H3C S7500 Series Installation guide

Installation Manual

H3C S7500 Series Ethernet Switches Table of Contents

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Table of Contents

Appendix B N68 Cabinet Installation...........................................................................................B-1

B.1 Installing N68 Cabinets .....................................................................................................B-1

B.1.1 Installation Overview...............................................................................................B-1

B.1.2 Requirements for Space Planning..........................................................................B-2

B.1.3 Installation Preparation ...........................................................................................B-3

B.1.4 Installation Procedure .............................................................................................B-5

B.2 Installing Cabinets on Cement Floor .................................................................................B-6

B.2.1 Installing Cabinets with Feet...................................................................................B-6

B.2.2 Installing Cabinets without Feet............................................................................B-22

B.3 Installing Cabinets on Antistatic Floor .............................................................................B-32

B.3.1 Introduction to Supports and Guide rails ..............................................................B-32

B.3.2 Installation Procedure ...........................................................................................B-36

B.3.3 Positioning Supports.............................................................................................B-38

B.3.4 Installing Supports ................................................................................................B-41

B.3.5 Installing Antistatic Floor Accessories ..................................................................B-46

B.3.6 Leveling the Cabinets ...........................................................................................B-46

B.3.7 Fixing Cabinets .....................................................................................................B-48

B.3.8 Testing Insulation..................................................................................................B-50

B.3.9 Restoring the Floor ...............................................................................................B-50

B.3.10 Verifying Installation............................................................................................B-52

B.4 Installing Cabinet Accessories ........................................................................................B-53

B.4.1 Installing Feet........................................................................................................B-53

B.4.2 Installing Doors .....................................................................................................B-56

B.4.3 Installing Protection Ground Cables .....................................................................B-60

B.5 Introduction to Cabinet Cable Management....................................................................B-61

B.5.1 Introduction to Cabinet Grounding Points.............................................................B-61

B.5.2 Introduction to Cabinet Power Distribution ...........................................................B-62

B.5.3 Introduction to Internal Cable Management .........................................................B-66

B.6 Remodeling Cabinets ......................................................................................................B-73

B.6.1 Remodeling an S7500 N68-18 Cabinet................................................................B-73

B.6.2 Remodeling an S7500 N68-22 Cabinet................................................................B-76

Installation Manual

H3C S7500 Series Ethernet Switches Appendix B N68 Cabinet Installation

B-1

Appendix B N68 Cabinet Installation

B.1 Installing N68 Cabinets

B.1.1 Installation Overview

 Note:

z Two types of N68 cabinets are available. One is 1.8 meters high, with a headroom of

37 U; and the other is 2.2 meters high, with a headroom of 46 U. The installation

requirements for both types of cabinets are the same, such as space planning,

positioning and fixing cabinets.

z The following sections describe how to install a 2.2-meter-high N68 (N68-22)

cabinet in details.

The dimensions of an N68-22 cabinet are 2200 × 600 × 800 mm (86.6 × 23.6 × 31.5 in.)

(H × W × D), as shown in

Figure B-1.

Figure B-1 Dimensions of the N68-22 cabinet

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H3C S7500 Series Ethernet Switches Appendix B N68 Cabinet Installation

B-2

B.1.2 Requirements for Space Planning

Before installing the cabinet, you need to plan installation space first. Sufficient space

must be provided in front of and at the back of the cabinet for maintenance.

Figure B-2

describes the planning of installation space for a single cabinet.

Figure B-3 describes

the planning of side-by-side cabinet installation.

(1) Inner wall or reference body (2) Cabinet back (3) Cabinet outline

Figure B-2 Planning of installation space for a single cabinet (in mm)

(1) Inner wall or reference body (2) Cabinet back (3) Cabinet outline

Figure B-3 Planning of side-by-side cabinet installation (in mm)

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H3C S7500 Series Ethernet Switches Appendix B N68 Cabinet Installation

B-3

B.1.3 Installation Preparation

Follow the given steps to do the installation preparation:

1) Draw lines correctly to avoid rework.

2) Unpack the cabinet and the cabinet accessories according to the operation guide.

Caution:

z If you need to install feet for the cabinet on cement floor, refer to Installing Cabinet

Accessories”. Then proceed with step 3.

z After installing feet, you must fix the cabinets to avoid accidents.

z You can use supports to install cabinets on antistatic floor. You do not need to install

feet.

 Note:

The way of fixing the cabinet with feet is not recommended.

