How different between under current and low power protection
How different between under current and low power protection
(OP)
Dear sir
I have interesting question about the protection of equipment (ie pump) that connect to the motor. In the past I've ever used undercurrent technic to protect the pump from low flow(loss suction) , but now I see some plant use power metering instead. Theorically ,power input to motor = fn( current ^2) so I think that current can be represented for the required power by load (pump) . How about you opinion?
Cordially yours
PAP
I have interesting question about the protection of equipment (ie pump) that connect to the motor. In the past I've ever used undercurrent technic to protect the pump from low flow(loss suction) , but now I see some plant use power metering instead. Theorically ,power input to motor = fn( current ^2) so I think that current can be represented for the required power by load (pump) . How about you opinion?
Cordially yours
PAP





RE: How different between under current and low power protection
RE: How different between under current and low power protection
You can still use measurement of motor amps to get an idea of what the pump is doing but you just need to take care with the setting (be sure that it is above the motor no-load current). Measuring power is more positive and precise (and expensive).
RE: How different between under current and low power protection