14
11
Connecting Power Cables and Protection Earth Ground Cables
11.1
Connecting the Subrack Protection Earth Ground Cable
14
2
11.2
Connecting External Power Cables
1
Subrack protection
earth ground cable
Earth ground
point on the
vertical mounting
flange
Floating nut
Subrack protection earth ground cable
Cross
screwdriver
M6
Panel screw
Marker pen
Flat
screwdriver
Subrack protection
earth ground cable
Make sure the external power supply is shut off before connecting the power cables. Do not
connect the cabinet power cables when the power supply is connected.
Make sure the DC power input is cut off during cable connection, and attach labels to the
switches to be used.
Never expose the joining part of a power cable or a power connector unless necessary.
If the bonding resistance between the equipment ground cable and the earth ground bar is higher
than 0.1 ohm, the ground cable should be re-arranged.
With the premise that cables must be arranged in compliance with the route, the power cables
should be processed on site according to the “shortest” route principle.
The power cables should be made of a continuous segment of copper core with no intermediate
connections.
Caution
Warning