Answer / thowsif_emerson

Hi,

Normaly the motors will design for 4 Poles:-

W.K. That N=120f/P

If the motor is designed to operate on 60HZ its speed will
be 1800RPM,

If you operate the same motor on 50Hz Supply,then its speed
will reduced to 1500 RPM...

Answer / baskaran.r

when operating 50 hz the important change is voltage. we are
to make V/F as constant ie voltage /frequency equal there
fore to operate the motor in 50 hz we have to reduce the
voltage per v/f calculation. if operated with same voltage
the flex will saturate and motor will take high amps and
burn the speed will reduce to 1500 as stated.

Answer / tareq harb

simply it will run on speed lower than rated speed of
course if there is no under speed protection installed, if
so it will not work.

Answer / taufic

Motor will run on low speed compared with 60hz frequency.

Normaly the motors will design for 4 Poles:-


Speed of Motor =120f/P

If the motor is designed to operate on 60HZ its speed will
be 1800RPM,

If you operate the same motor on 50Hz Supply,then its speed
will reduced to 1500 RPM...

Answer / parth rawal

if motor designed at 60hz & operated on 50hz then the required
output which is desired will not get poor efficiency & regulation speed will increses

Answer / nagaraju chikkala

If we operate like this, we can't get designed torque becoz v/hz ratio will be more than design v/hz ratio.
If we want to operate with 50 hz, we need to reduce the voltage as design v/hz ratio.

Answer / plani swamy_kptcl

Hi Baskaran.r!

Dnt give such dumy answers>>>>>>>>.

Answer / virendra

Simple motor speed will be reduced.

How many types of relay are present in a VCB and ACB, what are the tests we can conduct on both breakers and how to set the relays values

2 Answers   Hyundai, Sodexo,

HOW TO CALCULATE HV TEST VOLTAGE FOR ELECTRICAL EQPT.

0 Answers  

Sir we have 12.5 MVA(110/11KV) transformer (Y-Y) connected,which tripped showing earth fault,when we charged transformer it stood OK ,but on connecting 11 KV feeders it tripped showing earth fault.our service engineers found that the B phase and R phase phase connecting to neutral broken from HV OLTC(on load tap changer),and R phase and Neutral is ok.Dissolved gas analysis shows that accetline content is high,tan delta value is 12.My dout is it is an internal fault of transformer,why REF or diffrential relay is not acted?

1 Answers  

what is the difference between Resin Cast CT and Oil cooled CT?

1 Answers  

Can we connect two CT'S to one energymeter?

1 Answers   KSEB,

Why r u using pf panel. what the uses

0 Answers   Standard Chartered,

why the autotransformer burnt while stating the pumpmotor?, In starter and motor there was no abnormality.

4 Answers  

What will happen when more than one star neutral points at same voltage level are connected to earth by metallic conductor?

1 Answers   TCS,

I have 3KVA Libert GTX2 UPS. I need to calculate the back up time with some load. How to calculate the Back time. I need the expert guide

1 Answers  

what is ripple ??? what is harmonics ?

3 Answers   ABB,

What is the formula that shows relationship between voltage and speed in an induction motor

2 Answers  

is the value of inductance depends upon the value of thitha in doubly excited machine??

0 Answers