Posted on Leave a comment

Selection of Thermal Relay

The current flowing into the heat element generates heat, and the bimetal piece with different expansion coefficients is deformed. When the deformation reaches a certain distance, the link is pushed to make the control circuit open, thereby causing the contactor to lose power, and the main circuit is broken. Open to achieve overload protection of the motor. This article will show you how to choose the right relay.

Continue reading Selection of Thermal Relay
Advertisements
Posted on Leave a comment

Classification and Common Types of Thermal Relays

Thermal relay is used for motor or other electrical equipment, electrical circuit overload protection of electrical appliances. In the actual operation of the motor, for example, in the process of driving the production machinery, if the abnormal condition of the machinery or the abnormal circuit causes the motor to encounter overload, the motor speed will decrease, the current in the winding will increase, and the winding temperature of the motor will increase.

Continue reading Classification and Common Types of Thermal Relays
Posted on Leave a comment

Anatomical Thermal Relay

The thermal relay consists of a heating element, a bimetal, a contact, and a set of transmission and adjustment mechanisms. The heating element is a resistance wire with a small resistance value, which is connected in series in the main circuit of the protected motor. The bimetal is formed by rolling two metal sheets of different thermal expansion coefficients.

Continue reading Anatomical Thermal Relay
Posted on Leave a comment

Thermal Overload Relay Wiring Diagram and Reset Method

The main structure of the thermal overload relay consists of two parts, which consist of a thermal element and an output auxiliary contact.

Continue reading Thermal Overload Relay Wiring Diagram and Reset Method
Posted on Leave a comment

How to adjust the thermal Overload Relay

Thermal overload relays are widely used for overload protection of electric motors due to their simple structure, ease of installation and use. According to the magnitude and duration of the motor starting current, correctly configuring the connection mode of the thermal relay in the circuit is the key to properly selecting the setting current of the thermal relay.

Continue reading How to adjust the thermal Overload Relay