UPGF6-31487-10 Circuit Protection

Circuit breakers are important protection devices for power systems, especially the ultra-high-power high voltage generating equipment. UPGF6-31487-10 is a continuously adjustable vacuum circuit breaker with a rated voltage of 10kV and a rated current of 6300A. With the continuous development of voltage and current grade, its application field has gradually expanded.

The UPGF6-31487-10 is mainly suitable for three-phase AC 50Hz-60Hz related power systems. The circuit breaker series all have high breaking capacity and withstanding capacity, and its rated short circuit breaking current is 80kA and can has customized solutions for 120kA system. It also equipped with short arc extinguishing system for the reduce of switching operation. Moreover, it also achieved the design goals of high reliability, suitable operation characteristics, flexible circuit breaker protection, low power lost, low operation temperature raising and power frequency withstand voltage etc.

The working principle of vacuum circuit breaker is composed of three parts: breaking arc, arc interrupting, re-ignition preventing. In the breaking process, the rapid electrified components of contact produce high temperature gradually and the arc of high temperature will be stretched longer. When the contact moves away, the compressed air on the contact surface due to the vacuum interrupter structure will flow to gap junction with a rarefied arc and cool the contact rapidly. The arc will be quickly extinguish due to rapid cooling and it will preventing the re-ignition.

Due to the reason of the rarefied arc effectively, it can reduce the temperature rising when it operates and make it suitable for operating at high temperatures. The UPGF6-31487-10 circuit breaker is also equipped with a closed construction design, combined isolated structure and good sealing performance to preventing the insulation drying and prolong its insulation life. The install point of vacuum breaker should be located in the a lower temperature for the preventing of shortening the insulation life.

In addition, UPGF6-31487-10 also has magnetic drive switching mechanism which can make the switching operation more reliable. Moreover, its advanced circuit breaker protection system provides ideal protection for large power system and operation more flexibly. In summary, UPGF6-31487-10 is very suitable for controlling and protecting large ultra-high-power power system. With its reliable protection and low power consumption, it is widely used in large voltage and current power systems nowadays.