inst_h3.fm
P31003-H3550-S403-4-7620, 02/05
HiPath 3000 V5.0, HiPath 5000 V5.0, Service Manual
4-111
Installing HiPath 3000
Installing HiPath 3750, HiPath 3700
4.3.3.6 Checking the Grounding
Procedure
Perform the tests in the table below to ensure that the system is properly grounded before star-
tup.
Step Activity Target
1. Check the ohmic resistance of the ground connection to
the system:
Perform measurement between the PE (protective
earth) on a socket in the internal installation (at the sys-
tem’s installation site) and HiPath 3750.
Prerequisites:
● HiPath 3750 is not yet connected to the low-voltage
network via the power cable.
● The system’s separate grounding is connected.
< 10 ohms
2. Check the ohmic resistance between the individual sys-
tem parts (basic cabinet, expansion cabinets, main dis-
tribution frame).
Prerequisite:
HiPath 3750 is not yet connected to the low-voltage net-
work via the power cable.
< 1 ohm
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