Miscellaneous

The Growatt TPM-V3 (Three Phase Meter) is a highly precise measuring device for recording the energy flow in 3-phase grids. It is the key component for any Growatt PV system looking to optimise self-consumption, implement zero export, or control a battery storage system.By transmitting real-time consumption and feed-in values to the inverter, the smart meter enables intelligent energy distribution and provides seamless visualisation of your energy management via the Growatt online portal (ShineServer/ShinePhone).Highlights at a glanceHigh measurement accuracy: Records currents, voltages and active power with extremely low error tolerance (Class 1) to ensure precise system control.Real-time monitoring: Delivers instant data on current household consumption, grid feed-in and grid import directly to Growatt monitoring.Supports zero export: Allows inverter configuration for dynamic power reduction if no energy may be fed into the public grid.Simple DIN rail mounting: Compact design for space-saving installation in standard meter cabinet or sub-distribution board.Direct measurement up to 80A: Can be integrated directly into the phase path in most households without external current transformers.RS485 interface: Fast and stable communication with the inverter via the Modbus RTU protocol.Areas of applicationThe TPM-V3 is essential for modern energy concepts:Self-consumption optimisationThe system detects exactly when surplus energy is available in order to store it in the battery or activate devices.Storage systems (SolaX, Growatt SPH/MOD-XH)Essential for battery charge and discharge management based on actual energy demand at the grid connection point.Visualisation & analysisDetailed visualisation of the load profile in the Shine portal to identify high-energy-consuming appliances in the household.Assembly & safety instructionsProfessional connectionInstallation must be carried out by a qualified electrician, as the smart meter is integrated directly into the main line behind the utility meter.Correct phase sequenceStrictly ensure that the phases L1, L2 and L3 on the meter correspond with the connections on the inverter to prevent incorrect measurements or error messages.Communication lineUse a shielded, twisted pair cable (Twisted Pair) for the RS485 connection to avoid signal interference over longer distances. Features Model**Growatt TPM-V3 (Three-Phase)** Connection type3-phase / 4-wire (3P4W) Rated voltage320 V - 480 V (phase-to-phase) Maximum current**100 A** (direct measurement) Frequency50 / 60 Hz InterfaceRS485 (Modbus RTU) Accuracy classClass 1.0 (Active energy) Mounting typeDIN rail (35 mm) Protection classIP51 (indoor use) FAQs about the Growatt TPM-V3 Smart MeterCan the smart meter also be used for systems without a battery?Yes. Even without storage, the smart meter allows you to see your actual self-consumption and export ratio in the portal. Without the Smart Meter, the inverter can only measure generation, not the household consumption.Is the TPM-V3 compatible with all Growatt inverters?With almost all modern 3-phase models. It is natively compatible with the MOD-KTL3-X, SPH-KTL3-UP, MID-KTL3-X series and the new XH series. For single-phase systems, the SPM (Single Phase Meter) is needed.Does the meter display show the same values as the online portal?Yes, but with a higher refresh rate. On the illuminated LCD display, you can read the current values (volts, amps, watts per phase) directly on the unit. The online portal updates the graphical display every 1 to 5 minutes depending on data logger settings.

The Eastron SDM630-M is a modern and multifunctional digital energy meter for three-phase networks, designed for comprehensive monitoring and analysis of electrical parameters. Thanks to its integrated Modbus RTU interface, it can be seamlessly integrated into building automation, energy management or photovoltaic monitoring systems. As a direct-measuring meter up to 100 amps per phase, it offers precise data acquisition for a wide range of applications in commercial, industrial and demanding private households.Highlights at a glancePrecise measurement: Reliably measures a wide range of electrical quantities (kWh, kvarh, kW, kvar, kVA, P, F, PF, Hz, dmd, V, A, THD).Modbus RTU interface: Enables simple remote reading and integration into higher-level systems via RS485.Multifunctional: Suitable for energy monitoring, cost centre billing, load management and PV system monitoring.Direct measuring up to 100A: No external current transformers required for currents up to 100A per phase, simplifies installation.Compact DIN rail format: Simple and space-saving installation in standard electrical distribution boards (4 modules wide).Comprehensive energy monitoring for professional applicationsThe Eastron SDM630-M is the ideal instrument for detailed recording of energy consumption and generation. It enables the precise monitoring of total consumption, individual machines or circuits as well as the recording of energy generated by a photovoltaic system. Thanks to the measurement of active and reactive energy in both directions (import/export), it is perfectly suited for monitoring PV systems with self-consumption. Its data forms the basis for energy efficiency measures, internal cost allocations or the monitoring of load profiles.Precise measurement and flexible integrationIn addition to active energy (kWh), this energy meter also measures reactive energy (kvarh), active power (kW), reactive power (kvar), apparent power (kVA), current (A), voltage (V), frequency (Hz), power factor (PF) and total harmonic distortion (THD) for voltage and current. The integrated Modbus RTU interface via RS485 enables all these values to be queried by systems such as data loggers, PLC controllers or energy management software. Direct measurement up to 100A eliminates the need for complex installation and configuration of external current transformers in many standard applications.Simple installation and operationThe SDM630-M is quick and easy to install on a standard DIN rail in electrical distribution boards. The large, illuminated LCD display enables the most important measured values to be read directly on site. The buttons on the front can be used to navigate intuitively through the various display menus in order to view all the recorded parameters or make basic settings. Features  ModelEastron SDM630-M Modbus ApplicationThree-phase energy meter MeasurementActive/reactive energy (kWh/kvarh),Voltage (V), current (A), power (W/VA/var),Power factor, frequency (Hz) Power supply types3-phase (3p4w, 3p3w), 1-phase (1p2w) Rated voltage (V)3x230/400 V AC Rated current (A)10(100) A (direct measurement) Accuracy classCl. 1 (active energy) / Cl. B (MID) InterfaceModbus RTU (RS485) MountingDIN rail (DIN rail) Dimensions (W x H x D in mm)72 x 100 x 66 (4 modules) Weight (g)approx. 300  FAQs about the Eastron SDM630-M energy meterWhat is the difference between the SDM630-M and other SDM630 variants?The "M" in the designation stands for the integrated Modbus RTU interface. There are also variants with pulse outputs (e.g. SDM630-V1/-V2), with M-Bus interface or as MID-calibrated versions for billing purposes (SDM630-Modbus-MID).Do I need external current transformers for this meter?No, this model is designed for Direct measurement of currents up to 100 amperes per phase. No external current transformers (CTs) are required as long as this current range is not exceeded. Special CT meters (e.g. SDM630MCT) are available for higher currents.Is this meter suitable for official billing (e.g. with the energy supplier)?No, this standard model is usually not MID-calibrated and must therefore not be used for billing to the nearest kilowatt hour. It is primarily intended for monitoring purposes and internal cost allocation. For billing purposes, you need a variant with MID approval (e.g. SDM630-Modbus-MID).How is the data read out via Modbus?To read out the data, you need a Modbus master (e.g. a data logger, a PLC, a Raspberry Pi or a PC with appropriate software and an RS485 interface). The master sends queries to the address of the meter in the RS485 network and reads the values from the defined Modbus registers. The register assignment can be found in the manual for the meter.