A 150KW 440V motor is need to replace in the field instead
of faulty one. what are the main parameter should I need to
check?

Answer Posted / a.p.nanjappa

150kw , 440 is a large motr. the starting current of this
induction motor will be 5-8 times depend on drive ex-fan.
and coast for 6-8s to attain full speed.
so, the new contactor shall be good quality , with
overload,instantaneous with time delay shall be selected.
Reverse rotation protection, vibrations,
Unbalnced current protection optional.
LV power cable terminal box cable connection and support.

Is This Answer Correct ?    0 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

I have 4 busbar of 1000 ampere. we use 4 busbar to make 4000 ampere in one phase.my problem is that when we applied 60% load on that then busbar produced high noise.what is the reason of that and how can i minimize that noise.

1278


sourse is 66 KV / 350 MVA, transfarmer is 1000 KVA 6.6 / 0.415 kv, iF fault is 28.75 MVA on 0.415 KV Bus then calculat the Transfarmer Impidance

1636


How to size Air Circuit breaker (ACB)? What is the most important factors?

1769


How to define Kirchhoff current law and voltage law along with simply examples.

1206


How vfd saving power.

1522






my b-tech percentage is 50%. what answer will satisfy the hr ?

1615


When semiconductor fuse does save thyristor in each cycle of conduction? Why under voltage setting keep less in SPRS and more in DC drive?

1625


Can you any one explain application of buccholz relay operation and pressure relif device operation of power transformer

1429


What will be the voltage regulation of a full load and 0.80 power factor lagging load transformer when a two winding single phase transformer has a voltage regulation of 4.5% at full load and unity power factor?

731


How the frame size of a flange mounted AC induction motor is calculated?

1507


what will happen if i connect 12 volt battery with 24 volt battery charger.

1447


What is the restart inhabit setting in ABB spam150c relay (Motor protection relay)

3023


hi this is hema can anyone mail me previous years questions for the APPSC-A.E.E (in electrical stream.) ......thank u.

1450


Advantage of LT panel vs HT panel

2339


what is the difference between interconnection and intraconnections in the circuit diagrams

7550