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the interface prompts, and will not be repeated here. The “system settings” are the factory parameters of
the instrument, which cannot be set by non-production personnel.
VIII Field connection
8.1 Ground and port connections
This machine is equipped with a special grounding wire. Please connect the protective ground
of the instrument to the field ground before performing other wiring and operations. After the test,
turn off the power of the instrument, remove the other wires, and finally remove the ground wire. This
machine's fracture line is a four-core sheathed wire with four colors: yellow, green, red, and black, which
correspond to ABC and the public end, respectively. The connection method is shown below.
