Installation / De-Installation; Prerequisites - Landis+Gyr ZMQ202 User Manual

4

Installation / De-installation

4.1

Prerequisites

Danger
Danger
Warning
Note
H 71 0200 0215 f en - ZMQ202 / ZFQ202 - User Manual
Installation / De-installation
Galvanic isolation
The measuring circuits and auxiliary circuits (additional power supply, tariff
control input, synchronisation input, transmitting contacts, communication
interfaces) must be galvanically isolated.
Voltage paths must be fused
When installing the meter, all voltage paths (measurement voltage and all
auxiliary circuits such as the auxiliary power supply and the tariff control
voltage) must be fused by max. 6 A delay fuses.
Separation of voltage connections and communication lines
The voltage connections must be physically separated from the
communication lines in accordance with local laws and / or regulations.
Recommendation
We recommend that twisted and shielded cables are used for the
communication lines.
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