What is the reason behind choosing 50 60 Hz and not above?
The reason lies mainly with having a widely-accepted standard and sticking with it. The main difference is that with higher frequency, induction motors and generators of the same size will run faster and thus have a higher output (60/50 = 120% higher).
Why do we use 50Hz frequency?
At that time, Motors are invented and scientists found that if we decrease the frequency of the electric supply, the eddy-current loss and hysteresis loss will gradually decrease. Therefore, the scientists decided to use 50 Hz instead of 60 Hz to reduce those losses.
Why is a 50 Hz current hazardous?
What is important is the voltage (and the source impedance). A 230v 50Hz supply with a moderate to low source impedance is dangerous as it can drive enough electricity through your body to disrupt the heart rhythm.
What does 60 Hz do to oxygen?
A 60 Hz uniform electromagnetic field promotes human cell proliferation by decreasing intracellular reactive oxygen species levels.
Can you connect 230V 50Hz to 220v 60Hz?
No. In fact you can not even connect two 230 V 50Hz together unless they are in phase synchronisation. Try connecting two phases of a three phase supply together to power a common load and see what happens.
Is 50Hz better than 60Hz?
The primary difference between 50 Hz (Hertz) and 60 Hz (Hertz) is simply that 60 Hz is 20% higher in frequency. Lower the frequency, speed of induction motor and generator will be lower. For example with 50 Hz, generator will be running at 3,000 RPM against 3,600 RPM with 60 Hz.
Can we run 60Hz motor with 50Hz?
For a generic answer: yes you can, IF: you reduce the voltage by 50/60, the equipment doesn’t care, you don’t care about potentially overheating the motor, the process/load can tolerate the lower speed/torque, etc.
Can a 50Hz motor run at 60Hz?
It will run with following problems for a 50Hz motor running on 60Hz: The core loss will increase and cause over heating of core. The motor speed will be higher, so shaft load will increase. Motor will be overloaded at rated load.
How do you convert to Hz?
In this context, when angular velocity is measured in radians per second, it can be converted directly to hertz by multiplying by a factor of 2π, which is the number of radians in a circle. In other words, since there are 2π radians in a circle, one radian per second is equal to 1/2π Hz = 0.1592 Hz.
What is V Hz ratio?
Volts per hertz ratio The output torque for a motor is determined on the basis of the ratio of the motor’s applied voltage and applied frequency, known as the volts per hertz (V/Hz) ratio. A typical AC motor manufactured for use in the U.S. is rated for 460 VAC and 60Hz, and thus has a 7.67 V/Hz ratio.
What is V Hz protection?
Volt/Hz protection is also called over fluxing. which meant to exceed excitation over requirement at that speed. Have you noticed that Field breaker is only applied at speed > 90% of rated speed, just to avoid operation of Volt/Hz. This over fluxing may cause heating core.
What is VF ratio in VFD?
V/f Ratio Constant in VFD If AC voltage is applied to stator of the induction motor, the flux is generated. Thus the flux generated in the stator depends on the ratio of the volt/Hz. In VFD motor, speed is controlled by changing the frequency, as the speed of the motor is proportional to the frequency.