Technical Information DFS 700 / 04.2009 2-3
Notes on certain types of danger
Electrical power
(1) 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.
(2) 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.
(3) Only use fuses of the prescribed rating. In the event of faults in the power supply shut
the equipment down immediately.
(4) Work on the electrical equipment or fittings (e. g. Charger) must only be carried out by a
qualified electrician or by trained personnel under the management and supervision of a
qualified electrician in accordance with electrical engineering rules.
(5) Parts, on which tests, maintenance and repair are being carried out, must have the
power to them disconnected. The disconnected parts must be initially tested for zero
voltage then grounded and shorted. Adjacent parts with power still connected to them
must be isolated!
(6) The electrical equipment on the DFS 700 is to be checked regularly. Defects, such as
loose connections or burnt cables, must be removed immediately.
NOTE
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