2016-03-10

As a greenhouse gas, sulfur hexafluoride has strong absorption characteristics for specific bands of infrared light, high sensitivity, is not affected by the environment and interference, no other gas interference, while the environmental temperature and humidity changes brought about by the detection error is small, will not produce false alarms, infrared sulfur hexafluoride sensor life of up to 10 years. Because it adopts the principle of active extraction of gas at the test point, the effect

2016-01-29

In SF6 gas-insulated electrical equipment, the magnitude that causes SF6 gas to decompose and discharge to consume energy is divided into three categories: arc discharge, spark discharge, and corona discharge or partial discharge. Arc discharge: Under normal operating conditions, the circuit breaker will produce arc discharge when it is broken; When a short circuit fault occurs in the gas chamber, arc discharge will also occur. The discharge energy is related to the arc current.

2016-01-27

The insulation materials in SF6 circuit breakers are SF6 gas, thermosetting epoxy resin (made of insulators and tie rods), polytetrafluoroethylene, etc. SF6 gas, thermosetting epoxy resin, polytetrafluoroethylene has good thermal stability, when the temperature exceeds 500 degrees Celsius will begin to decompose, 700 degrees Celsius will be obvious cracking. For the normal operation of the SF6 circuit breaker in the open, its internal temperature is not higher than 80 degrees Celsius, the insula

2016-01-27

Generally speaking, the decomposition products in SF6 electrical equipment refer to the fault gases and products generated by the cracking of SF6 gas and solid insulation materials in the equipment under the action of fault energy when SF6 electrical equipment fails.

2016-01-22

A: SF6 laser imaging leak detector is mainly composed of laser emission system, laser cooling system, low light level electric receiving system, signal conversion amplification and processing system, display unit and power supply. The advantage of SF6 laser imaging detector is that it can detect leaks when SF6 electrical equipment is running, and it can detect very small leaks quickly and far away.

2016-01-22

SF6 gas has excellent insulation properties, in a relatively uniform electric field, its insulation strength is about 2.5 to 3 times that of air, and its insulation strength can reach the level of insulating oil in 3 gauges. The factors that affect its insulation strength are as follows: