Key Features

Benefits

• Supports optimisation of PV self-consumption
• Helps reduce electricity costs through coordinated energy use
• Provides visibility of household energy flows and individual loads
• Supports automated energy management actions based on forecast and consumption data
• Can be integrated into switch or meter cabinet installations

Technical Summary

Type designation HM-20. Energy manager with integrated measuring device. Nominal voltage 230 V/400 V, frequency 50 Hz/±5%. Measurement accuracy 1% with 1000 ms measuring cycle. Standard application is measurement of purchased electricity and grid feed-in at the grid connection point; alternative application is PV generation measurement. Connection to local router via Ethernet cable (10/100 Mbit/s, RJ45). Supports appliance connection via EEBUS, SEMP or switchable radio-controlled socket. Up to 24 devices in the system, of which up to 12 can be appliances in active energy management. Ambient temperature range –25°C to +40°C. Degree of protection IP2X. Self-consumption < 3 W.

Installation Notes

Mount in a switch or meter cabinet on a top-hat rail. Connect to the local router using an Ethernet cable. The unit operates at the grid connection point. Ethernet or WLAN connection via local router is stated for compatible SMA PV inverters and battery systems.

Efficiency

Supports PV self-consumption optimisation and coordinated control of appliances. The datasheet states that it can reduce electricity costs and improve use of self-generated solar energy. Self-consumption is below 3 W.