This manual introduces the characteristics and features of the Motortronics MWH series solid state motor winding heater, including that motor windings are prone to condensation when the motor stops, which can cause a short circuit in the motor. This product can automatically heat the motor windings after the motor stops to prevent the formation of condensation.
The Motortronics MWH Series Solid State Motor Winding Heater is designed to prevent condensation build-up in AC motor windings by applying a low-level current when the motor is off. This manual covers the installation, wiring, and operation of the unit, which features fully automatic operation and optional overload sensing. The device is available in models ranging from 10 to 80 Amps.
| Output Voltage Adjustment | Factory set to provide +5° to 10° C differential |
|---|---|
| Fuse Protection | Two fuses protect the MWH |
| Transient Protection | RC snubber circuit and MOV |
The MWH turns on approximately one minute after power is applied to the system.
The MWH is instantly turned off and remains off until the motor is turned off.
The MWH can be disabled automatically when a motor overload trip occurs and goes back on-line automatically after the overload is reset.