E650 E850 Landis Gyr Industrial Meter Multi Function Settlement Meter ZMQ202 ZMD402 Gateway

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

● Typical technical data

Measurement accuracy: active 0.2S level, reactive 0.5/1.0 level