Different Short - circuit of Load Switch

With the successful development of the electric switch mechanism dedicated to the load switch, the load switch to achieve a long-range control of the sub-operation, which for the external type of energy meter load control switch to bring new opportunities for development. Most of the external cost control load switch, the use of small circuit breaker structure type, due to increased pre-paid function, making the product function is not only a simple over-current protection, need to have controllable homogeneous operation performance. 

 Therefore, the power system on the cost control load switch the reliability of the higher requirements, not only to successfully complete the line overload, short circuit protection, and requires its short circuit protection and troubleshooting points, the product performance can continue to To ensure the normal power supply circuit. Installed in the line of the load break switch, due to the power system in the transformer capacity, transmission line impedance, the user side and the transformer distance, the load side of the line is very different, resulting in short circuit flows through the load switch fault current size varies. Based on the load switch is generally installed in the terminal of the line, the actual short circuit current of the majority of 630 ~ 6 000A, therefore, by a group of the same specifications of the type of load switch (small circuit breaker) in different short-circuit test current test analysis, Help to study the actual situation of products in different circuits, help to study the product failure reasons and key functional components.