Applications

The HWM131 series are DIN rail three phase electronic active & reactive integration energy meters. They adopt many advanced technologies of research and development, like microelectronic-techniques, specialized large-scale IC (integrated circuit), digital sampling and processing technology, SMT technique, and so on. Their technical performances completely conform to International Standards IEC 62053-21 for Class 1 three phase active energy meter and International Standards IEC 62053 -23 for Class 2 three phase reactive energy meter. Theycan accurately measure the load active energy and reactive energy in three phase four wire AC networks of rated frequency 50Hz or 60Hz. The HWIM131 series have mutiple configurations for option, to be suitable with the various market demands. They have features with excellent long-term reliability, small volume, light weight, pertect appearance, easy installation, etc.

Functions and features

◆ Available as 35mm DIN standard rail mounted, conforming to Standards DIN EN 50022. aswell as front PANEL mounted (the center distance between two mounting holes is 63mm).

◆ Two mounted methods above are optional for user.

◆ 10 pole width (modulus 12 .5mm), complying with Standards JB/T7121-1993.

◆ Can select the inside far infrared data communication port and RS485 data communication port. The communication protocol complies with Standards DL/T645-1997. The other communication protocol can also be option.

◆ S-connection (inlet wire from bottom and outlet wire on top) has two types; direct connection and CT connection for option. For CT connection, 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 direct connection meter is 6+1 digits 999999.1) LCD.

◆ The CT connection meter is 7 digits LCD display: 5+2 digits (only at CT rate is 5:5A) or 7 integers, depended on the setting CT rate.

◆ Can select the maintenance free lithium battery inside for LCD display to read the meter 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 on each phase, energy impulse signal and data communication state.

◆ Automatic detection for the load current flow direction and will be indicated by LED.

◆ Measure the energy consumption in one direction on three phase, which is not related with the load current flow direction at all, complying with Standards IEC 62053-21 and IEC 62053-23.

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