Thermally Protected Motor

Such as thermal overloading or overheating can cause insulation failure and damage to the winding so for proper motor thermal overload protection the motor must be protected against the following conditions.

Thermally protected motor. The words thermally protected on a motor nameplate indicate that a thermal protection device is an integral part of the machine and when properly applied will protect it from dangerous overheating. See mg 1 1 71 and mg 1 1 72. The degree of protection that an internal protection device provides is classified in the iec 60034 11 standard. Different types of thermal protection exist and are identified by a tp code tpxxx which indicates.

For instance if on the nameplates is a marking. The type of thermal overload for which the thermal protection is designed 1 digit. This creates a level of protection against excessive winding temperature that could eventually lead to permanent winding insulation breakdown and failure easa has a nice page with some good pictures of typical motor failures. A wide variety of thermally protected motor options are available to you such as single phase three phase.

When you see the term thermal protection or thermally protected used in the description of an electric motor it refers to a device found within the motor or motor compressor that is designed to prevent dangerous overheating that can cause motor failure. For motors equipped with thermal protectors the words thermally protected if the motor provides all the protection described in mg 1 12 52. F it means that the motor is protected up to 155 c. Tp is the abbreviation for thermal protection.

If the motor has this added special layer of protection the. For understanding motor thermal overload protection in induction motor we can discuss the operating principle of three phase induction motor. That means that there s a switch which protects the motor of overheating. Due to such symmetrical distribution when three phase power supply.

There is one cylindrical stator and a three phase winding is symmetrically distributed in the inner periphery of the stator. In other words thermally protected motors are an exception to the rule.