DTSU666 - Energy meter Deye - Free user manual and instructions
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| Product Type | Three-Phase Energy Meter |
| Model | DTSU666 |
| Brand | Deye |
| Dimensions | 100 x 100 x 65 mm |
| Weight | Approximately 300 g |
| Power Supply | 3-Phase, 230/400 V AC (L-L/L-N) |
| Rated Current (Ib) | 5 A |
| Maximum Current (Imax) | 65 A |
| Accuracy Class | Class 1 (active energy), Class 2 (reactive energy) |
| Frequency | 50/60 Hz |
| Communication Interface | RS485 Modbus RTU |
| Display | LCD with backlight |
| Measurement Parameters | Active energy (kWh), reactive energy (kVArh), voltage, current, power factor, frequency, demand |
| Operating Temperature | -25°C to +60°C |
| Storage Temperature | -40°C to +70°C |
| Mounting Type | DIN Rail (35 mm) |
| Protection Class | IP51 (indoor use) |
| Certifications | MID, IEC 62053-21, IEC 62053-23 |
| Maintenance | Wipe with a dry cloth; no user-serviceable parts inside |
| Safety | Install by qualified personnel; disconnect power before servicing |
| Spare Parts & Repairability | Contact authorized Deye service center for repairs |
| General Information | User manual available in PDF at notice-facile.com |
Frequently Asked Questions - DTSU666 Deye
How to install the DTSU666 energy meter?
Mount the DTSU666 on a DIN rail inside an electrical panel. Ensure the power supply is disconnected. Connect the three-phase lines (L1, L2, L3) and neutral (N) according to the wiring diagram in the manual. Use CTs (current transformers) if required for high currents. After installation, double-check all connections before powering on.
How to connect the RS485 communication?
The RS485 port uses terminals A and B. Connect to a Modbus RTU master device. Use twisted-pair shielded cable. Set the baud rate and parity via the meter's menu or communication software. Default settings are usually 9600 baud, 8 data bits, no parity, 1 stop bit.
How to read active energy consumption?
On the LCD display, press the button to cycle through screens. Look for the kWh reading for total active energy. It shows imported (+) and exported (-) energy if bidirectional. You can also read via Modbus registers (address 0x0000 for total active energy).
What is the accuracy class of the DTSU666?
The DTSU666 has accuracy Class 1 for active energy (according to IEC 62053-21) and Class 2 for reactive energy (IEC 62053-23). This ensures reliable billing-grade measurements.
How to reset the energy readings?
To reset the energy registers, enter the setup menu by pressing and holding the button for 3 seconds. Navigate to the 'Reset' option. You may need a password (default usually 0000). Confirm the reset. Note: resets may be logged or prohibited depending on local regulations.
Can the DTSU666 be used for single-phase systems?
The DTSU666 is designed for three-phase systems. For single-phase use, it is not recommended as it measures only one phase. However, you can connect it as a single-phase meter by wiring only one phase and neutral, but it will not meter the other phases. Use a single-phase meter instead.
What is the maximum current rating?
The DTSU666 has a rated current (Ib) of 5 A and a maximum current (Imax) of 65 A. For higher currents, use external current transformers (CTs) with appropriate ratio. The meter can measure up to 9999 A via CTs.
How to configure the meter for different CT ratios?
Enter the setup menu by pressing and holding the button. Look for 'CT Ratio' or 'PT Ratio' settings. Set the primary and secondary values of your CT and VT (voltage transformer) if used. The meter will calculate and display the correct scaled values.
What does error code E-01 mean?
Error code E-01 typically indicates a phase error or voltage missing on one or more phases. Check all connections: L1, L2, L3, and neutral. Ensure the voltage supply is present and within range. If the error persists, contact Deye support.
How to obtain the user manual?
You can download the user manual for the DTSU666 for free at notice-facile.com in PDF format. Select your language and provide your email to receive a translated version if needed. The manual contains detailed specifications, wiring diagrams, and troubleshooting.
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USER MANUAL DTSU666 Deye
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Product information
Brand : Deye
Model : DTSU666
Category : Energy meter