2016-07-12

Under normal conditions, SF6 gas is colorless and odorless, has good insulation performance and arc extinguishing performance, once the water in the atmosphere is immersed or the surface of the solid medium is damp, the electrical strength will be significantly reduced. Circuit breakers are outdoor equipment, when the temperature plummets, SF6 gas excess water may condense on the surface of the solid medium and flashover, causing the circuit breaker to explode in serious cases. Pure SF6 gas, in

2016-07-12

SF6 molecule has strong electronegativity, which makes SF6 have strong arc extinguishing ability. Because SF6 molecules become negative ions after adsorption of free electrons, negative ions are easy to combine with positive ions to form neutral molecules, so that the electrical conductivity of the arc space quickly disappears. Especially when the arc current is close to zero, this effect is more significant. If SF6 gas is used to blow the arc, a large number of fresh SF6 molecules are constantl

2016-05-25

Winfoss SF6 concentration online monitoring system is in line with the requirements of the SF6 Safety Regulation Excerpt, which requirements are as follows: Article 191 Power distribution rooms and SF6 gas laboratories equipped with SF6 equipment must be equipped with powerful ventilation devices. The air outlet should be set in the lower part of the room.

2016-05-25

There are many ways to detect SF6 gas leaks. Because sulfur hexafluoride is a negative electric gas, it has the characteristic of absorbing free electrons to form negative ions, and the methods of leak detection are mostly made use of this characteristic. There are four commonly used sulfur hexafluoride gas leakage detection methods: ultraviolet ionization detection, electron capture detection, vacuum high frequency ionization detection and negative corona discharge detection.

2016-05-23

GIS fully enclosed combined electrical appliances advantages: small footprint, less space, high operational reliability, small maintenance workload, long maintenance cycle, not affected by external environmental conditions, no electrostatic induction and corona interference, low noise level, good seismic performance, strong adaptability.

2016-05-10

According to the application of SF6 gas electrical equipment in the power system, it has the characteristics of low humidity. At present, the commonly used SF6 gas humidity detection methods mainly include gravimetric method, electrolytic method, resistance and capacitance method, and dew point method.