1. Izdelek je končanview
The Growatt TPM-E Smart Meter DTSU666 is a high-precision three-phase energy meter designed for integration into photovoltaic (PV) systems, specifically compatible with Growatt MIN 6000TL-X inverters. This DIN rail mounted device measures various electrical parameters, providing essential data for system monitoring and management. It features an LCD display for local readings and RS485 communication for remote data acquisition. The meter itself is manufactured by CHNT.

Slika 1: Spredaj view of the CHNT DTSU666 Three-Phase Smart Meter, showing LCD display and control buttons (SET, ESC, arrow).
2. Specifikacije
The following table details the technical specifications of the DTSU666 Smart Meter:

Figure 2: Detailed specifications table for the DTSU666 meter.
| Kategorija | Parameter | Vrednost |
|---|---|---|
| Merjenje | Skladnost | IEC62052-11 IEC62053-21 |
| Vrsta povezave | 3P4W | |
| Accuracy (active) | 1.0. razred | |
| voltage | Nominalni voltage (un) | 3x220/380V, 3x57.7/100V |
| Območje delovanja | 0.7 Un ~ 1.2 Un | |
| Poraba energije | ≤1 W, 5 VA | |
| Trenutno | CT | 1.5(6)A |
| Direct Connect (DC) | 5(80)A | |
| Pogostost | Delovna frekvenca | 50Hz ali 60Hz |
| LCD zaslon | Znaki | 7 znakov 7-segmentnega zaslona |
| Digital size | 5.3mm × 2.8mm | |
| LED zaslon | Utripa | Število bliskov na kWh |
| Izmerjene vrednosti | energija | Skupaj kWh, Skupaj kvarh |
| Moč | Trenutna kW, kvar | |
| Trenutno | Trenutne Irms | |
| voltage | Trenutne VRMS | |
| drugo | Frequency, power factor | |
| Komunikacije | Vmesnik | RS485 |
| Protokol | Modbus and DL/T | |
| Okoljski | Operating range limit | -40°C do +75°C |
| Storage range limit | -40°C do +85°C | |
| Relativna vlažnost | ≤95 % RH | |
| Zaščita pred vdorom | IP54 | |
| Mere in teža | Dimenzije (D x Š x V) | 98 mm × 65 mm × 72 mm |
| Teža | 0.4 kg (pribl.) |

Figure 3: Dimensional drawing of the DTSU666 meter, showing front, side, and top views z merami v milimetrih.
3. Vsebina paketa
Po odprtju paketa preverite, ali so vsi predmeti prisotni in nepoškodovani. Če kateri koli predmet manjka ali je poškodovan, se nemudoma obrnite na dobavitelja.
- 1x Growatt TPM-E Smart Meter DTSU666 (CHNT DSSU666)
- 1x RS485 Communication Cable (length may vary)
- 1x Quick Start Guide / Basic Documentation (typical inclusion)

Figure 4: Typical package contents, including the DTSU666 meter and a coiled communication cable.
4. Varnostne informacije
OPOZORILO: Nevarnost električnega udara. Namestitev in vzdrževanje sme izvajati samo usposobljeno osebje.
- Always disconnect power before installing or servicing the meter.
- Prepričajte se, da je vsa napeljava skladna z lokalnimi in nacionalnimi električnimi predpisi.
- Ne uporabljajte merilnika, če je videti poškodovan.
- Keep the meter away from moisture and extreme temperatures outside its specified operating range.
- Zagotovite ustrezno ozemljitev vse priključene opreme.
5. Namestitev in nastavitev
5.1 Montaža
The DTSU666 is designed for DIN rail mounting. Securely attach the meter to a standard 35mm DIN rail within an electrical enclosure. Ensure adequate ventilation around the meter.

Slika 5: stran view of the DTSU666 meter, illustrating the DIN rail mounting mechanism.
5.2 Žične povezave
Carefully follow the wiring diagram below for connecting the meter to the grid, load, and inverter. Pay close attention to the input (L-in, N-in) and output (L-out, N-out) terminals, as well as the RS485 communication lines.

