Modbus Smart Power Meter with 333mV CT Input
Driving ESG Goals through Smarter Energy Management
Achieving ESG targets requires more than reducing energy use—it starts with clear and measurable power data. PLANET Smart Power Meter series helps organizations track energy consumption, improve operational efficiency and support sustainability reporting across commercial, industrial and public infrastructure environments. With greater visibility into power usage, businesses can make more informed decisions and turn ESG commitments into measurable energy management actions.
Dedicated Power Monitoring for Critical Electrical Loads
As energy efficiency and sustainability become increasingly important, accurate circuit-level electrical data is essential for understanding the operating conditions of individual loads. PLANET introduces the SPM-D01 Series DIN-rail smart power meters for dedicated monitoring of distribution feeders, motor control panels, industrial machinery and other critical electrical loads. By providing detailed electrical and energy information for a single circuit, the series helps users identify abnormal conditions, evaluate equipment performance and improve energy-management decisions.
Two Current Sensor Options for Different Applications
The SPM-D01 Series consists of two models designed for different current-sensing requirements. The SPM-D01-M supports conventional current transformers with a 333mV output for general electrical panels and low-to-medium-current circuits. The SPM-D01-R supports Rogowski coils, whose flexible structure makes them suitable for large conductors, busbars and high-current applications. These two sensing options allow users to select the appropriate installation method without changing the core power-monitoring functions.
Flexible Wiring for Various Power Systems
The SPM-D01 Series supports 1P2W, 1P3W, 3P3W and 3P4W systems with balanced or unbalanced loads. Depending on the selected power system, the meter can operate with one, two or three current sensors and with or without external potential transformers. This wiring flexibility enables the same meter platform to be deployed across different single-phase and three-phase electrical environments.
Software-assisted Auto Wiring Change
The built-in Auto Wiring Change function can identify and correct certain voltage and current wiring relationships through software when the required operating conditions are met. This helps reduce the time needed to correct supported wiring errors during installation and commissioning. Wiring information can also be viewed from the front panel to help operators verify the measurement configuration.
High-accuracy True RMS Measurement
With True RMS measurement and a sampling rate of 128 points per cycle, the SPM-D01 Series provides reliable measurement for different electrical load characteristics. It delivers 0.2% voltage and current accuracy and 0.5% active, reactive and apparent energy accuracy, making it suitable for equipment energy monitoring, operating-condition analysis and electricity cost allocation.
Detailed Electrical and Power-quality Information
The SPM-D01 Series measures phase and line voltage, current, neutral current, frequency, active power, reactive power, apparent power, power factor, phase angle, and active, reactive and apparent energy. It also provides voltage and current total harmonic distortion, three-phase voltage and current unbalance, demand calculation, and maximum and minimum value recording. These measurements allow users to examine the electrical behavior of a selected load in greater detail.
Historical Data and Abnormal Event Tracking
The built-in 2MB Flash memory records selected measurement parameters at configurable intervals for historical analysis. The meter can also store up to 16 abnormal-event records, including the event source, operating status, measured value, date and time. These records help users review load changes and investigate abnormal electrical conditions without relying only on real-time readings.
Energy Cost and CO₂ Emission Visibility
In addition to electrical measurements, the SPM-D01 Series can display accumulated electricity cost and estimated CO₂ emissions based on configurable conversion values. This information allows energy consumption to be presented in operational, financial and environmental terms, supporting equipment-level efficiency evaluation and sustainability reporting.
RS-485 Communication and Energy Pulse Output
Both models are equipped with an RS-485 interface supporting Modbus RTU for integration with EMS, BMS, SCADA and industrial control systems. Communication rates of up to 115200bps and transmission distances of up to 1200 meters enable flexible field deployment. An open-collector pulse output can be assigned to imported or exported active and reactive energy for connection to external counters or monitoring equipment.
Space-saving DIN-rail Installation
With a compact 72 × 58.7 × 87.5mm enclosure, the SPM-D01 Series can be installed in distribution panels where available space is limited. The 128 × 64 dot-matrix LCD, four operating buttons and front-panel indicators provide convenient on-site measurement viewing, wiring verification and parameter configuration.
