Feature 1 Light weight counter meter keeps excellent long‑term reliability with perfect appearance and easy installation, etc. 2 DTS1891 three‑phase electronic DIN rail active energy meter adopts new type of microelectronics technology, imported large‑scale integrated circuits, advanced technology using digital technology and SMT technology, etc. 3 Insulation performance keeps that AC voltage 4kv for 1 minute, 1.2 / 50us waveform pulse voltage of 6kv. 4 Completely in line with the relevant technical requirements of the class 1 active energy meter specified by the international standard IEC62053‑21. 5 Rail energy meter keeps ability to directly and accurately measure the active power consumption of the load in AC network with a rated frequency of 50 Hz.Item Type: Rail energy meterModel: DTS1891Product Material: Pure copper + plasticVoltage: 3 x 230V/400VCurrent: 3 x 5 (100) APower: 400imp/kwh 50HzInsulation Performance: AC voltage 4kv for 1 minute, 1.2 / 50us waveform pulse voltage 6kvFunctions and Features:1. 35mm standard DIN rail installation, in line with standard DIN EN50022.2. Six widths (modulus 12.5mm), in line with standard DIN43880.3. Standard configuration 6 + 1 (999999.1kWh) LCD display.4. Standard configuration of passive pulse output (polarity), long-distance passive pulse output (no polarity) can be selected. It also complies with IEC 62053-31 and DIN 43864 standards, making it easy to contact with various AMR systems.5. Two LEDs indicate power status (green) and energy pulse signal (red).6. Direction measurement of AC active power consumption. The direction in which the load current flows does not matter. Meet the standard IEC62053-21.7. Direct connection operation, two types of wiring can be selected. The standard configuration is S-type wiring, but U-type wiring is possible.8. Extend the terminal cover to protect the safety of use. Package List1 x Rail Energy Meter1 x User Manual