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

Two bulbs of 100w and 40w respectively connected in series across a 230v supply which bulb will glow bright and why?

735


wat is the current produced in a 5000v megger? when the positive and negetive terminals are touched on our body get s shock?

1579


What are the different circuits in thermal power plant?

816


In HVDC LINE RECTIFIER CONTROL ON CONSTANT CURRENT AND INVERTER CONTROL CONSTANT EXITATION ANGLE CONTROL BUT HOW INVERTER CONTROL CONSTANT CURRENT?

1604


why can we use cosine wave instead of sine in ac supply as both have same rms vale and ripple factor

2157






operation of protection relay watchdog contact?

2046


Draw the wave shape of armature current in a generator subjected to a sudden three phase short- circuit at its terminals. Define various reactance of generator from this wave shape.

1718


DERIVE AN EXPREION FOR MAXIMUM POER TRANSMISSION, WHAT ARE ITS APPLICATIONS.

1718


3- What is the target from Zero Impedance, Single Phase Imp., S/C Imp. and magnetic balance tests?

1509


sir i had plane to do some project with the base of hopkinson test in AC supply its possible

1471


what is metering cum synchronizing panel and how it is used?

4138


what is the efficiency of thyristor

1213


can a 150 kva 3 phase 440v/230V delta-wye step down transformer can be use as step up transfoermer with connected loads at 440v side?

1379


what is upper impedance and lower impedance of a distance relay

1683


If Neutral Grounding Resistor (GR) failed/shorted. Is it repairable.

1235