ARM33 Multifunction Power Meter

Product Description


  • Economical multifunction power meter
  • Suit for voltage distribution system up to 650kV
  • Dual Source kWh phase track record separately grid & generator supply
  • 31st Harmonic analysis, THD
  • One RS485, support MODBUS-RTU protocol
  • Phase sequence adjustment
  • 2 status input (standard)
  • Alarm setpoint (optional)
  • Bar chart display for harmonic


Connection mode 3 phase 3 wires, 3 phase 4 wires
Metering True RMS, 1 sec refresh time
Relay Output (Optional) 2 channels, Node capacity: 250Vac/5A
Power Supply 85~265VAC or 100~300VDC
Power Loss <5VA
Power Frequency Withstand Voltage AC 2KV/minute
Insulation Resistance ≥100MΩ
Impulse Withstand Voltage AC 85~265V or DC 100~300V
Standard (EMC) Electrostatic discharge immunity test IEC61000-4-2, Level 4

Radiated immunity test IEC61000-4-3, Level 4

Electrical fast transient/burst immunity test IEC61000-4-4, Level 4

Surge immunity test (1, 2/50μs~8/20μs) IEC61000-4-5, Level 4


Input Rated current: 5A or 1A

Rated voltage: 220/380V, 35Hz~65Hz

Status Input Voltage 2 channel active status input,less than 60V is open,more than 140V is closed,the

maximum input is 300V

Overload Low voltage system: Up to 400V(L-N) / 650V (L-L)

High voltage system: Up to 650kV

Communication RS485 serial, support Modbus-RTU

Baudrate: 4800, 9600, 19200bps

Address: 1~247

Dimension Panel: 96 x 96 x 18 mm

Cut-out: 89.5 x 89.5 x 69.8 mm (+0.5mm)

IP Index IP54 (front panel) and IP20 (case)
Weight Approx. 500gr.
Environment Operating temperature:- 10 °C~+55°C

Limit Operating temperature: 25 +55°C

Storage temperature: -40°C~+70°C

Humidity: 5%~95% RH, non-condensing