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E9000 Server V100R001 User Guide 24

This document describes the overview, functions, structure, installation, and configuration methods of the E9000.
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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
General Installation Requirements

General Installation Requirements

This section describes the requirements for routing and binding cables.

Cable Layout Guidelines

  • Attach engineering labels to cables before routing and connecting cables.
  • When routing cables on the cable organizer, reserve the distances listed in Table A-2 between cables. Do not bind different types of cables together. You are advised to bind the power cables and PGND cables inside the cabinet along the inner part of the cable organizer, and bind the signal cables along the outer part of the cable organizer.
Table A-2 Distances between different types of cables (unit: mm/in.)

Cable Classification

Category 1

Category 2

Category 3

Category 4

Category 1

0/0

150/5.91

100/3.94

200/7.87

Category 2

150/5.91

0/0

100/3.94

150/5.91

Category 3

100/3.94

100/3.94

0/0

150/5.91

Category 4

200/7.87

150/5.91

150/5.91

0/0

NOTE:

According to the requirements for electromagnetic emission and electromagnetic susceptibility (EMS), the communication cables are classified into the following categories:

  • Category 1 cables: electromagnetic emission cables, such as 220 V power cables, –48 V output cables of the primary power supply, and –48 V power cables of the cabinet
  • Category 2 cables: EMS cables, such as video cables, audio cables, monitoring signal cables, and user cables
  • Category 3 cables: cables with electromagnetic emission and EMS functions, such as HW cables, NOD cables, E1 cables, network cables, T1 cables, V.24 cables, V.35 cables, serial cables and loading cables
  • Category 4 cables: dedicated cables, such as antenna feeders and RF cables
  • Do not lay out cables on the heat dissipation holes of the devices. Otherwise, the device heat dissipation and cable life are affected.
  • Lay out cables in an orderly fashion. Do not cross or fold cables.
  • In underfloor cabling mode, the height of cable bundles must not exceed 3/4 of the net height of the space under the ESD floor.
  • When the distance between a cable organizer and the cabinet top is greater than 800 mm (31.50 in.), install a vertical cable ladder to fix the cables, as shown in Figure A-8.
Figure A-8 Cable routing

Cable Binding Guidelines

  • Bind cables outside the cabinet with an interval of 200 mm (7.87 in.) between two adjacent cable ties. Bind cables inside the cabinet with an interval of less than 200 mm (7.87 in.) between two adjacent cable ties.
  • Bind cables on a cable organizer in bundles. Bind the first bundle to the beam of the cable organizer, and the next bundle to the previous bundle. After the device is installed, the cross section of the cables fixed on the cable organizer should be rectangular, as shown in Figure A-9.
Figure A-9 Binding cables (1)
  • Lay out and bind cables by color.
  • The bending radius (R) must meet the requirements listed in Table A-3.
Table A-3 Bending requirements for signal cables

Cable Type

Bending Radius (R)

Ethernet signal cable

R ≥ 2d

Optical cable

R ≥ 40 mm (1.57 in.); bending angle > 90°

Figure A-10 Bending radius of signal cables

R

Bending radius of signal cables

d

Cable diameter

  • Bind cables properly, evenly, and neatly with cable ties facing the same direction.
  • Do not bind the cable ties where the cables bend, and reserve enough space at the bend, as shown in Figure A-11.
Figure A-11 Binding cables (2)
  • Bundled cables must not block indicators or interfere with parts replacement.
  • Trim off the excess ends of cable ties so that there are no rough edges.
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Updated: 2019-08-30

Document ID: EDOC1000015897

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