The direct-reading salt density tester is used for the anti-pollution flashover detection of the power system. It is a special measuring instrument for measuring the equivalent salt density on the surface of the insulator (hereinafter referred to as “salt density”). It can also measure the conductivity and temperature of the solution. The whole machine is widely used in electric power, teaching, scientific research and other related industries due to its high measurement accuracy, large measurement range, and convenient use.It is a product of the cable line tester series.

The classification of pollution grades and the drawing of pollution grade distribution maps are the basis of anti-pollution flashover work. An accurate pollution grade distribution map is the basis for selecting the creepage distance of the electric porcelain external insulation of power transmission and substation equipment. The equivalent salt density value on the surface of the insulator is the quantitative data to judge the seriousness of the pollution of the external insulation of the electric porcelain, and it is one of the important basis for dividing the pollution level and drawing the pollution area map. Therefore, the salt density measurement is of great significance to the safe operation of the power system.

Reference standard:

GB/T16434-1996 “Environmental pollution classification and external insulation selection standard for high-voltage overhead lines, power plants and substations”

GB/T16434-200X “Selection and size determination of high-voltage insulators under polluted conditions-Part 1: Definitions, information and general principles”

Q/GDW152-2006 “High-voltage overhead lines, power plants, substations environmental pollution area classification and external insulation selection standards”