I have a 24VDC reversing motor being moved 2700 feet from the controller power source. The motor requires 6 amps for normal operation but it is a torque motor in a valve actuator and requires 51 amps locked-rotor. Since it starts under a load the starting current is about the same as locked...
I have an application where I am replacing a 250VDC reversable motor with 24VDC reversable motor. I need an efficient way to reduce the voltage to the motor. Would I just use a DC-DC converter rated for the motor FLA? This would need to be up the line from the customers controls to reverse...
I have some fractional hp, 120vac motors that we have found quite a bit of rust on the rotors. These are rated at about 35oz.ins. of torque and I need every bit I can get. Will the rust on the rotors drive up the amp draw or reduce the torque output or both? Any help is appreciated.
I have an application where I need a 24VDC motor that is undamaged by voltages from 20 to 30 VDC and will sustain 185°F ambient. It also has to fit my current mounting provisions of 3.125in diameter, 4.88in body length. The motor I have now is rated 100oz.in. torque, 1/4 HP, 3350 RPM @ no load...
Do to a combination of problems in the field I have as much as 45 volts induced across a 120VAC control circuit. The power wiring (480VAC) is run in the same conduit along with several control loops and even water has been found in part of the underground conduit, but rather than correcting the...
I have a 480V, 3Ph, 60Hz motor starter control box. I have a secondary surge arrestor (650V Phase-to-Ground maximum) at the incoming terminals to the control box. It is installed in a plant that has had some power surge problems with their supply power to the plant and...
I am looking for a definition or application of a torque motor per the NEC. I work at a valve actuator manufacturing facility and I am have a problem rating citcuit protectors, etc.. According to the NEC a torque motor should be rated at its locked rotor current instead of the full load...
I am looking for a definition or application of a torque motor per the NEC. I work at a valve actuator manufacturing facility and I am have a problem rating citcuit protectors, etc.. According to the NEC a torque motor should be rated at its locked rotor current instead of the full load...
