What are the Advantages of a Compound Switch?

In power distribution and control systems, compound switches, as upgraded products of traditional mechanical switches and electronic switches, have become key components in smart grid construction due to their integrated design and excellent performance. Their multiple advantages have redefined the application standards for switchgear.

Millisecond-level response speed is the core competitiveness of compound switches. Adopting a combined structure of thyristors and magnetic latching relays, the closing and opening time is controlled within 5-10ms, which is 80% shorter than that of traditional mechanical switches. In distribution network reactive power compensation systems, they can quickly track load changes, stabilizing the power factor above 0.95. After application in an industrial park, the grid line loss rate decreased by 12%.

Zero-power standby and low conduction loss significantly improve energy efficiency. The static power consumption is ≤0.5W, only 1/20 of that of electromagnetic switches; the contact resistance during conduction is ≤5mΩ, and the loss when passing 100A current is 65% less than that of traditional products. Calculated based on 1,000 devices, the annual electricity savings can reach 12,000 kWh, meeting the requirements of green and low-carbon grid construction.

Ultra-long mechanical life reduces operation and maintenance costs. The arc-free contact design enables the mechanical life to exceed 1 million times, which is more than 5 times that of ordinary air switches. In the field of new energy charging piles, the replacement cycle of compound switches is extended to 8 years, reducing the workload of operation and maintenance personnel by 70%.

Full-scenario compatibility adapts to complex grid environments. It supports AC220V-660V wide voltage input, can operate stably in environments from -40℃ to 70℃, and is equipped with overvoltage, overcurrent, and phase loss protection functions. Its adaptation rate in equipment such as photovoltaic inverters and smart distribution boxes reaches 100%.

As smart grids transform towards digitalization, compound switches are integrating wireless communication modules to realize remote status monitoring and fault early warning. Data from a smart distribution network pilot project shows that compound switches equipped with IoT functions have shortened fault location time from 2 hours to 5 minutes. In the future, their applications in microgrids and energy storage systems will further expand, making them an energy efficiency benchmark for power electronic equipment.