IEC Specification for Cable Accessories
【Abstract】: Cable accessories are one of the indispensable and important supporting equipment in the electrical, power and light industry industries. From ultra-high voltage transmission lines to household appliances, cable accessories are inseparable from every aspect of our lives. . It has many varieties and is widely used. There are thousands of domestic manufacturers, and many products have been included in the product scale of national electrical product safety certification. With the advancement of science and technology and the increase of social needs, in recent years, my country has formulated and revised many national standards for wires and cables. |
Cable accessories are one of the indispensable and important supporting equipment in the electrical, power and light industries. From ultra-high voltage transmission lines to household appliances, cable accessories are inseparable from every aspect of our lives. It has many varieties and is widely used. There are thousands of domestic manufacturers, and many products have been included in the product scale of national electrical product safety certification. With the advancement of science and technology and the increase of social needs, in recent years, my country has formulated and revised many national standards for wires and cables. In general, there are three main levels of applicable specifications for cable accessories (IEC specifications, national specifications, and occupational specifications). In this issue of the article, I will introduce you to the first-level standard of cable accessories. For details, please refer to the following:
1. The first-level standard of cable accessories: IEC specification
IEC60859Cable Connection Device for Gas-Insulated Metal Shutoff Switches for Extra Voltage 72.5kV and Above;
IEC61442Extra Voltage 6kV (Um=7.2kV) to 30kV (Um=36kV) Power Cable Accessories Test Method;
IEC60502Extra-voltage 1kV (Um=1.2kV) above to 30kV (Um=36kV) extruded insulated power cables and accessories;
IEC60840Extra Voltage 30kV (Um=36kV) Above to 150kV (Um=170kV) Extruded Insulated Power Cable and Its Accessories Test Methods and Requirements;
IEC62067Power Cable System for Extruded Insulated Power Cables and Accessories with Extra Voltage Above 150 kV (Um=170kV) to 500kV (Um=550kV)--Experimental Methods and Requirements;
IEC60055Extra voltage 18/30kV and below paper insulated metal protective sheath (with copper or aluminum conductors, but excluding compressed air and oil-filled cables); Part 1Cable and accessories test; Chapter 7: Type test of accessories .
2, cable accessories implementation standards:
(1). The on-site installation process must be correct and correct, and the process operation rules must be strictly followed. After the power-on test is correct, it can be put into operation.
(2). The design of the cable accessories must be reasonable, and the performance of the components, parts or materials of the factory's cable accessories meet the requirements of the corresponding specifications; only after passing the inspection can they leave the factory.
(3). There is a section of cable in the cable accessories, so the insulation quality of the cable body must be reliable, otherwise it will directly affect the reliability of the performance of the cable accessories, and eliminate the possibility of failure from the carrier.
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