Common faults in terminal blocks - LS generates electricity

From the point of view of application, the function that should be reached is: it is necessary to conduct the local area where the touch part should be conducted, and the touch is reliable. If the insulating part should not be conducted, it is necessary to insulate it firmly. There are three common types of faults in terminal blocks:

Common faults in terminal blocks - LS generates electricity

Common faults in terminal blocks - LS generates electricity

1. Poor touch

The metal conductor inside the terminal block is the core part of the terminal, which transmits the voltage, current or signal from the external wire or cable to the touch piece corresponding to the connector it is mated to. Therefore, it is necessary for the touch parts to have excellent structure, stable and reliable touch persistence and outstanding electrical conductivity. Because the structural planning of the touch parts is unreasonable, the data selection is wrong, the mold is unstable, the processing size is out of tolerance, the appearance is rough, the surface treatment process such as heat treatment electroplating is unreasonable, the assembly is improper, the storage and application environment is poor and the operation is improper, and the touch part and the matching part will form a poor touch in the touch part and the matching part.

2. Poor insulation

The function of the insulator is to make the touching piece adhere to the correct orientation, and to insulate the touching piece with the touching piece, and between the touching piece and the shell. Therefore, it is necessary for insulators to have excellent electrical properties, mechanical properties and process molding properties. In particular, with the widespread use of high-density and miniaturized terminal blocks, the useful wall thickness of insulators is getting thinner and thinner. This puts forward more stringent requirements for insulation materials, injection mold accuracy and molding process. Because there are metal residues on the surface or inside of the insulator, the surface dust, flux and other pollution are damp, the organic material extracts and harmful gas adsorption film are fused with the surface water film to form an ionic conductive channel, moisture absorption, mildew, aging of insulation materials, etc., will form short circuit, leakage, breakdown, insulation resistance and low insulation resistance.

3. Poor fixation

The insulator not only plays the role of insulation, but also generally provides the best alignment and maintenance for the outstretched touch parts, and also has the function of device positioning and locking and fixing on the equipment. Poor fixation, light affect the touch firmly to form an instant power failure, serious is the disintegration of the product. Dismantling refers to the abnormal separation between the plug and the socket, between the pin and the jack, which is formed due to the unreliable structure of the terminal in the mating state, due to data, planning, process and other reasons, which will form the serious consequences of the power transmission and signal control of the control system. Because the planning is not reliable, the material selection is wrong, the molding process is not properly selected, the heat treatment, mold, assembly, welding and other processes are of poor quality, and the assembly is not in place.

In addition, the poor appearance caused by the peeling, corrosion, bruising, flash of the molded shell, cracking, rough processing and deformation of the touch parts, etc., and the poor interchange formed by the positioning and locking fit size, poor processing quality consistency, and excessive total separation force are also common and frequent diseases. These kinds of faults can generally be found and removed in time during inspection and application.

Common faults in terminal blocks - LS generates electricity

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