3-Phase Bidirectional Smart kWh Energy Meter with RS485
3-Phase Bidirectional Smart kWh Energy Meter with RS485
3-Phase Multifunction Smart Bidirectional Energy Meter with RS485 Communication
Monitor your three-phase electrical system with precision using this smart bidirectional kWh energy meter. Built on advanced microelectronic technology and large-scale integrated circuits, it combines digital sampling processing with SMT technology to deliver accurate, real-time measurements of active and reactive energy, voltage, current, power factor, and frequency — all displayed on a bright LCD backlight screen.
Compact, lightweight, and designed for 35mm DIN rail installation, this meter fits seamlessly into standard electrical panels. Its RS485 communication interface enables easy integration with building management systems, SCADA platforms, and remote monitoring setups, making it an excellent choice for industrial, commercial, and advanced residential energy management applications.
Made in Mainland China.
Key Features
- Bidirectional Energy Measurement: Measures both import and export active energy — ideal for solar and renewable energy systems.
- LCD Backlight Display: Clear, easy-to-read readout in any lighting condition.
- 35mm DIN Rail Mounting: Quick and secure installation into standard electrical enclosures.
- Class 1 Accuracy: High-accuracy active energy measurement (Level 1) and reactive energy measurement (Level 2).
- RS485 Communication: Enables remote data acquisition and integration with automation and monitoring systems.
- LED Pulse Output: Passive pulse output with LED indicator for pulse verification.
- Multi-Parameter Monitoring: Instantly query voltage, current, power factor, frequency, and energy data via front-panel keys.
- Wide Operating Range: Functions reliably from -10°C to +55°C with 5%–95% relative humidity tolerance.
Technical Specifications
| Rated Current | 5(100)A |
| Input Frequency | 50/60 Hz |
| Starting Current | 0.4% Ib |
| Working Voltage | 3×230VAC ±20% |
| Power Consumption | <2W / 10VA per phase |
| Accuracy Class | Class 1 |
| Dimensions (L×W×H) | 126 × 78 × 91 mm |
| Installation | 35mm Standard DIN Rail |
| Working Temperature | -10°C to +55°C |
| Storage Temperature | -40°C to +70°C |
| Relative Humidity | 5% – 95% |
| Communication | RS485 |
| Battery | Not required |
What's in the Box
- 1× 3-Phase Bidirectional Energy Meter
Note: Colors may appear slightly different due to screen settings. Please allow ±1–10mm measurement variance due to manual measuring methods.
For more information on electrical metering standards and energy measurement, visit the NIST Smart Grid resource page.
Frequently Asked Questions
Q: What is RS485 communication and why does it matter for an energy meter?
A: RS485 is a robust serial communication standard that allows the meter to transmit energy and power data over long distances (up to 1,200 meters) to a central controller, PLC, or monitoring software. This makes the 3-phase energy meter ideal for building automation, industrial monitoring, and solar energy management systems where remote data logging is required.
Q: Can this kWh meter measure energy from solar panels or other energy generation sources?
A: Yes. The bidirectional energy measurement capability means this meter can record both energy drawn from the grid (import) and energy fed back into the grid (export), making it well-suited for solar photovoltaic installations and other distributed energy generation setups.
Q: How is this 3-phase energy meter installed?
A: The meter features a standard 35mm DIN rail mounting system, allowing it to snap directly into most electrical enclosures and distribution panels. Its compact dimensions (126×78×91mm) ensure it fits in tight spaces without issue. Installation should always be carried out by a qualified electrician in accordance with local electrical codes.
Q: What parameters can I monitor with this smart energy meter?
A: This multifunction meter displays a comprehensive range of electrical parameters including active energy (kWh), reactive energy (kVARh), three-phase voltage, current, power factor, and frequency. All values are accessible via the front-panel keys and the backlit LCD screen, and can also be read remotely via the RS485 interface.