Grounding Cable And Lug Specifications For Ex8200 Switches - Juniper EX8208 Hardware Manual

Table 33: Power Specifications for a 2000 W DC Power Supply Used in an EX8208 Switch
Item
DC input voltage
DC input current rating
Output power
Internal Fuse Protection

Grounding Cable and Lug Specifications for EX8200 Switches

To ensure proper operation and to meet safety and electromagnetic interference (EMI) requirements, you
must connect an EX Series switch to earth ground before you connect power to the switch. You must use
the protective earthing terminal on the switch chassis to connect the switch to earth ground.
WARNING:
protective earthing terminal on the chassis that must be permanently connected to
earth ground to adequately ground the chassis and protect the operator from electrical
hazards.
CAUTION:
attached an appropriate grounding lug to the grounding cable that you supply. Using
a grounding cable with an incorrectly attached lug can damage the switch.
Specifications
Minimum operating voltage: –40 VDC
Nominal operating voltage: –48 VDC
Operating voltage range: –40 VDC through –72 VDC
NOTE: If the input voltage from the DC power source drops below –37.5 VDC through
–39.5 VDC, the switching platform automatically shuts down. During automatic
shutdown, the circuit remains active. When the input voltage returns to –43 VDC
through –44 VDC, the switch automatically starts up again and the system returns to
normal operation within 30 minutes. No operator intervention is required.
50 A maximum at nominal operating voltage (–48 VDC) for each input terminal.
2000 W
100 A
The switch is installed in a restricted-access location. It has a separate
Before switch installation begins, ensure that a licensed electrician has
76