Factors in mechanical strength of composite insulators

The mechanical strength of organic composite insulators has unique advantages in the insulator family, but its mechanical strength is still affected by three aspects.

1 power fitting strength

The mechanical strength of the electric power fittings matched with the organic composite insulator affects the mechanical strength of the organic composite insulator. When the insulator string is installed, the mechanical strength of the metal fittings for the organic composite insulator also has relatively high requirements. This is the reason why the right amount of water in a wooden barrel is determined by the shortest piece of wood.

2 composite insulator core strength

The strength of the mandrel is the decisive factor in the tensile strength of the insulator. Insulators need to have strong tensile strength against wire tension in power transmission and distribution lines. This is the key to the mechanical strength of the composite composite bar.

3 Connection structure of power fittings and composite insulators

The insulator string needs to be used in conjunction with the fitting during the installation process. The mechanical strength of the link fitting determines the service life of the insulator string. This is done in the installation of organic composite insulators. The internal type, the outer type or the inner and outer knot combination is the main form of composite insulator installation. In addition, the crimp joint structure is also in line with the common form of insulator installation.

The most common form of organic composite insulators in China is the internal composite insulator, which is used frequently in the hanging circuit. It is also widely used in domestic transmission and distribution lines, and its good mechanical properties. And the electrical performance can ensure the performance of most domestic transmission lines for the performance of insulators. The longevity of decades of service life brings the convenience of power maintenance. This is also the choice of domestic 输-type composite insulators for domestic transmission and distribution lines. main reason.