Users’ Guide for Earth Ground Resistance Tester
Safety
1. Safety
The earth resistance tester (hereinafter referred to as meter) , which is up to GB4793.1, the requirement on the safety
of electronic measurement instruments, is designed and manufactured in accordance with EN 61010-1, EN61010-2-030
Safety Standard, regarded as Grade 2 pollution, and the maximum voltage for the meter to probe can not exceed CAT
300V.
The users’ manual includes cautions and safety regulations, which specifies the rules in usage of the meter to avoid
personal injury accident and long keep the meter in good condition, therefore, please read the manual before using the
meter and adhere to the operation instructions inside it, and inobservance of the manual in using the meter may cause
personal injury or damage to the meter. Protection impairment if used in a manner not specified by the manufacturer.
Safety Symbols
Danger: improper operation will cause severe or fatal i njuries.
Warning: improper operation may cause severe or fatal injuries
Caution
：
improper operation may cause personal injuries or damage to the meter
: Equipment protected throughout by double insulation or reinforced insulation
CAT III (measurement category III): Applicable to test and measuring circuits connected to the distribution part of the
building’s low-voltage MAINS installation.
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