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7.1 Installation notes
k
The rules of VDE 0100 "Regulations for the installation of high-current
equipment with rated voltages below 1000V" or the equivalent national
standards must be observed for the selection of cables, installation and
electrical connection of the instrument.
k
Internal work on the instrument may only be carried out by properly qual-
ified personnel, and then only to the extent described. The same applies
to electrical connections.
k
Ensure that the instrument is completely isolated from the mains power
before carrying out work where live components may be touched.
k
The electromagnetic compatibility (EMC) corresponds to that of the
standards and regulations cited in the technical data.
k
It is recommended that input, output and supply cables are routed sepa-
rately from one another, and not laid in parallel.
k
All input and output lines that are not connected to the supply network
must be laid out as shielded and twisted cables. The shielding must be
grounded to the earth potential on the instrument side.
k
Earth the instrument by connecting the PE terminal on the instrument to
the protective earth. This lead must have the same cross-section as the
supply cable. Earthing leads must be routed in star configuration to a
common earthing point which is connected to the protective earth of the
supply voltage. Earthing leads must not be daisy-chained, i.e. led from
one instrument to another.
k
No other apparatus is permitted to be connected to the mains supply
terminals of the instrument.
k
The instrument is not suitable for operation in areas with an explosion
hazard.
k
Inductive components in the neighbourhood of the instrument, such as
contactors or magnetic valves, must have RC combinations fitted for in-
terference suppression.
k
The instrument must be provided with external fusing and disconnection.
Depending on the supply voltage, the following fuse values apply for the
external fusing:
20 — 53V AC/DC, 48 — 63Hz
110 — 240V AC +10/-15%, 48 — 63Hz
7 Electrical connection
fuse 5A slow
fuse 5A slow
73
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