Figure 6: Wiring diagram for connecting the CHNT DTSU666 meter to an inverter, grid, and load, along with a table detailing meter pin connections.
Opisi terminalov:
- L-in (Pin 1): Grid Live input.
- L-out (Pin 2): AC connector & Load Live output.
- N-in (Pin 3): Grid Neutral input.
- N-out (Pin 4): AC connector & Load Neutral output.
- RS485A (Pin 7): RS485 communication line A (connect to SYS COM Pin 7 RS485A2 on inverter).
- RS485B (Pin 8): RS485 communication line B (connect to SYS COM Pin 8 RS485B2 on inverter).
Opomba: For the Australian market, installers may connect pin 3 or pin 4 to the neutral links/bars as per local regulations.

Slika 7: Zgornji del view of the DTSU666 meter, showing the input terminals (L-in, L-out, N-in, N-out) and RS485 communication terminals.

Slika 8: Spodaj view of the DTSU666 meter, showing the main power terminals.
6. Delovanje
Once properly installed and powered, the DTSU666 meter will automatically begin measuring electrical parameters. The LCD display provides real-time readings of various values such as total kWh, instantaneous power, voltage, current, and frequency.
6.1 Navigacija po zaslonu
Use the buttons on the front panel to navigate through the display menus:
- Gumb SET: Typically used to enter menu settings or confirm selections.
- Gumb ESC: Used to exit a menu or cancel an action.
- Arrow button (right): Used to scroll through different display parameters or menu options.
Refer to the detailed operational guide provided by Growatt for specific menu structures and parameter configurations, especially for integration with Growatt inverters.
7. Vzdrževanje
The DTSU666 Smart Meter is designed for reliable, long-term operation with minimal maintenance. However, periodic checks are recommended:
- Čiščenje: Gently wipe the meter's exterior with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Preverjanje povezave: Občasno preverite vse ožičene povezave, da se prepričate, da so varne in brez korozije.
- Okoljski pogoji: Zagotovite, da delovno okolje ostane znotraj določenih meja temperature in vlažnosti.
- Posodobitve vdelane programske opreme: If applicable, consult Growatt's support resources for information on firmware updates for improved performance or new features.
8. Odpravljanje težav
If you encounter issues with your DTSU666 Smart Meter, consider the following troubleshooting steps:
- Brez zaslona/napajanja:
- Check if the main power supply to the meter is active.
- Verify all power wiring connections (L-in, N-in) are correct and secure.
- Ensure the circuit breaker or fuse protecting the meter is not tripped or blown.
- Nepravilni odčitki:
- Confirm that the current transformers (CTs) are correctly installed and oriented (if applicable for your model/setup).
- Preverite, ali voltage and current wiring matches the system configuration (e.g., 3-phase, 4-wire).
- Check for any loose connections that might affect measurement accuracy.
- Težave s komunikacijo (RS485):
- Ensure the RS485 A and B lines are correctly connected between the meter and the inverter.
- Check for proper termination resistors on the RS485 bus if required by the system design.
- Verify communication settings (baud rate, parity, data bits, stop bits) on both the meter and the inverter.
- Meter Not Responding to Buttons:
- Try a soft reset by cycling power to the meter (turn off, wait 30 seconds, turn on).
- Če težave ne odpravite, se obrnite na tehnično podporo.
For further assistance, refer to the comprehensive Growatt inverter manual or contact Growatt technical support.
9. Garancija in podpora
For warranty information, please refer to the warranty card included with your product or visit the official Growatt webspletno mesto. Shranite račun kot dokazilo o nakupu.
For technical support, troubleshooting, or service inquiries, please contact your authorized Growatt dealer or Growatt customer service directly. Provide your product model number (DTSU666) and serial number when seeking support.





