Thermally Protected Motor Wiring

The thermal protection is present to turn the motor off when excessive heat is generated within the motor circuitry.

Thermally protected motor wiring.

The other 9 wires would be connected as in a 9 wire motor note in a 9 wire motor the equivalent of t10 t11 and t12 are internally connected together. Tp is the abbreviation for thermal protection. The ge marathon electric 5kh series thermally protected ac motors come in a variety of shapes and sizes. The 5kh series comes with permanently lubricated bearings.

Due to such symmetrical distribution when three phase power supply. Pacemaker danger magnetic and electromagnetic fields in the vicinity of current carrying carrying conductors and permanent magnet motors can result result in a serious health hazard to persons with cardiac pacemakers metal implants and hearing aids. The thermal protector consists of one or more heat sensing elements built into the motor or motor compressor plus an external control device. This series offers several different horsepower options as well as thermal protection.

This safety feature halts the temperature climb before it can burn up the motor. Electric motor thermal overload switch location. The degree of protection that an internal protection device provides is classified in the iec 60034 11 standard. Always use wiring diagram supplied on motor nameplate.

For understanding motor thermal overload protection in induction motor we can discuss the operating principle of three phase induction motor. Electric motor thermal overload switch location. Motors are to be returned to a hazardous and or explosive atmosphere. An 84 efficient motor with a total watt draw of 400w produces 336 watts of useful energy 400 x 84 336w.

The 64 watts lost 400 336 64w becomes heat. Different types of thermal protection exist and are identified by a tp code tpxxx which indicates. Thermal protection thermal protection overload. The type of thermal overload for which the thermal protection is designed 1 digit.

There is one cylindrical stator and a three phase winding is symmetrically distributed in the inner periphery of the stator. L1 to t1 l2 to t2 l3 to t3 t4 to t7 t5 to t8 and t6. Single phase wiring diagrams always use wiring diagram supplied on motor nameplate for motors without thermal protection single voltage single rotation single voltage reversible rotation dual voltage single rotation split phase motor.