If the motor has this added special layer of protection the.
Thermally protected motor.
There is one cylindrical stator and a three phase winding is symmetrically distributed in the inner periphery of the stator.
Different types of thermal protection exist and are identified by a tp code tpxxx which indicates.
Tp is the abbreviation for thermal protection.
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.
Due to such symmetrical distribution when three phase power supply.
In other words thermally protected motors are an exception to the rule.
F it means that the motor is protected up to 155 c.
For understanding motor thermal overload protection in induction motor we can discuss the operating principle of three phase induction 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.
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 type of thermal overload for which the thermal protection is designed 1 digit.
For motors equipped with thermal protectors the words thermally protected if the motor provides all the protection described in mg 1 12 52.
That means that there s a switch which protects the motor of overheating.
For instance if on the nameplates is a marking.
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.
A wide variety of thermally protected motor options are available to you such as single phase three phase.
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.