Electricity Meter - DIN Rail Multi-rate Electricity Meter

Functions for LEM031 and LEM041 Series

● Measure the active energy consumption on single phase or three phase AC power grid of rated frequency 50Hz or 60Hz, complying with Standards IEC 62053-21 and IEC 62052-11. Can select time-of-use metering in 3 tariffs. Can set 12 daily intervals. Can freely set the date in every month to read meter automatically. Can set single tariff at weekends.

● Can select 2 tariffs metering, equipped with the tariff setting port, if the input control voltage is 0 - 90 Vac, the setting tariff is F1. If the input control voltage is 150 - 400 Vac, the setting tariff is F2. Tariff transduction is controlled by the external timer or similar device.

● The meter with time-of-use metering in 3 tariffs has clock chip inside and maintenance free lithium battery inside. The battery capacity can be detected in real time and displayed, keeping the data for 12 months.

● 7 digits LCD with two options: cycle display (default) or push-bottom display item by item. Can set the cycle display interval. Can select the data item of display. The decimal of the data display can be set to be 1 or 2 digits.

● Can select the inside far infrared data communication port and RS485 data communication port for meter setting or reading meter. The meter setting has password protection. The communication protocol complies with Standards DL/T645-1997, can also select the Modbus-RTU communication protocol.

● With a non-volatile memory, keep the data permanently while the power is cut.

● Equipped with a polarity passive energy impulse output terminal, conforming to Standards IEC 62053-31 and DIN 43864.

● LEDs indicate separately the power state, the energy impulse signal, load current flow direction, current tariff state and data communication state.

● CT connection three phase meter, there are 27 kinds CT rates to set, after setting CT rate, we can read the meter directly, no need multiplying the CT rate. The CT connection meter is 7 digits LCD display: 5+2 digits (only at CT rate is 5:5A) or 7 integers, which is depended on the setting CT rate.

Functions for LEM131 Series

● Measure the active energy and reactive energy consumption on single phase or three phase AC power grid of rated frequency 50Hz or 60Hz, complying with Standards IEC 62053-21 and IEC 62053-23.

● Can select measure active max. demand (kWh MD), reactive max. demand (kvarh MD), actual active power (kW), actual reactive power (kvar), actual apparent power (kVA), actual phase voltage (V), actual phase current (A), actual frequency (Hz), actual power factor (PF).

● 7 digits LCD with two options: cycle display (default) or push-bottom display item by item. Can set the cycle display interval. Can select the data item of display. The decimal of the data display can be set to be 1 or 2 digits.

● Can select the inside far infrared data communication port and RS485 data communication port for meter setting or reading meter. The meter setting has password protection. The communication protocol complies with Standards DL/T645-1997, can also select the Modbus-RTU communication protocol.

● Can select the maintenance free lithium battery inside for LCD display to read the meter while the power is cut.

● With a non-volatile memory, keep the data permanently while the power is cut.

● Equipped with 2 polarity passive impulse output terminals: active energy and reactive energy. The output impulse rate has 4 types: 0.01，0.1，1，10 kWh or kvarh/Pulse, which the user can set to any needed type, conforming to Standards IEC 62053-31 and DIN 43864.

● LEDs indicate separately the power state, the energy impulse signal, load current flow direction and data communication state.

● CT connection three phase meter, there are 27 kinds CT rates to set, after setting CT rate, we can read the meter directly, no need multiplying the CT rate. The CT connection meter is 7 digits LCD display: 5+2 digits (only at CT rate is 5:5A) or 7 integers, which is depended on the setting CT rate.

Structure characteristic

● Available as 35mm DIN standard rail mounted, conforming to Standards DIN EN 50022, as well as front PANEL mounted (the center distance between two mounting holes is 63mm or 67mm). Two mounted methods above are optional for user.

● LEM031 series width is 6 pole, LEM041 series and LEM131 series width is 10 pole (modulus 12.5mm), complying with standard JB/T7121-1993.

● Milk white flame retardant PC meter case and internal structure parts and the Class Ⅱ insulation protection design, with the characteristics of moistureproof, flame retardant, thermostability, good weather resistance, high rigidity and excellent insulation property, etc., to ensure a longer service life and a more stylish appearance.

● The short terminal cover is made with the transparent PC, to reduce the installation space and is convenient for centralized installation.