72.5~252kV SF6 Circuit Breaker

1. Product Overview
The 72.5~252kV SF6 circuit breaker is a kind of outdoor high voltage switch device with the rated frequency of AC 50 Hz. It is mainly used for the control and protection of the 72.5~252kV transmission and distribution system, and it is also applied for switching capacitor bank. In addition, this product can work as an interconnecting circuit breaker.

2. Main Features
a. Excellent reliability
b. Small operating power required when breaking short-circuit current
c. Advanced arc extinguishing chamber structure, large breaking capacity and long electrical life
d. Dual sealing rings adopted, low leakage rate (<0.05%/year)
e. Reliable spring mechanism adopted, long service life, little maintenance
f. Long maintenance cycle, up to 10 years
g. Small impact force acting on the support structure and foundation
h. Low noise, no fire and explosion hazard, suitable for residential areas
i. Designed according to extreme environmental conditions, wide range of applications
j. Easy to install and debug
k. Unilateral transmission adopted; the transmission levers are installed on one side of the transmission case and they are on the same plane; this reduces transmission chain and thus reduces transmission loss
l. The oil buffer and brake-breaking spring are mounted on the operating mechanism and are directly connected with the output crank arm. When closing, the output crank arm makes the spring store energy. This reduces transmission loss and improves reliability.
m. Optimized electric field design: the contact structure is optimized and the contact finger is added with a shielding cover, making the electric field more uniform, the dielectric strength recovery faster, and electric arc difficult toreburn.
n. Split air cylinder (divided into air compression chamber and expansion chamber) adopted, making the operating power at breaking short-circuit current smaller. Self-standing contact fingers outside the cylinder make flow margin greater.
o. Our 72.5~252kV SF6 circuit breaker adopts high-strength fine porcelain cover and small stainless steel mechanism box, which is more beautiful in styling.

Related Names
SF6 Switch | Electrical Circuit Protection Device | 3 Phase Circuit Breaker