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I know motors are designed to start at +/- 10% of rated voltage. For instance, a 208-230V motor should be able to start at 187V. Does this mean that the motor can start under full load with the voltage at 187V before the motor is started? If so, the voltage drop will be even lower with the...

Normally, in my experience with motors, amber indicates power available. Green indicates run. Red indicates trouble or fault. If the motor is stopped, then only the amber light will be on.

I am talking about the ATO's that are used inside the motor itself, not in a starter.

I am looking for information on Automatic Thermal Overloads (ATO), specifically on installation. What is the best location and how do they actually work? I have looked at websites for manufacturers and cannot find any detailed information. Any information is welcome, links to websites are...

Check out this link: http://www.osha.gov/dts/osta/lototraining/std/147-ht-rel.htm#jump It will take you to the OSHA web page concerning Lock-Out/Tag-Out

OSHA requires that the electrical power must be locked out prior to working on equipment, whether it is electrical or mechanical. You should also tag out the nearest valve upstream of the equipment if applicable. If you have a comprehesive Lock-Out/Tag-Out system in place this information...

If you are using a gear reduction or increaser to create the 850 rpm that you need for the fan, then remember that you will also be affecting the torque that the motor can produce. By using a 720 rpm motor, increasing the speed of the motor will reduce the amount of torque the motor can apply...

busbar, i have already checked the capacitors and they checked out fine. i have also checked the resistances of the start windings as well and took measurements of the rotor and bearings. everything appears to check out.

Taking a sample of 10 electric motors (2Hp, 208/230V, 3600rpm, single phase, capacitor start)and coupling them to a pump we tried to find the Pull/Up Torque of each motor. The motors were designed to have a minimum Pull/Up Torque of 90 oz-ft. All of the motors are from the same batch off the...

While testing a line of motors with the required pumps, we noticed that the pull-up torques varied. The motors were designed as 208-230V, 3515 rpm, TENV, 1 Phase. The required minimum pull-up torque was set at 90 oz-ft. This motor was designed with at a minumum of 99 oz-ft of torque. While...