Three-phase three-wire active energy meter direct connection circuit

Requirements for direct wiring of three-phase active energy meters.
  1) Before wiring, check the model, specification and load rated parameters of the electric energy meter. The rated voltage of the electric energy meter should be consistent with the power supply voltage. The rated current should
not be less than the load current, and the appearance of the meter should be intact.
    2) The wires connected to the electric energy meter must use copper-core insulated wires. The cross-sectional area of ​​the wires meets the mechanical strength
requirements . The cross-sectional area of ​​the voltage return wires is not less than 1. 5mmZ. For the current loop wires The cross-sectional area should not be less than 2. 5mmz.
The conductors with a cross-sectional area of ​​6mmz and below should use single-strand wires. There should be no joints in the conductors.
    3) The polarity must be connected correctly. The first end of the voltage coil should be connected to the phase line together with the first end of the current wire. The neutral line of the blue phase four-wire must go in and out of the energy
meter.
  4) Wiring must be in positive phase sequence, and the switch and fuse
should be connected to the load side of the energy meter.
    Wiring circuit ; three-phase three-wire active energy meter plug-
in wiring is shown in the figure. This figure shows the
direct connection method of DS type 5-10A three-phase three-wire active energy meter . For three-phase three-wire active energy meters
above 10A , the internal wiring is different, but the external wiring is basically the same.