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Varible frequency Drive on Wet rotor Pump
- Thread starter reymen
- Start date
thewellguy
Electrical
I'm familar with that model number, however I know that Grundfos is putting out their own VFD. Check their web site
ozmosis
Electrical
- Oct 12, 2003
- 1,794
reymen
Be careful if you are going to fit a VFD onto the Grundfos pump. The insulation class of the motors are typically not suitable for fitting a VFD directly onto the motor without fitting some type of sinusoidal filter between VFD and motor. Basic dv/dt filters are often not always suitable as the voltage stresses still impact the GF pump motor and I think therefore that GF will actually recommend a sinusoidal filter to ensure as close as possible a voltage sinewave.
Be careful if you are going to fit a VFD onto the Grundfos pump. The insulation class of the motors are typically not suitable for fitting a VFD directly onto the motor without fitting some type of sinusoidal filter between VFD and motor. Basic dv/dt filters are often not always suitable as the voltage stresses still impact the GF pump motor and I think therefore that GF will actually recommend a sinusoidal filter to ensure as close as possible a voltage sinewave.
thewellguy
Electrical
Just courious, I looked in the catalogs that i have and couldn't find that model. What is a UPS-5-_240 used for?
- Thread starter
- #6
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