T520 series grounding resistance tester with backlit display and battery low voltage, keep and store the data, automatic shutdown function to save power. Three line can be used as precise measuring, also can make a simple two line measurement.

Can be applied to measure all kinds of electric power system, electrical equipment, lightning protection equipment of the grounding system, grounding resistance grounding voltage measurement. Applicable to the smelting, telecommunications, manufacturing, oil, defense, power, chemical industry, construction and other operations of the grounding system tests.