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Figure 9 Three-phase four-wire connection method
Connection for pressure-wire: Use the special voltage
testing lines (four groups as yellow, green, red and black); one
end insert the UA, UB, UC, UN phase socket of the equipment
in turn, and the other end insert the A phase, B phase, C phase
and zero line of the circuit being measured respectively.
Connection for current line: Insert IA, IB, IC clamp to IA, IB,
and IC socket of the equipment, and clutch the other end to the
current circuit being measured.
