TOMZN DTS238-7 TY

Contents

Tuya 3 Phase Din Rail WIFI Smart Energy Meter User Manual

Model: DTS238-7 TY

Brand: TOMZN

1. Safety Information

Please read this manual carefully before installation and operation. Keep this manual for future reference.

  • Professional Installation: After receiving the product, installation and operation must be performed by a qualified electrical professional.
  • Flammable Materials: Do not place the device near flammable materials.
  • Ventilation: Ensure adequate ventilation during operation to prevent overheating.
  • Storage: Disconnect from power and store properly when not in use for extended periods.
  • Packaging Warning: To avoid danger of suffocation, keep packaging away from babies and children. Do not use this bag in cribs, beds, carriages, or playpens. This bag is not a toy.

2. Product Overview

The TOMZN DTS238-7 TY is a smart 3-phase energy meter designed for monitoring power consumption. It features Wi-Fi connectivity, allowing remote control and monitoring via the Tuya or Smart Life mobile application. This device is suitable for residential, office, commercial, and industrial buildings to help save energy and ensure electrical safety.

Key features include:

  • Remote ON/OFF control via Tuya/Smart Life APP.
  • Measurement of total active energy (kWh).
  • Real-time display of Voltage, Current, Active Power, Reactive Power, Power Factor, Frequency, and total Energy kWh on an LCD.
  • Timer control and delay time cut-off functions.
  • Compatibility with smart sound equipment like Alexa and Google Assistant for voice control.
  • 35mm DIN rail installation.
Front view of the TOMZN DTS238-7 TY 3 Phase Din Rail WIFI Smart Energy Meter
Front view of the TOMZN DTS238-7 TY 3 Phase Din Rail WIFI Smart Energy Meter, showing the LCD display and buttons. A smartphone screen next to it indicates app connectivity.

3. Specifications

Parameter Value
Model Number DTS238-7 TY
Brand Name TOMZN
Power Supply AC
Rated Voltage 3*120V, 3*220V, 3*230V, 3*240V (50-60Hz)
Rated Current 60A (Max Operating Current: 50A - 79A)
Phase Three
Display Type Digital Only (LCD)
Accuracy Class Class 1 (IEC62053-21)
Measuring Energy Range 999999.9 kWh
Pulse Frequency 400imp/kWh
Operating Temperature -25 to 70 degree Celsius
Dimensions 126mm (Length) * 98mm (Height) * 52mm (Width)
Installation 35mm DIN Rail
Wireless Network 802.11b/g/n, 2.4Ghz only (does not support 5Ghz)
Certification CE
Table of 3 Phase WiFi Energy Meter specifications and button explanations
Detailed specifications and button functions for the DTS238-7 TY meter.
Dimension diagram of the energy meter
Dimension diagram of the energy meter, showing length, height, and width measurements. (Length A: 126mm, Height B: 98mm, Height C: 35.5mm, Width D: 52mm, Height E: 45.5mm, Length F: 78mm).

4. Setup

4.1 Unpacking

Carefully remove the energy meter from its packaging. Inspect the device for any signs of damage. If any damage is found, do not proceed with installation and contact customer support.

4.2 Installation

The DTS238-7 TY is designed for 35mm DIN rail mounting. Ensure the power supply is disconnected before beginning installation.

  1. Mount the meter securely onto a standard 35mm DIN rail.
  2. Connect the equipment in accordance with the wiring diagram specifications. This is a 3-phase meter, so ensure all three phases (L1, L2, L3) and neutral (N) are correctly wired.
  3. After wiring, ensure all connections are tight and secure.
Easy installation diagram showing puncture connection and rail mounting for the energy meter
Wiring diagram for the 3-phase energy meter, showing puncture connections for phases A, B, C, and Neutral (N), and how it mounts on a DIN rail.

4.3 App Connection (Tuya / Smart Life)

To utilize the smart features, connect the meter to the Tuya Smart or Smart Life application.

  1. Download the App: Download the "SMART LIFE" or "Tuya Smart" app from Google Play Store or Apple App Store.
  2. Power On: Ensure the meter is powered on.
  3. Enter Pairing Mode: Press and hold the 'SET' button on the meter for more than 5 seconds. The Wi-Fi LED indicator will flash rapidly, indicating it's in pairing mode.
  4. Add Device in App:
    • Open the app and register/log in.
    • Tap the '+' icon to add a new device.
    • Select "Electrical" -> "Energy Meter" or search for the device type.
    • Follow the on-screen instructions to confirm the Wi-Fi indicator is flashing.
    • Enter your 2.4GHz Wi-Fi network name and password. (Note: This meter only supports 2.4G Wireless Network, NOT for 5G).
    • The app will search for and connect to the device. Once connected, you can rename the device and begin monitoring.
SMARTLIFE software instruction steps for app connection
Visual guide for connecting the energy meter to the Smart Life app, including steps for device discovery and Wi-Fi configuration.

