Thermally Protected Motor

That means that there s a switch which protects the motor of overheating.

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. See mg 1 1 71 and mg 1 1 72. Mechanical overloading stalling of motor shaft low supply voltage single phase of supply mains imbalance of supply mains. The type of thermal overload for which the thermal protection is designed 1 digit.

For understanding motor thermal overload protection in induction motor we can discuss the operating principle of three phase induction motor. 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. Due to such symmetrical distribution when three phase power supply.

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. 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. If the motor has this added special layer of protection the. You can also choose from ccc ce thermally protected motor as well as from drip proof totally enclosed and waterproof thermally protected motor and whether thermally protected motor is 208 230 240 v or 115 120 v.

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. The degree of protection that an internal protection device provides is classified in the iec 60034 11 standard. Thermal winding protection for motors is a key component in operational automated equipment. A wide variety of thermally protected motor options are available to you such as single phase three phase.

For instance if on the nameplates is a marking. For motors equipped with thermal protectors the words thermally protected if the motor provides all the protection described in mg 1 12 52.