2. Instrument model: truthfully fill in and indicate what type of grounding tester is used.
3, noun explanation:
(1) Lightning protection grounding: grounding to prevent direct lightning, side lightning and induced overvoltage.
(2) Protective grounding: In order to prevent personal electric shock, the exposed conductive part of electrical equipment is directly connected to the ground.
(3) Repeated grounding: generally refers to TN power supply system, where the line is at the incoming line of the building, and the PEN or PE line is grounded again.
(4) Electrostatic grounding: grounding to prevent static electricity from affecting normal work during use.
4. Grounding type: according to the noun explanation, fill in the corresponding column according to the grounding type of the construction project.
5. System: refers to the value measured by connecting all grounding devices of a certain grounding type.
6. Test conclusion: Compare the measured values of each group with the design requirements, and fill in the design requirements when the measured values are less than or equal to the design requirements.
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