EN
The QSM31-1 is a powerful three-phase smart meter engineered for advanced utility, commercial, and industrial applications. Designed to accommodate both prepaid and postpaid services, it combines precision metering with comprehensive energy and network monitoring capabilities.With modular communication options and an expandable platform architecture, the QSM31 adapts easily to evolving AMI, smart grid, and energy management requirements.
Engineering Architecture: Developed on a high-reliability hardware platform compliant with strict IEC 62052-11 and IEC 60555-41 international standards, the QSM31-1 delivers different accuracy active measurement precision across extended voltage ratings (3×57.7/100V to 3×240/415V).
Features sophisticated digital signal processing capable of sampling both fundamental power vectors and complex grid harmonics (THD), granting utilities a granular look into grid health and power factor efficiency.
Interoperable Utility Backbone: Embraces the open DLMS/COSEM (Mode E) protocol alongside an expandable communication module (GPRS/3G/4G). This architecture allows operators to seamlessly scale up their centralized AMI/AMR infrastructure while retaining local RS485 and optical backup interfaces.
1. Open protocol: DLMS/COSEM (E mode)
2. Prepayment and post-payment mode switchable for users’ convenience
3. Local and remote firmware upgrades.
4. Plug-and-play communication module, such as GPRS, 3G, 4G, etc.
5. Internal switch relay for load demand control by configuration or remote communication
1. Measuring forward and reverse active energy in tariff.
2. Measuring forward and reverse reactive energy in tariff.
3. Instantaneous value measurement.
4. Up to 4 tariffs
5. Up to 8 divisions per day; weekend configurable
6. Up to 4 seasons, working days, and weekend tariff scheme configurable per season.
7.12 months billing data and other frozen data for inquiry.
8. Block or slide mode configurable for maximum demand.
9. Import and export active MD in tariff with time stamp.
10. Import and export reactive MD in tariff with time stamp.
11. Large digit LCD display, easy to read.
12. Display readable without main power (RWP).
13. Standardized OBIS display
14. Backlights to increase readability in low light conditions.
15. Real-time clock: clock with calendar, timing, leap year automatic conversion function.
16. Multiple event detections and records with categories of operation, power grid, and tampering.
17. Base cover or terminal cover open detection and record
18.prepayment is a mode via a numeric token with extended ways of recharging.
19. Channel quantity customized before leaving the factory; up to 8 channels.
20. Data for load profile record configuration
21. External battery replaceable
22. Load profile up to 12 channels
23. Power and energy sampling calculations should include the fundamental and THD in the network
| Specifications | QSM31-1 | |
| Accuracy | Active | 1.0 |
| Reactive | 2.0 | |
| Vollage | Rated current | 3X57.7/100V,3X220/380V,3X230/240V,3X240/415V |
| Range | 0.8Un-1.2Un | |
| Limit | 0.7Un-1.3Un | |
| Frequency | 50Hz/60Hz | |
| Basic Current(lb) | Range | 3X5A,3X10A |
| Maximum Current(lmax) | Range | 3X40A,3X60A,3X80A,3X100A |
| Starting Current | 0.4%lb | |
| Display | Type | LCD |
| Digit | 6+2 | |
| Power Consumption |
Voltage Circuit | ≤2.0W,10VA |
| Current Girauit | ≤4VA | |
| Communication | Interface | OPtical/RS485/M-bus/GPRS/3G/RF/PLC |
| Temperature Condition | Work Temperature | -25℃～+65℃ |
| Storage Temperature | -35℃～+75℃ | |
| Humidity | ≤85% | |
| IP degree | IP54 | |
| Dimension | 269X170X90mm | |
| Weight | Net weight | 1.8kg |
| Weight | 2.2kg | |
English
