Landis+Gyr E650 Electricity Meters industrial and commercial three-phase multi-function high-precision settlement gateway meter E650 E850 ZMQ202 ZMD402
1. Product Introduction
The Landis E850 series of high-end gateway settlement watt-hour meters are specially used for gateway settlement of regional power grids and power plants with high voltage levels, as well as large industrial and commercial users such as electrified railways with frequent load changes. With excellent measurement accuracy, significantly high refresh rate, and long-term stable and reliable operation, they have successfully won the unanimous praise and trust of users around the world.
Widely used in:
Gateway power grids and substations in provinces across the country.
● State Grid UHV and China Southern Grid EHV.
● Guangdong-Hong Kong cross-border power grid, Zhuhai-Macao cross-border power grid, Guangdong-Hainan cross-sea power grid.
● Nuclear power, thermal power, wind power, hydropower, photovoltaic and other power plants, the Three Gorges Hydropower Station on the Yangtze River, pumped storage and other projects.
● Traction station projects on numerous high-speed rail lines.
Basic Functions
● Accuracy 0.2S level
● Application CT/PT connection
● Massive data records
42 test data
42 test data
40 frozen power curves
Power Factor Register
Flow direction register
Power loss
41 diagnostic data
U, l, F, harmonic voltage, current
24 rate registers
4 demand registers P, Q or S
Maximum demand register
64-register power quality voltage sag meter
Can record 256 events and alarms of 128 different types
● Standard features
Three-phase PT circuit and auxiliary power supply are powered in parallel to achieve uninterrupted switching (optional auxiliary power supply is independent)
Internal real-time clock with power backup
Installation support display
One meter with multiple ranges (configurable)
Two sets of load curves (different integration periods)
Contactless meter reading
Supercapacitor can support internal clock operation for more than 20 days
Programmable main pulse output terminal
LCD display with backlight
● Advanced features
Instantaneous value measurements, including voltage, current, phase angle, power factor and grid frequency
Harmonic measurement, including 30th harmonic voltage, current and active energy
Loss measurement
Monitor alarm light indication, can also be set as relay output node
Phase loss and phase sequence error warning
Each phase pressure loss monitoring alarm, etc.
● Configurable communication unit CU
| model | Interface Type | Regulations |
|---|---|---|
| Z6 | RS485, RS485 | DL/T645(97/07), DLMS, IEC1107 |
| Z8 | RS485, RS485, RS485 | DL/T645(97/07), DL/T698.45, DLMS, IEC1107 |
| XE | 10/100BASE-TX, RS485/RS422, RS232 | DLMS, Modbus, IEC608 70-5-104, DLT860 (61850) |
● Typical technical data
Measurement accuracy: active 0.2S level, reactive 0.5/1.0 level
| Reference voltage | Un 3 x 100V, 3 x 110V, 3 x 115V, 3 x 220V, 3 x190V~3 x 230V (user-defined) |
|---|---|
| Measuring voltage range | 70%-115%Un |
| Nominal current | 0.31.2)A, 0.3(6)A, 1(2)A, 1.5(6)A, 5(6)A |
| Starting current | 0.05%In (standard value) |
| Typical power consumption | Current loop 1A: 0.004VA: 5A: 0.09VA; Voltage loop 0.9VA (0.5W) (standard auxiliary power mode) 1.4VA (0.8W) (auxiliary power supply + output contact + communication module) |
| Nominal frequency | fin 50/60Hz, working range 90%~110% |
| Auxiliary power supply | 110-220V AC/DC, 24-125V AC/DC (optional) Maximum power consumption 6VA |
| Calendar clock | Accuracy [5ppm (25°C): Battery powered operation time 10 years: Supercapacitor (no battery) operation] 20 days |
| interface | Support 3 independent RS485 interfaces |
| Protection level | IP51 |
| Installation Dimensions | 173mm(W) x 281.6mm(H) x 75mm(D) |
❓ Landis+Gyr E650 Electricity Meter – FAQ (Utility & Smart Grid Applications)
1. What is the Landis+Gyr E650 electricity meter used for?
The Landis+Gyr E650 is a high-precision smart electricity meter used for accurate energy measurement, billing, and monitoring in residential, commercial, and industrial power systems.
2. Is the E650 suitable for smart grid and AMI systems?
Yes. The E650 is designed for Smart Grid and AMI (Advanced Metering Infrastructure) applications, enabling remote meter reading, load management, and grid optimization.
3. What communication technologies does the E650 support?
It supports multiple communication options such as PLC (Power Line Communication), RF, and wired/wireless interfaces , depending on configuration and project requirements.
4. Can the meter be remotely read and managed?
Yes. The E650 supports remote data reading and management , allowing utilities to collect consumption data and manage loads without on-site visits.
5. Does the E650 record historical energy data?
Yes. It provides detailed load profiles, historical consumption data, and event logs , which are essential for energy analysis and billing systems.
6. Is the Landis+Gyr E650 suitable for industrial applications?
Yes. It is widely used in industrial facilities, commercial buildings, and utility networks , offering reliable performance in demanding environments.
7. Can it integrate with utility backend systems?
Yes. The E650 can be integrated with MDM (Meter Data Management), SCADA systems, and utility billing platforms for centralized energy management.
8. What are the main advantages of using the E650 meter?
It offers high accuracy, strong reliability, smart grid compatibility, remote communication capability, and long-term stability , making it suitable for modern utility infrastructure.