GE Bently Nevada 3500/15 Series - Single-Point Grounding Connection

3500/15 AC and DC Power Supplies Operation and Maintenance Manual
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1. Chassis grounding strap (see Safety Notice)
Figure 4-4: Low Voltage DC Power Input Module
4.5 Connecting Single-Point Ground
To avoid ground loops, the system must provide a single point ground. The Power
Input Modules provide a switch that lets you control where your system is
grounded. If your rack uses 2 power supplies then you must set both switches to
the same position. A CLOSED switch grounds the system through the GND
terminal on the terminal strip connector. If you ground your system at another
location, such as when using internal/external barriers, you must ensure that the
switch on each Power Input Module is OPENED. Figure 4-5 shows you how to set
the switch to the desired position. For most racks the switch will be set to CLOSED
at the factory. If Internal Barriers are installed at the factory the switch will be set
to the OPENED position.
DANGER
High voltages can persist on the power supplies and
Power Input Modules for several minutes after you
remove the modules from the rack. High voltages can
result in shock, burns, or death. Always wait several
minutes after disconnecting power before attempting
to handle the power supplies or Power Input Modules.
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