Checking The Grounding - Siemens HiPath 5000 Service Manual

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
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.
●
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.
P31003-H3560-S403-54-7620, 09/05
HiPath 3000 V6.0, HiPath 5000 V6.0, Provisional Service Manual
Activity
Installing HiPath 3000
Installing HiPath 3750, HiPath 3700
< 10 ohms
< 1 ohm
inst_h3.fm
Target
4-113