The terminal must strengthen its own electrical strength and insulation capacity

Terminals are widely used in low-voltage electrical appliances. If the insulation of low-voltage electrical appliances is damp or damaged or aging due to external effects, then its insulation resistance will definitely be reduced; it may also cause breakdown of the electrical appliance due to breakdown of the insulation under the action of voltage.

Another effect is that the flashover on the surface causes a short circuit between phases. If the insulation resistance is significantly reduced and the grounded metal parts of the appliance are electrified, an electric shock injury or death may occur; an appliance with a reduced insulation resistance will also reduce the insulation resistance of the system where it is located, causing malfunction of the relay protection device and destroying the operation of the entire system .

A standard "GB13140.1-2008" of the terminal requires that the connecting device (terminal) should have sufficient insulation resistance and good electrical strength, then it is necessary to determine whether it is qualified by testing. Each clamping piece of the terminal connector shall be connected to the conductor with the smallest and largest cross-sectional area in sequence. We generally carry out Jiexi County terminal experiment measurement in these parts:

Between all the clamping pieces connected together and the connecting device body without fixing device or all the clamping pieces connected together and the clamping pieces on the mounting base of the linking device with fixing device; each clamping piece and all Between the clamps connected to the linking device without fixtures or between each clamp and all the clamps on the mounting base of the linking device connected to the fixture; if the inner insulating liner of the metal housing is to ensure electrification If it is necessary to meet the clearance requirements between the parts and the following parts, it is between the metal foil and the body where the inner surface of the gasket contacts.

To sum up, a high-quality and durable terminal, its function and quality must be tested by experiments, whether it is its own electrical strength and insulation resistance experiments or pulling force, etc., are the standards that terminals must pass and compound. Super will surely do a good job for each product.