1. In terms of metal material selection, it should be made of aluminum or aluminum alloy, copper or copper alloy with good electrical conductivity, or it can be made of other suitable materials. On the basis of striving for good electrical conductivity and lower energy consumption, mechanical strength The technical requirements of the equipment should also be met.

2. In terms of the appearance of the terminal, the contact surface should be clean, and there should be no cracks, obvious scars, burrs, corrosion spots, uneven defects and other defects that affect electrical contact and mechanical strength.
3. During the test at ambient temperature of 10°C to 40°C, the temperature rise of the terminal should not exceed the provisions of the corresponding equipment standards. Due to the different operating environments of various high-voltage equipment, the allowable temperature rise values of the terminals are also different. When the equipment leaves the factory, the terminals should be provided with matching fasteners for the limit, such as nuts, bolts and washers. And should have anti-loose design. It is recommended to use a powerful wrench to tighten between the equipment terminals or when the equipment terminals are electronically connected to the high-voltage power system.