Smart Meter

14531227 Growatt Smart Meter DTSU 666 (3PH)

The Growatt Smart Meter TPM-C is a high-quality 3-phase energy meter for precise measurement of electricity consumption and grid feed-in. When used with Growatt inverters, it enables the Zero Export function for optimal self-consumption control. Thanks to the RS485-interface and DIN rail mounting, integration is simple and flexible. The LCD display clearly shows real-time data, while its low self-consumption ensures energy-efficient operation. Ideal for residential and commercial solar applications.

€79.00
0 % VAT under § 12 Abs. 3 UStG
14531331 Growatt Smart Meter SPM-C 1-Phase

The Growatt Smart Meter SPM-C monitors single-phase solar power consumption (5A–60A) and enables dynamic feed-in control. With an LCD display, Modbus RTU, IP51-protection, and easy DIN rail mounting, it is precise, user-friendly, and compatible with Growatt inverters.

€49.00
0 % VAT under § 12 Abs. 3 UStG
14531587 Fronius Smart Meter TS 65A-3 - 4,204,110,345

Save money and energy sustainably with the Fronius Smart Meter TS 65A-3 by visualizing and optimizing energy consumption in your PV system. These intelligent, bidirectional electricity meters provide fast, accurate, and reliable data that forms the basis for efficient energy management.

€262.90
0 % VAT under § 12 Abs. 3 UStG
14530145 Growatt Smart Meter TPM-E SDM630 v3

Discover the Growatt Smart Meter 3-Phase Eastron SDM630-Modbus V3 for efficient monitoring of your solar system! This multifunctional LCD three-phase meter offers precise measurements and modern operation on DIN top-hat rails with an S0 Modbus interface.

€159.00
0 % VAT under § 12 Abs. 3 UStG
14530406 SunGrow Smart Energy Meter DTSD1352-C/1 (6A)

With the DTSD1352 3-Phase Smart Energy Meter, you can measure precise electrical values at the grid connection point. This meter is fully compatible with all inverters in the Sungrow CX series (SG33-125CX). Please note that current transformers are not included in the scope of delivery.

€90.00
0 % VAT under § 12 Abs. 3 UStG
14531226 SAJ Smart Meter DTSU 666 100A 3Ph

Three-phase meter up to 100 A for SAJ inverters, RS485-connection. IP54 and operation from −40 to +60 °C, so it works even in an unheated meter cabinet.

€180.00
0 % VAT under § 12 Abs. 3 UStG

A smart meter for the photovoltaic system measures, at the property connection point, how much electricity is currently being drawn and how much is being fed into the grid. The inverter needs this value to charge the storage unit at the right time, to limit the grid feed-in to a specified value and to supply consumers such as a wallbox with surplus electricity. The range includes meters from Fronius, Growatt, SAJ and SunGrow.

Not to be confused with the meter provided by the metering point operator

In everyday language, the term ‘smart meter’ often refers to the intelligent metering system installed and billed by the metering point operator. These meters do not replace that billing meter. They are installed additionally in the meter cupboard or in the sub-distribution board, usually on a DIN rail, and transmit their meter readings via RS485 to inverters or storage systems.

Which meter is compatible with which inverter

Communication depends on the manufacturer. The meter is therefore selected to match the brand and model series of the inverter.

Meters	Phases	Current	Compatible with
Fronius Smart Meter TS 65A-3	three-phase	up to 65 A	Fronius inverter
Growatt SPM-C	single-phase	5 to 60 A	Growatt inverter
Growatt TPM-E (SDM630 v3)	three-phase	Direct measurement up to 80 A	Growatt SPH, MIN XH, MOD
Growatt DTSU 666 (3PH)	three-phase	–	Growatt inverter
SAJ DTSU 666 100A	three-phase	up to 100 A	SAJ inverter
SunGrow DTSD1352-C/1	three-phase	6 A, via current transformer	SunGrow CX Series (SG33-125CX)

In Germany, three-phase domestic connections are standard; a single-phase meter such as the Growatt SPM-C is suitable for single-phase inverters. According to the manufacturer, the current transformers are not included in the scope of delivery for the SunGrow DTSD1352. According to the manufacturer, the Growatt TPM-E measures each phase individually in both directions, enabling a hybrid inverter to distribute the stored electricity with phase-accurate distribution.

Installation and operation

A smart meter is wired into the meter cupboard or the sub-distribution board. This should be carried out by a qualified electrician; ACTEC supplies the meter but does not install it. The protection ratings range from IP20 (SunGrow) via IP51 (Growatt) to IP54 (SAJ), whilst the operating temperature for the SAJ meter is −40 to +60 °C. The manufacturers provide a two-year warranty.

The compatible devices can be found amongst the hybrid inverters and in the inverter range, whilst monitoring accessories such as dongles are available in the inverter accessories section. Anyone wishing to charge their car with surplus energy will also need a wallbox with solar integration.

Frequently asked questions about smart meters for PV systems

Do I need a smart meter for my PV system?

Yes, if you have a storage system, a grid feed-in limit or wish to charge your car with surplus energy. Without a meter, the inverter cannot determine the consumption within the home.

Is every smart meter compatible with every inverter?

No. Communication depends on the manufacturer. Choose the meter specified by your inverter manufacturer for that model series.

Does the smart meter replace my electricity meter?

No. The metering operator’s billing meter remains in place. The solar panel system’s smart meter takes additional readings and sends the data to the inverter and storage system.