DDSU666
Smart Meter
Quick Guide
Issue: 110-01
Date: 2024-12
Product Description
1.1 Outline and mounting dimensions
| Model | Wiring Method |
modulus | Dimensions (L*W*H) mm |
Suttle(kg) | Rail dimension |
| DDSU666 Series |
Direct connection |
1 | 100×18×65.5 | About 0.08 | DIN35 standard guide rails |
NOTE
The unnoted tolerance is ±1mm;
The appearance, size and information are subject to actual objects.
1.2 Product performance specifications
| Model | DDSU666 |
| Current specification | 0.25-5(80)A |
| Access method | Direct connection |
| Nominal voltage | 220V…240V |
| Frequency | 50/60Hz |
| Current measuring range | 0~80A |
| Voltage measuring range | 176V~253V |
| Accuracy class | Class B(Class 1) |
| Power grid system | single phase |
| Baud rate | 1200bps/2400bps/4800bps/9600bps(default 9600bps)/19200bps/115200bps |
| Temperature | -25℃~+55℃(nominal),-40℃~+70℃(ultimate) |
| Way to install | Rail mounting |
| Authentication | CE,RCM,MID |
Install DDSU666
Installing cables
3.1 Prepare Cables
- 0.25~5(80)A wiring – Direct connection
| Cables | Port | Port number |
Type | Conductor Cross-sectional Area Range |
Outer Diameter |
Source |
| Voltage and Current Cable |
N/UN | 3 | Multi-core Outdoor Copper |
0.25mm2-1.5 mm2 | 4mm-1 1 mm | Prepared by the customer |
| ‘JUL. I* | 1 | 25mm2 | 10mm | |||
| I | 2 | Cable |
- Communications cable
| Cables | Port | Port number |
Type | Conductor Cross-sectional Area Range |
Outer Diameter |
Source |
| Voltage and Current Cable |
N/UN | 3 | Multi-core Outdoor Copper Cable |
0.25mm2-1.5mm2 | 4mm-1 I mm | Prepared by the customer |
| L/UL, I* | 1 | 25mm2 | lOmm | |||
| I | 2 |
NOTE
The maximum torque for terminal screws 1, 2 ,3is 1.7 N·m, and the recommended torque is 0.9 N·m to 1.1
N·m. The maximum torque for terminal screws 24 and 25 is 0.4 N·m, and the recommended torque is 0.15
N·m to 0.25 N·m.
3.2 Wiring Diagram
- Direct connection
Displays project and parameter Settings
4.1 Display
When the meter is powered on, it will display the software version number and CRC check code.
Software Version:V104,CRC check code:0x55d7. The key is used to switch the display interface.
| No. | Display Interface | Instruction |
| Display when power on | ||
| 1 |  |
Software version:V104 |
| 2 |  |
CRC check code:0x55d7 |
| Auto display | ||
| 3 |  |
Means the combined active total electrical energy, the unit is “kWh”, the left picture is 2.200kWh. |
| 4 |  |
the current display voltage is U, the unit is “ V”, the left picture is U=220.0V. |
| 5 |  |
the current display current is I, the unit is “A ”, the left picture is I=5.000A. |
| 6 |  |
the current display is the active power P， the unit is “kW” ，the left picture is P=1.100kW. |
| 7 |  |
the current display is the power factor Ft， the left picture is Ft=1.000. |
| 8 |  |
the current display is frequency F, the left picture is F=50.00Hz. |
| 9 |  |
the current communication protocol is Modbus. |
| 10 |  |
the current communication address of Modbus is 1. |
| 11 |  |
Represents 8 data bits, no effect bit and one stop bit of the current communication protocol. |
| 12 |  |
the current communication baud rate is 9600. |
4.2 Parameter setting operation example
Description of pressing key:As shown in the following flowchart, long press the button and lift it to display the screen to enter the Setting ModBus address screen. Press the button again to modify the ModBus address. The address range of the button can be set to 1-247.
NOTE
Communication parameters are configured for the smart power sensor prior to delivery. If the communication is abnormal, check and set parameters.
Diagnosis, analysis and troubleshooting of common faults
| Fault phenomenon | Reason analysis | Elimination |
| No display after the instrument being powered on |
Incorrect wiring mode; Abnormal voltage supplied for theinstrument | 1.If the wiring mode is incorrect, please connect based on the correct wiring mode (see the wiring diagram). 2.If the supplied voltage is abnormal, please supply the voltage on the instrument specification. If this is not the problem above, contact your local supplier |
Warranty and Service
The manufacturer implements three guarantees for product quality. Within 18 months from the date of delivery, if the user fully complies with the provisions of this manual and the factory seal is still intact, the
instrument is found damaged during use, and the company is responsible for free repair or replacement.
Environmental
Dear customer ：
Please help us do one thing, when this product at the end of its life, in order to protect our environment, please do a good job of recycling the product or its parts and materials. Please also dispose of materials that cannot be recycled. Thank you very much for your cooperation and support.
Statement
- The products, services or features purchased by you are subject to the commercial contracts and terms signed with the Company, and all or part of the products, services or features described in this manual may not be included in the products purchased by you.
- Except as otherwise agreed in the contract, the Company makes no representations or warranties, express or implied, about the contents of this specification.
- The information in this brochure is subject to change without prior notice.
- The Company shall not be liable for indirect losses arising from the provision, display or use of this material.
Manufacturer Information
| Manufacturer | Zhejiang Chint IoT Technology Co.,Ltd. |
| Address | Wenzhou Bridge Industrial Park, Beibaixiang Town, Yueqing City, Wenzhou City, Zhejiang Province, China. |
| Tel. | +86-577-62877777 |
| Postcode | 325603 |
| FAX | +86-400-8177777 |
| Service Hotline | +86-577-62789987 |
| Website | http://aiot.chint.com |
| ztwl@chint.com |
Documents / Resources
 |
CHNT DDSU666 Series Single Phase Smart Meter [pdf] User Guide 666-110, DDSU666 Series Single Phase Smart Meter, DDSU666 Series, Single Phase Smart Meter, Smart Meter, Meter |