The ME237 three-phase multifunctional panel meter supports 1/5 A CTs (ME237C) or external 333 mV CTs (ME237V) or flexible Rogowski
coil (ME237V).
The ME237 supports 3PH3W and 3PH4W systems; It can measure current, voltage, power factor, harmonics, power, energy and other electrical elements.
parameters of L1, L2, L3.
Standard RS485 communication interface can support various configuration systems through MODBUS-RTU standard
protocol.

Power supply:

The meter adopts external power supply mode, without internal direct power supply. The power supply voltage range is 95 ~ 265VAC / 110 ~ 260VDC,
45 ~ 60 Hz and the maximum power consumption is 3.5 VA.
-Do not connect the meter with the live wire.
- Before connecting the power supply, make sure the power supply voltage is within the required range; otherwise the meter will not be able to work.
usually.

Voltage and current input:

The meter supports two wiring modes, three-phase four-wire (3P4W) and three-phase three-phase (3P3W).
-The actual wiring mode of the meter should be consistent with that of the internal configuration of the meter.
- Three-phase four-wire requires three current sensors.
- Two or three current sensors are required for a three-phase three-wire system. The use of two current sensors does not affect the measurement.
of power and electrical energy, but the current of phase B cannot be measured. Three current sensors can be used to measure the B phase current.
- The phase sequence of voltage and current must follow the phase sequence of ABC; Otherwise, the meter will display phase sequence error.
voltage and current.
- When using the current sensor, the direction of the current arrow on the sensor should be consistent with the direction of the actual current flow, i.e.
The current arrow on the sensor points to the end of the load.