in busbar protection scheme?

958


How could a garment factory benefit from renewable energy

2352


Draw the equivalent circuit of crystal oscillator?

769


solor panels arrange some angle,panel is flat fitted energy was produced or not why?

1414


What is s-domain and its significance?

738