What is the check cycle for SF6 gas density monitor?

 According to what basis? Is there a national standard?
 
Density relay detection practice
 
1, detection cycle and testing requirements
 
According to the provisions of the national standard and industry standards, SF6 electrical equipment testing cycle and requirements are as follows:
 
1) The new SF6 electrical equipment is required to carry out gas density relay detection.
 
2) on the operation of the sf6 gas density monitor detection cycle is defined as: handover, the operation of 1 to 3 years, after overhaul, if necessary.

 
 
3) gas density relay action value, should meet the technical requirements of the product or according to the manufacturer. The error of the indication value of the pressure gauge and its variation shall be within the allowable error range of the corresponding grade of the product.
 
There are a lot of foreign products related to the contents of this manual, as every 5 to 10 years of maintenance projects, to sum up the density relay action, the density relay set the value of a verification, and in the inflatable process to check and record the SF6 density relay The latching value of the relay.

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SF6 gas density relay on-site inspection of the relevant issues

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SF6 gas has been widely used in high pressure, ultrahigh voltage electrical equipment as insulation and arcogenic medium because of its excellent insulation, arc suppression characteristics and stable chemical properties. While the electrical equipment of the dielectric strength and arc suppression capacity depends on the density of SF6 gas. SF6 gas density will bring two aspects of the harm, first, resulting in lower voltage strength of electrical equipment, and second, led to the circuit breaker breaking capacity decline. In addition, the SF6 density relay reduction is usually caused by leakage, and leakage is often accompanied by the atmosphere of water into the equipment penetration, resulting in SF6 gas water content increased, resulting in electrical equipment, insulation performance further decreased.   Therefore, in order to ensure the safe and reliable operation of electrical equipment, it is necessary to monitor the density of SF6 gas.  sf6 gas dens...
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