Recently, I was involved in a problem with peak intensity at startup of a
water pump. This pump was pulling over 50 Amps on 120 Vac/ 1 phase supply.
To lower the surge, I was wired with the 220 Volts windings. OK, we now
pull about 25 Amps and run at about 6 Amps. To even further reduce this peak, we want to install a
Softstarter and we have found the Sqaure D Model # LH4N112LU7.
It looks OK to me BUT...
A friend told me about single phase motor not being able to be soft-started
because the all pumps have starting capacitors which will not permit it. He
says that I will not be able to make any movement under 30 Hz and that at
some point in time, the motor will most certainly melt...
Can anyone teach me a little lesson or two on those single phase motors and pumps?
If we where to control this motor with a VFD, would we have to set the min Freq. at above 30 Hz?
Tanks in advance.
water pump. This pump was pulling over 50 Amps on 120 Vac/ 1 phase supply.
To lower the surge, I was wired with the 220 Volts windings. OK, we now
pull about 25 Amps and run at about 6 Amps. To even further reduce this peak, we want to install a
Softstarter and we have found the Sqaure D Model # LH4N112LU7.
It looks OK to me BUT...
A friend told me about single phase motor not being able to be soft-started
because the all pumps have starting capacitors which will not permit it. He
says that I will not be able to make any movement under 30 Hz and that at
some point in time, the motor will most certainly melt...
Can anyone teach me a little lesson or two on those single phase motors and pumps?
If we where to control this motor with a VFD, would we have to set the min Freq. at above 30 Hz?
Tanks in advance.