Introduction To Internal Cable Management - 3Com LS8M1P12TEH Installation Manual

Installation Manual
H3C S7500 Series Ethernet Switches
Note:
This diagram is for S7500 DC cabinets only.
The DC cabinet supports dual -48 VDC power inputs, each -48 V input supplies
power to devices through three unipolar NCBs (63 A).
High DC voltage is dangerous. When the cabinet is in operation, the cabinet door
should be locked by professional maintainers, and the maintainers should pay
attention not to touch any of the power supply terminals during maintenance.
Point 1, 2, 3 in the diagram each represents a device.
If you use dual -48 VDC power outputs, and the device in the cabinet support
dual-input power supply, you are recommended to connect the two inputs of the
device to two -48 V NCBs. If there are more than three devices in the cabinet, you
can parallel connect several devices to one NCB, with proper consideration of the
device power.
If you use a single -48 VDC power output, you can connect the output to the two
input terminals.
If your device power is small, the device is protected by its own power protection set
or the superior air breaker rather than the NCB. You can change the NCB, but H3C
does not provide NCBs of various capacities.
The power distribution component is in the rear of the cabinet, you can remove it to
the front of the cabinet as needed.
You can connect the PE of a device to the busbar at the side of the cabinet, or to the
PGND terminal at the power distribution component.
B.5.3 Introduction to Internal Cable Management
I. Introduction to cable management components
1U cabling frame, used for organizing collected cables at the rear of the cabinet to
facilitate the user to manage power cables, in most situations, and data cables.
When using a 1U cabling frame, put the cables of the accessories through the
cabling brackets, lead them to the rear side of the cabinet, and bundle the cables
at the proper positions with cable ties.
Appendix B N68 Cabinet Installation
B-66