Electrical contact online temperature measurement - demand analysis

·Reasons for abnormal temperature rise of electrical contacts

1. The on-site environment is more complex than the experiment, and long-term operation on site has a cumulative effect of temperature rise.

2. There are differences in the expansion effect of metals of different materials at the joint, and plastic deformation occurs slowly under the influence and constraint of stress during high-temperature expansion, resulting in small gaps at the joint.

3. Temperature changes cause oxidation and corrosion at the joint, resulting in an increase in contact resistance.

4. The contact repeatedly moves, and the pressure of the fastening bolts at the connection part is unreasonable, resulting in deformation of the contact surface, reducing the contact area, and increasing the resistance.

5. The purity of the conductor raw material is insufficient, resulting in the conductivity of the conductor material not meeting the requirements.

During the processing, connection, and installation of busbars, inadequate and uneven treatment of the contact surface of the busbars can reduce the effective contact area, increase contact resistance, and generate heat.

Electrical contact temperature measurement involves hardware products

Electrical contact temperature measurement - High voltage switchgear

Electrical contact temperature measurement - low voltage cabinet

Electrical contact temperature measurement - low voltage cabinet

Electrical contact temperature measurement - Transformer temperature measurement

Electrical contact temperature measurement - motor temperature measurement

Temperature measurement of energy storage centralized box

Physical image of sensor