The main power circuit comes in 2-wire, 3-wire, 4-wire, 5-wire, and 6-wire versions – what are these wires respectively?
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The main power circuit comes in 2-wire, 3-wire, 4-wire, 5-wire, and 6-wire versions – what are these wires respectively? 2 wires could be one live and one neutral, single-phase power at 220V ； It could also be two live wires at 380V, right? The 3 wires could be one live, one neutral, and one ground; they could also be 3 live wires, or 2 live wires and 1 neutral. Are these the three possibilities? What about the 4 wires? What about 5 wires? What about 6 wires? Can a test pen or multimeter be used to determine what type of wire each one is?
The six-wire system refers to the wiring between the sensor and the corresponding transmitter; this type of split-flow meter is also quite common. In most cases, it is a six-wire system from the sensor to the transmitter, and a two-wire system (4-20mA) from the transmitter to the PLC simulator module.