Answer / vaibhav

yes we can drive the 50Hz motor on 100Hz by using variable frequency . and as we know that synchronous speed =120*f/p.
as frequency increase motor speed also increase. and also if frequency increase motor size also can be decrease in design if want to decrease

Answer / zenat

it will effect the motor speed,everything will run
(100-50)*100/50=100% faster than normal speed...which may
damage the motor.

Answer / clinton

If you are using a inverter on a 50Hz motor.
At 50Hz the VSD is usually outputing 400V
If the motor is connected in star the volage across each
coil is 230V at 50Hz. The motor will run with designed
magnetising current therefore can produce the correct
torque, then the load is increase. If we continue in
frequence, the magnetising current is lower, and therefore
the motor will loose torque.
Connect the motor in delta and change the settings to 415V
at 100Hz and the same magnetising curve is produced.
Therefore the motor will not stall due to lower torque
charactistics.

what is active network?

2 Answers  

---

How can calculate ups battery back up time?

25 Answers   Cisco, Cooper, Pronet, Wipro,

---

what is the effect of change in supply frequency on load angle of synchronous motor,all other parameters remaining same?

0 Answers  

---

What is the difference between online and offline UPS

1 Answers  

---

A 100W electric lamp is supplied from a 115V, 60HZ source. The peak instantaneous power dissipated in the lamp filament is

0 Answers  

---

megger generates D.C. voltage while earth tester generates A.C.voltage is it true? I know for megger it is D.C generator but what about earth tester?

4 Answers   IOCL,

---

HOW DEFINE THE IP FOR ELECTRICAL EQUIPMENT AND WHAT IS THE IP OF PANELS USING IN HAZARDOUS AREA ?

2 Answers  

---

why we use RYB phase sequence? and somewhere we use UVW ? why?

6 Answers   CSPDCL-Chhattisgarh State Power Distribution Company Limited, MUET, TCS,

---

Can we use BS 6651 and BS EN 62305 standards for computer room lightning ptotection in substation?

0 Answers   Jindal,

---

Whag is the PS class of accuracy of CT?

3 Answers  

---

what is inter connected dc generator?

0 Answers   Lovely Professional University,

---

What is the name of the winding to which supply is given?

0 Answers  

---