External Rogowski Coil
Supplied with external Rogowski coils with selectable current ratings (Ib 20 A / Imax 600 A) for HV/LV distribution monitoring.
M30333 96 mm Panel-Mount Multifunction Power Meter with External Rogowski Coil
M30333 is a 96 × 96 mm panel-mount three-phase multifunction power meter with dot-matrix (D) white-backlight LCD. It is supplied with external Rogowski coils (Ib 20 A / Imax 600 A), and supports three-phase measurement (Class 1 active energy), dual communication (RS485 + Y-Bus), 2nd–63rd voltage and current harmonic analysis, multi-tariff (6 tariffs, 10 periods), 4 digital inputs, 2 digital outputs, SOE event records and 10 event alarm types. It also supports AC 3 × 400/690 V rated voltage for HV/LV distribution monitoring.
RS485 + Y-Bus Dual Communication
External Rogowski Coil · 96 mm Panel
600 A (Ib 20 A) Rogowski coil current range
Class 1 (B) Active energy accuracy
2–63rd Voltage/current harmonic analysis
−40 to +70 °C Operating temperature
Product Highlights
Rogowski Coil Power Monitoring with Harmonic Analysis
RS485 + Y-Bus Dual Communication
RS485 supports Modbus RTU and DL/T 645-2007 (response ≤100 ms, up to 64 devices); proprietary Y-Bus reads up to 5 downstream sensors for temperature and humidity monitoring.
2–63rd Harmonic Analysis
2nd to 63rd voltage and current harmonic analysis with ±1% accuracy for power quality monitoring in HV/LV distribution systems.
6-Tariff, 10-Period Metering
Multi-tariff metering with 6 tariffs and 10 time periods for time-of-use billing and energy management.
4DI/2DO and SOE Event Records
4 dry-contact digital inputs (response <300 ms) and 2 digital outputs (NO contacts, AC 250 V/5 A). SOE event records with millisecond timestamps and 10 event alarm types.
Wide-Temperature Operation
−40 to +70 °C; panel IP54 / housing IP20; 8 kV impulse withstand voltage; 86 × 86 mm cutout.
Applications
Applications and Selection Guidance
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Explore ApplicationTechnical Specifications
Technical Specifications
| Voltage connection | Direct / PT |
| Rated voltage | AC 3 × 57.7/100 V, 3 × 63.5/110 V, 3 × 230/400 V, 3 × 400/690 V (96 frame only) |
| Voltage tolerance | 0.8 to 1.15 Un |
| Current connection | External Rogowski coil |
| Basic current (Ib) | 20 A |
| Minimum current (Imin) | 1 A |
| Maximum current (Imax) | 600 A |
| Operating frequency | 50 Hz / 60 Hz |
| Meter constant | 1000 imp/kWh, 1000 imp/kvarh |
| Auxiliary power supply | AC 85–276 V, DC 95–350 V |
| Power consumption | ≤1 VA per phase; auxiliary ≤2 W, ≤10 VA |
| Voltage accuracy | ±1% |
| Current accuracy | ±1% |
| Frequency accuracy | ±0.02 Hz |
| Active power accuracy | ±1% |
| Reactive power accuracy | ±2% |
| Active energy accuracy | Class 1 (Class B) |
| Reactive energy accuracy | Class 2 (Class A) |
| Voltage / current harmonic accuracy | ±1% |
| Communication interface | RS485 + Y-Bus |
| Protocol | RS485: Modbus RTU, DL/T 645-2007; Y-Bus: Modbus |
| Communication type | Bidirectional |
| RS485 configuration | Default 115200 bps, 8 data bits, 2 stop bits, no parity; 2-wire; max 64 connections |
| Communication response time | ≤100 ms |
| Y-Bus configuration | Default 9600 bps, 8 data bits, 1 stop bit, no parity; up to 5 downstream sensors |
| LCD display | Dot-matrix (D), white backlight; Menu, left, right and confirm keys |
| Metering function | Energy and key electrical variables (active/reactive power, power factor), current/voltage harmonic content |
| Metering modes | Absolute value, algebraic sum and separate import/export metering |
| Harmonic analysis | 2nd to 63rd voltage and 2nd to 63rd current harmonics |
| Tariff function | 6 tariffs and 10 time periods |
| Digital inputs | 4 dry-contact inputs; built-in power supply; response time < 300 ms |
| Digital outputs | 2 digital outputs; normally open contacts; AC 250 V/5 A, DC 30 V/5 A |
| SOE records | SOE event records with millisecond timestamps |
| Event alarms | Current imbalance, overcurrent, overload, overvoltage, undervoltage, low battery, voltage imbalance, phase-sequence error, low power factor, voltage/current circuit fault |
| Panel IP rating | IP54 |
| Housing IP rating | IP20 |
| Protection class | Class II |
| AC withstand voltage | Grid-to-ground 4 kV; line-to-line 2.5 kV |
| Lightning surge | 4 kV |
| Altitude | < 2000 m |
| Operating temperature | −40 to +70 °C |
| Relative humidity | ≤95% RH |
| Frame size | 96 × 96 mm |
| Housing dimensions | 85.3 × 85.3 × 80.5 mm |
| Applicable standards | GB/T 17215.211-2021 / GB/T 17215.321-2021 / IEC 62052-11:2020 / IEC 62053-22:2020 / IEC 61557-12:2021 |
Structure & Dimensions
M30333 Dimensions & Wiring
Dimensions
Wiring
FAQ
Product FAQ
What is M30333?
M30333 is a 96 × 96 mm panel-mount three-phase multifunction power meter with dot-matrix (D) white-backlight LCD, supplied with external Rogowski coils (Ib 20 A / Imax 600 A).
What current sensor does M30333 use?
External Rogowski coils with selectable current ratings: basic current 20 A, maximum current 600 A.
What communication protocols are supported?
RS485 supports Modbus RTU and DL/T 645-2007 (response ≤100 ms, up to 64 devices). Y-Bus supports the Modbus protocol for up to 5 downstream temperature/humidity sensors.
What harmonic analysis is supported?
2nd to 63rd voltage harmonics and 2nd to 63rd current harmonics with ±1% accuracy for power quality monitoring.
What tariff functions are available?
Multi-tariff metering with 6 tariffs and 10 time periods.
What digital I/O functions are available?
4 dry-contact digital inputs (response <300 ms) and 2 digital outputs (NO contacts, AC 250 V/5 A). SOE event records with millisecond timestamps capture electrical parameters when DI/DO is triggered.
What should be confirmed before selecting M30333 for a project?
Confirm the three-phase wiring system, voltage range, Rogowski coil configuration, panel cutout, auxiliary power supply and communication requirements. For billing applications, verify the applicable certification requirements for the exact product configuration and target market.
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