Motor energy-saving rectification overheating delay protection self-locking device

Abstract

The invention relates to a motor energy-saving rectification overheating delay protection self-locking device, belongs to the technical field of motor energy-saving rectification overheating delay protection self-locking devices, and provides a motor energy-saving rectification overheating delay protection self-locking device capable of stably supplying power and accurately controlling the stop and self-locking of a motor due to overheating. A technical solution for solving the technical problem is characterized in that the other end of a stop button TA1 is successively connected in parallel with one end of the normally open contact CJ1.3 of an AC contactor CJ1, one end of the delayed closed contact SJ1.2 of a time relay SJ1, one end of the normally open contact ZJ1.3 of an intermediate relay ZJ1, and one end of the normally closed contact CJ1.4 of an AC contactor CJ1, and then is connected with one end of a start button QA1; the other end of the start button QA1 is successively connected in parallel with the other end of the normally open contact CJ1.3 of the AC contactor CJ1, one end of an indicator lamp XHD1, and one end of the normally open contact RJ1.2 of a thermal relay RJ1,and then is connected with one end of the coil CJ1.1 of the AC contactor CJ1. The motor energy-saving rectification overheating delay protection self-locking device is installed and used in a motor control protection device.

Description

technical field [0001] The invention discloses a self-locking device for motor energy-saving rectification and overheating delay protection, which belongs to the technical field of motor energy-saving rectification and overheating delay protection self-locking device. Background technique [0002] The motors currently used often cause overheating of the motors due to overload, winding faults, or unstable power supply voltages, causing damage and burning, resulting in failure risks and economic losses. Therefore, it is necessary to install overheating protection devices in the motor control circuit; due to the environment and Influenced by its own factors, the existing motor overheat protection device is prone to misoperation when the protector operates on the motor. When the equipment is working at full load for a long time, the protector may always take protective action, so that the equipment is always in a state of stopping operation, while When the equipment is overheate...

AI Technical Summary

Problems solved by technology

[0002] The motors currently used often cause overheating of the motors due to overload, winding faults, or unstable power supply voltages, causing damage and burning, resulting in failure risks and economic losses. Therefore, it is necessary to install overheating protection devices in the motor control circuit; due to the environment and Influenced by its own factors, the existing motor overheat protection device is prone to misoperation when the protector operates on the motor. When the equipment is working at full load for a long time, the protector may always take protective action, so that the equipment is always in a state of stopping operation, while When the equipment is overheated and needs power-off shutdown protection, the protector may not perform the power-off protection action completely due to the unstable power supply, which can easily cause equipment failure and damage

Images