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4.2.3.6
Grounding the System and the Main Distribution Frame
Implementation guidelines in accordance with IEC 60364 and IEC 60950-1 must be adhered
to during installation.
DANGER
7
Risk of electric shock through contact with live wires
If your personnel are not qualified to work on the low-voltage network (230Vac)
you must hire a licensed electrician. The Section 1.6.1, "Connection to the Power
Circuit" is to be adhered to.
Grounding of the System
NOTE
Because of their safety class, the HiPath 3550 and HiPath 3350 do not require additional
grounding.
If additional grounding is necessary due to specific national requirements (for example in Fin-
land, Norway, U.S.), the wall housing HiPath 3550 and HiPath 3350 must be grounded by a
separate ground conductor via the ground connection marked "
USA and Canada: Design of the separate ground conductor
The connector cables of systems HiPath 3550 and HiPath 3350 have a ground conductor. The
system must also be grounded by a separate ground conductor. This grounding connection
must meet the requirements of the relevant authorities (U.S. National Electrical Code, Canadi-
an Electrical Code). Lay a separate grounding from the earth to the system's grounding con-
nector. The cross-section of the grounding must measure at least 14 AWG.
Grounding for the external main distribution frame
The system ground and that of the external MDF must be set from the building's potential
equalization bus in a star configuration.
Not for U.S.:
●
–
HiPath 3550: Shipments always include an MDFU (Germany only) and two grounding
cables. Use one of the cables to ground the MDFU. It is not necessary to ground the
connection between the MDFU and HiPath 3550 (see Figure 4-52).
–
HiPath 3350: This system type does not require an external main distribution frame.
The connection cables to the peripherals are attached directly to the boards and rout-
ed to the outside via a cable duct inside the housing.
A31003-H3590-S100-7-7620, 06/2012
HiPath 3000/5000 V9, Service documentation
Installing HiPath 3550, HiPath 3350, HiPath 3500, and HiPath 3300
inst_h3.fm
Installing HiPath 3000
".
4-95
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