Grounding The System; Not For U.s.: Grounding The System - Siemens HiPath 3000 Service Manual

inst_h3.fm
Installing HiPath 3000
Installing HiPath 3750, HiPath 3700
4.3.3.5

Grounding the System

4.3.3.5.1

Not for U.S.: Grounding the System

Grounding: Grounding options
Danger
7
The HiPath 3750 system and the MDFU or MDFU-E must be grounded as shown in
Figure 4-59 by a separate ground conductor (minimum cross-section = 2.5 mm
Make sure that the ground conductor is securely installed and strain-relieved.
Failure to follow these instructions can result in electrical shock.
If one or two ECs are required in addition to the BC, the four metal connecting plates must be
installed to properly ground these cabinets.
The illustrations starting with Figure 4-60 show different grounding options.
Danger
7
If your personnel are not qualified to work on the low-voltage network (230 Vac), you
must hire a licensed electrician to ground the system separately using option 1b
(Figure 4-61).
Note on possible ground loops
To avoid ground loops from remotely operated devices (V.24 system peripherals),
>
the devices should be connected to the same low-voltage network (sub-distribution
board) if possible.
If the building floor plan does not permit this, you may need a line driver to isolate
the external devices in the event of a malfunction.
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P31003-H3550-S403-4-7620, 02/05
HiPath 3000 V5.0, HiPath 5000 V5.0, Service Manual
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