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Running 50Hz pump motor on 60Hz
Tags: 50Hz vs 60Hz
Motor will not have enough flux to develop torque which will be developed at 50Hz if voltage remains the same as of 50Hz. In order to maintain same performance V/Hz ratio be maintained constant. If V/Hz ration maintained constant then HP must be reduced accordingly (20%) to keep losses and temperature of motor be same.
I had a 2hp pump that was suitable for both frequencies. The frequency in Mexico changed in the early 70s from 50 Hz to 60 Hz. Some motors were dual frequency. All you need to worry about is the V/Hz ratio. 460V @ 60 Hz = 380V @ 50 Hz, and it works both ways. The motor is insulated for 600V and will be happy. Don't let the naysayers scare you.
You can use 50Hz instead of 60Hz, here in my country the frequency is 60Hz and is very common that IEC (50Hz) motors work here without troubles. IEC motor frequency has been made oversize so the flux, warm or other factors in DOL will not be affected. Probably for a smaller motor it's yes. A larger one might not be able to handle the mechanical and electrical stresses at 60Hz.
You must consider the additional speed and make sure you do not exceed the HP/current rating. With a variable torque pump the load could go up by as much as 72% (60/50^3) rpm will change, for example at 60 Hertz will produce 3600 rpm,1800 rpm, 1200 rpm, 900 rpm. The number of poles is always in pairs. at 50 hertz, 3000 rpm, 1500 rpm, so on.
NEMA tolerances for the nominal voltage without damage to the motor is +- 10%, frequency is 5+_ %.verify against the standards because had a vendor, not NEMA, years ago told us motors had good or better than NEMA but the LR with stand was ten seconds in lieu of 20 seconds as required by NEMA for SC Induction. The changes in RPM will change pumping characteristics. The NEMA standards apply if the frequency is a constant 60Hz and the voltage varies or if the voltage remains constant and the frequency changes. In other words if the V/Hz ratio changes.
If we change both Volt and Hz together (the way a variable frequency drive does) and maintain the V/Hz ratio the motor is satisfied. If we have oddball voltages it's a different ballgame. As we said, the pump will turn faster and that may be a problem. I'd surely try it before I bought a new motor.
I had a 2hp pump that was suitable for both frequencies. The frequency in Mexico changed in the early 70s from 50 Hz to 60 Hz. Some motors were dual frequency. All you need to worry about is the V/Hz ratio. 460V @ 60 Hz = 380V @ 50 Hz, and it works both ways. The motor is insulated for 600V and will be happy. Don't let the naysayers scare you.
You can use 50Hz instead of 60Hz, here in my country the frequency is 60Hz and is very common that IEC (50Hz) motors work here without troubles. IEC motor frequency has been made oversize so the flux, warm or other factors in DOL will not be affected. Probably for a smaller motor it's yes. A larger one might not be able to handle the mechanical and electrical stresses at 60Hz.
You must consider the additional speed and make sure you do not exceed the HP/current rating. With a variable torque pump the load could go up by as much as 72% (60/50^3) rpm will change, for example at 60 Hertz will produce 3600 rpm,1800 rpm, 1200 rpm, 900 rpm. The number of poles is always in pairs. at 50 hertz, 3000 rpm, 1500 rpm, so on.
NEMA tolerances for the nominal voltage without damage to the motor is +- 10%, frequency is 5+_ %.verify against the standards because had a vendor, not NEMA, years ago told us motors had good or better than NEMA but the LR with stand was ten seconds in lieu of 20 seconds as required by NEMA for SC Induction. The changes in RPM will change pumping characteristics. The NEMA standards apply if the frequency is a constant 60Hz and the voltage varies or if the voltage remains constant and the frequency changes. In other words if the V/Hz ratio changes.
If we change both Volt and Hz together (the way a variable frequency drive does) and maintain the V/Hz ratio the motor is satisfied. If we have oddball voltages it's a different ballgame. As we said, the pump will turn faster and that may be a problem. I'd surely try it before I bought a new motor.
If I have a pump with 10 hp/460V/60hz, with a flow of 30 gpm, running at 380V/50hz, no problem, but the flow will be lower, Should I increase the electric motor hp to obtain the flow to 30gpm?
will a 50 hz submersible pump, 220v, single phase, work on 220v, 60 hz ???
convert 380V 3phase motor into 60hz with same voltage and phase
50Hz 60Hz Frequency Converter Setting
Using GoHz frequency converter to
Or customize your own converters.
- Convert 220v 50Hz to 110v 60Hz,
- Convert 120v 60Hz to 230v 50Hz,
- Convert 110v 60Hz to 240v 50Hz,
- Convert 480v 60Hz to 380v 50Hz,
- Convert 400v 50Hz to 460v 60Hz,
- Convert 240v 60Hz to 380v 50Hz,
Or customize your own converters.
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