The QBM11-1 is a compact, cost-effective single-phase electricity conventional meter designed to measure active energy and demand.Manufactured using advanced technology and focused on core functionality, it offers exceptional value for money; it features non-volatile memory for long-term data storage and supports IR meter reading. The "Neutral Missing" detection function is available as an option.
High-Accuracy Basic Engine: Delivers stable Class 1.0 active measurement precision across universal global operational voltages (110V to 240V) and adaptive rated current spans up to 100A max.
Granular Hardware Interface: Features a specialized 6+2 digit segment layout, storing multi-year energy logs in secure non-volatile storage blocks alongside 15-minute interval block maximum demand analytics.
Field Diagnostics & Safety: Retains passive Read Without Main Power (RWP) screen functionality for continuous power-cut visibility, integrated with dynamic multi-parameter tracking for real-time kW, V, A, kVA, kVar, CosΦ, and Hz network health checks.
1. Bi-directional measurement of active energy.
2.8 digits display for energy and a real-time clock, 7 digits for serial No. and instantaneous value measurement.
3. Block maximum demand with Yearly billing; time intervals are 15 minutes.
4. Supply more tamper types, Neutral line sensor for tampering-proof, detecting bypass, neutral line earthed, etc.
5. Neutral missing start power: 100W.
6. Instantaneous value measurement (kW, V, A, kVA, kVar, CosΦ, Hz).
7. Display readable without main power (RWP).
8. LCD backlights to increase readability in low light conditions.
| Specifications | QBM11-1 | |
| Accuracy | Active | 1.0 |
| Vollage | Rated current | 110V,120V,220V,230V,240V |
| Range | 0.8Un-1.2Un | |
| Limit | 0.7Un-1.3Un | |
| Frequency | 50Hz/60Hz | |
| Basic Current(lb) | Range | 5A,10A |
| Maximum Current(lmax) | Range | 40A,60A,80A,100A |
| Starting Current | 0.4%lb | |
| Display | Type | LCD |
| Digit | 6+2+8 | |
| Power Consumption |
Voltage Circuit | ≤2.0W,10VA |
| Current Girauit | ≤4VA | |
| Communication | Interface | \ |
| Temperature Condition | Work Temperature | -25℃~+65℃ |
| Storage Temperature | -35℃~+75℃ | |
| Humidity | ≤85% | |
| IP degree | IP54 | |
| Dimension | 194×128×55mm | |
| Weight | Net weight | 0.46kg |
| Weight | 0.5kg | |