Primary switchgear ZF28-550

high-voltageSF6 gas-insulatedcircuit breaker

ZF28-550 Gas Insulated Switchgear features excellent performance. The circuit breaker module adopts a dual-interrupter structure and is capable of interrupting 63kA fault currents under a 120 ms time constant. The equipment can be transported as a complete single-phase bay, enabling more convenient, efficient, and reliable on-site installation. Compact structure Excellent performance High reliability High modularity Features 01 Compact structure With the circuit breaker horizontally arranged, it features a reasonable overall layout, and the mechanism indicators are positioned for easy observation and inspection. 02 Excellent performance The circuit breaker boasts a double fracture structure and has a 63kA breaking capacity at a time constant of 120ms. 03 High reliability It adopts a double-channel sealing structure, ensuring an annual gas leakage rate of less than 0.1%. With excellent insulation performance, it exhibits a whole bay partial discharge of less than 3pC. It enables single-phase whole bay transportation and is featured by high on-site installation efficiency and reliable installation quality. 04 High modularity The product boasts a highly modular design. The connecting flanges are of standardized dimensions, allowing for flexible configuration according to requirements, and the modules are highly interchangeable, facilitating expansion and the optimization of substation layout.