How Does Thermal Protection in a Motor Work?
time2011/10/11
Amplifier overload
Amplifier, or to increase the signal to provide power equipment to prevent excessive current, overload a specific amount. Amplifier with rated current equal to or more than, not allowed to overload the power of the signal through the electrical motor manufacturing machines to provide less thermal protection rating.
Fuse
Fuse as a sacrifice zone or wire melting and interrupt motor current is too large. Thermal fuse protection provides a simple and inexpensive means, but does not allow the motor servo control off. When overload occurs, the failure of fuses and circuit break, immediately turn off the power and motor manufacturing machines.
Overload Relays
Overload relays work, through bimetal, which is heated by the motor current and, once they reach a certain degree of heat release the spring. Spring motor manufacturing machines, the transfer of circuit overload relay contacts. Overload relay operating time is fixed, or constant, whether the motor rated current.
Amplifier, or to increase the signal to provide power equipment to prevent excessive current, overload a specific amount. Amplifier with rated current equal to or more than, not allowed to overload the power of the signal through the electrical motor manufacturing machines to provide less thermal protection rating.
Fuse
Fuse as a sacrifice zone or wire melting and interrupt motor current is too large. Thermal fuse protection provides a simple and inexpensive means, but does not allow the motor servo control off. When overload occurs, the failure of fuses and circuit break, immediately turn off the power and motor manufacturing machines.
Overload Relays
Overload relays work, through bimetal, which is heated by the motor current and, once they reach a certain degree of heat release the spring. Spring motor manufacturing machines, the transfer of circuit overload relay contacts. Overload relay operating time is fixed, or constant, whether the motor rated current.