3M DFS 700, Installation And User Manual

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Technical Information DFS 700 / 04.2009
7-7
7.3 Connecting and switching electrical power
This section describes the different options for providing the necessary power for operating the
DFS 700.
To connect the DFS 700 to the public power supply outdoors, a connection must be
available that satisfies the local electrical guidelines and safety requirements.
The power supply line phase [brown/black wire] must be secured with a suitable fuse,
typically 4 to 6 A. Otherwise the electronics in the DFS 700 may be damaged or
destroyed in case of over-current.
When the DFS 700 is in a fixed installation, e.g. to street lights, a disconnectable over-
current protective device (max. 6A) according to EN60950 must be installed between
the power supply line and the DFS 700. For service work on the DFS 700 the power
supply must be disconnected via the over-current protective device.
The over-current protective device is to be installed in accordance with the local
electrical guidelines and safety requirements. Therefore in Scandinavia, for example, a
cut out must have a 2-pole connection against grounding.
The electrical connections must always be produced in accordance with the
requirements for the intended location. In the case of fixed installations the plug on the
power supply unit or the Charger may have to be removed. If the plug is still to be used,
then an adequately waterproof, weather-resistant, and properly mounted socket with
protection to the power line as specified above is to be provided.
Pay particular attention to further safety advices specified in Section 2.
For compliance with CE Regulations for fixed installations, where the Charger is
connected to the public mains network, a frequency filter has to be used in the supply
line. Following types can be used:
1. Schurter 5500.2034 FMLB-0109-2040
2. Schurter 5500.2043 FMW2-52-2/1.25
NOTE