5. Operation

5.1 On-Screen Display Explanation

The LCD display on the meter provides real-time information about your electrical consumption. Here's a breakdown of common indicators:

On-screen display explanation of various parameters
Detailed explanation of the LCD display elements, including Impulse constant, Total active energy, Export active energy, Interval active energy, A/B/C phase real current, A/B/C phase real voltage, Total conjunction active power, A/B/C phase real active power, Total conjunction reactive power, A/B/C phase real reactive power, Total conjunction power factor, A/B/C phase real power factor, and Frequency.
  • 1. Impulse constant: Indicates the number of pulses per kWh.
  • 2. Total active energy: Cumulative active energy consumption in kWh.
  • 3. Export active energy: Active energy exported (if applicable).
  • 4. Interval active energy: Active energy consumed within a specific interval.
  • 5-7. IA, IB, IC: Real current for phases A, B, and C respectively.
  • 8-10. UA, UB, UC: Real voltage for phases A, B, and C respectively.
  • 11. P: Total conjunction active power.
  • 12-14. PA, PB, PC: Real active power for phases A, B, and C respectively.
  • 15. q: Total conjunction reactive power.
  • 16-18. qA, qB, qC: Real reactive power for phases A, B, and C respectively.
  • 19. PF: Total conjunction power factor.
  • 20-22. PFA, PFb, PFc: Real power factor for phases A, B, and C respectively.
  • 23. F: Frequency.

5.2 Remote Control and Monitoring

Once connected to the Tuya/Smart Life app, you can:

  • Remote ON/OFF: Turn the power supply to the connected circuit on or off from anywhere.
  • Energy Monitoring: View real-time kWh, RMS current, voltage, and active power (note: active power, current, and voltage are typically shown for A phase, and will be the same for all 3 phases if balanced).
  • Historical Data: Access history active energy consumption records.
Remote control function with app and people in background
The energy meter can be remotely controlled and monitored via a smartphone app, allowing users to manage power from anywhere.
History active energy consumption records and RMS current/voltage
The app displays historical active energy consumption records and allows checking of RMS current and voltage.

5.3 Timer Control Function

The app allows you to set schedules for automatic power ON/OFF for the connected circuit.

  • Scheduling: Set specific time periods for the meter to turn on or off.
  • Delay Time Cut-off: Configure a delay for power cut-off.
Timer control function with app schedule
Screenshot of the app's schedule interface, demonstrating how to set timer controls for the energy meter.

5.4 Voice Control Function

The meter can be integrated with smart home assistants for voice commands.

  • Compatibility: Connects to smart sound equipment compatible with Tuya/Smart Life, such as Amazon Alexa and Google Assistant.
  • Commands: Use voice commands to control the ON/OFF state of the meter.
Voice control function with Alexa and Google Assistant
Illustration of the voice control feature, showing interaction with Alexa and Google Assistant to control the energy meter.

6. Maintenance

  • Cleaning: Use a dry, soft cloth to clean the exterior of the meter. Do not use liquid cleaners or solvents.
  • Ventilation: Regularly check that the installation area has adequate ventilation and is free from obstructions.
  • Connections: Periodically inspect wiring connections to ensure they remain secure.
  • Storage: If the device is to be stored for an extended period, disconnect it from the power supply and store it in a dry, cool place.

7. Troubleshooting

Problem Possible Cause / Solution
Wi-Fi LED not flashing or not connecting to app
  • Ensure you are pressing the 'SET' button for more than 5 seconds to enter pairing mode.
  • Verify your Wi-Fi network is 2.4GHz. The meter does not support 5GHz networks.
  • Check Wi-Fi signal strength at the meter's location.
  • Ensure correct Wi-Fi password is entered in the app.
  • Restart your Wi-Fi router and try again.
Meter not displaying readings
  • Check power supply to the meter.
  • Verify all wiring connections are correct and secure according to the installation diagram.
  • If the display is blank, there might be a power issue or internal fault.
Impulse LED not flashing
  • The Impulse LED flashes at a speed corresponding to the current load of the meter. If there is no load or very low load, it may not flash or flash very slowly.
  • Ensure there is an active load on the circuit being measured.
Cannot reset energy counter to zero

The energy counter on this device is typically cumulative and cannot be manually reset to zero by the user. It is designed to track total energy consumption over its lifetime. For billing or specific project monitoring, note down the initial reading or use the app's historical data features to track consumption over desired periods.

8. User Tips

  • App Integration: The meter is compatible with other Tuya products (e.g., Wi-Fi sockets, LEDs, fans), allowing for a unified smart home experience.
  • Energy Management: Regularly review your energy consumption history in the app to identify patterns and opportunities for energy saving.
  • Voice Control Setup: When setting up voice control with Alexa or Google Assistant, ensure your Tuya/Smart Life account is linked correctly in the assistant's app.
  • Wi-Fi Stability: For optimal performance, ensure the meter is installed within a good range of your 2.4GHz Wi-Fi router.

9. Warranty & Support

This product complies with the following applicable regulations and harmonized standards:

  • Low Voltage Directive 2014/35/EU
  • Electromagnetic Compatibility Directive 2014/30/EU
  • Restriction of the use of certain hazardous substances (RoHS) Directive 2011/65/EU

For detailed information, troubleshooting, or further assistance, please refer to the official user manual PDF available at: User Manual (PDF).

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