Installation - ABB EQmatic Product Manual

ABB EQmatic
Planning and application

Installation

Connection points
Commercially available connections and distribution boxes can be used at the connection points
between the M-Bus cable and the M-Bus devices.
Labeling
Note
It is recommended to attach permanent labeling to the ends of the M-Bus cable to prevent confusion
with the wiring for the electrical installation (230 V!).
Surge arrester / distances to sources of interference
The M-Bus devices (meters) are not protected against voltages higher than the maximum permissible
bus voltage (±50 V). M-Bus networks must be protected against impermissibly high overvoltage.
Lightning protection equipment and surge arresters must be provided if necessary. Install M-Bus
cables as far away as possible from the electrical power supply cables for other devices (not M-Bus
devices).
Installation/commissioning of M-Bus devices
Caution
M-Bus devices must be installed and put into operation in accordance with the applicable standards and
regulations, and this task is only allowed to be performed by trained specialists (e.g. electricians, gas
fitters/plumbers).
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