3) Put the rack in the upright position, and then remove wood boards and support

wood bars from the back with a cross-head screwdriver. Put the removed boards

and bars in a safe place to avoid injury. Keep the removed screws for later use.

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H3C S7500 Series Ethernet Switches Appendix B N68 Cabinet Installation

B-4

(1) Support bar

Figure B-4 Remove support bars

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H3C S7500 Series Ethernet Switches Appendix B N68 Cabinet Installation

B-5

B.1.4 Installation Procedure

 Note:

The weight of an empty N68-22 cabinet is 160 kg (352.7 lb.) and that of an empty

N68-18 cabinet is 120 kg (264.6 lb.). Before installing the cabinets, you must check

load-bearing capacity of the floor as required.

Based on the floor types, the N68-22 cabinet can be installed on the cement floor or

anti-static floor.

Figure B-5 describes the installation flow of the N68-22 cabinet.

Start

Installation

environment

Cement

floor

Antistatic

floor

End

Start

Installation

environment

Cement

floor

Antistatic

floor

End

Figure B-5 Installation flow of the N68-22 cabinet

 Note:

z If the cabinet is installed on the cement floor, after fixing the cabinet, you can install

the cabinet accessories directly.

z If the cabinet is installed on the anti-static floor, after fixing the cabinet, you need to

install anti-static floor holders and recover the floor, and then install the cabinet

accessories.

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H3C S7500 Series Ethernet Switches Appendix B N68 Cabinet Installation

B-6

B.2 Installing Cabinets on Cement Floor

This section describes how to install N68-22 cabinets on cement floor.

The dimensions of an N68-22 cabinet are 2200 x 600 x 800 mm (86.6 x 23.6 x 31.5 in.)

(H × W × D). The internal headroom is 46 U. You can install cabinets with or without feet

based on your requirements.

Caution:

You must install insulation components correctly to avoid connectivity with the ground

before the ground cables are connected, thus satisfying insulation requirements.

B.2.1 Installing Cabinets with Feet

When installing cabinets with feet on cement floor, you need to use anchor plate

components to fix the cabinets. Considering that the floor is not flat, the height of the

feet is adjustable.

Caution:

Feet provide insulation and there are insulators in anchor plate components. These

insulation components should be installed correctly so that the equipment is insulated

from the ground before grounding cables are connected, thus meeting the insulation

requirements.

z Anchor plate components

Anchor plate components of an N68 cabinet consist of an anchor plate and an

expansion bolt.

Figure B-6 illustrates the anchor plate components.

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H3C S7500 Series Ethernet Switches Appendix B N68 Cabinet Installation

B-7

(1) Bolt M12×70 (2) Spring washer 12 (3) Big flat washer 12 (4) Insulation washer

(5) Anchor plate (6) Insulation pad of the anchor plate

(7) Expansion tube (8) Expansion bolt

(9) Foot connection notch (10) Connection hole

Figure B-6 Anchor plate components

z Foot components

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H3C S7500 Series Ethernet Switches Appendix B N68 Cabinet Installation

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(1) Fastening nut for cabinets (2) Fastening nut for anchor plate

(3) Leveling nut (4) Foot

Figure B-7 Foot components

z Installation procedure

Figure B-8 illustrates the procedure for installing N68-22 cabinets on cement floor.

Installation Manual

H3C S7500 Series Ethernet Switches Appendix B N68 Cabinet Installation

B-9

Insulation test

No

Yes

End

Level the cabinet

Combine cabinets

Fix the cabinet

Yes

No

Locate the cabinet

Start

Insulation test

End

Level the cabinet

Combine cabinets

Fix the cabinet

Insulation test

End

Level the cabinet

Combine cabinets

Fix the cabinet

Position the cabinet

Start

Does it pass insulation test?

End

Level the cabinet

Combine cabinets

Fix the cabinet

Does it satisfy requirements ?

Figure B-8 Install cabinets with feet on cement floor

I. Positioning the cabinets

1) Determine where to install the cabinets.

Before installing the cabinets, you need to plan installation space first. Sufficient space

must be provided in front of and at the back of the cabinet for maintenance.

2) Make marks.

You can make marks in two ways: determining installation hole positions based on

layout and determining installation hole positions based on the template.

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H3C S7500 Series Ethernet Switches Appendix B N68 Cabinet Installation

B-10

Table B-1 Determine installation hole positions based on the layout

Step Operation Remarks

1

Determine the installation positions of the

expansion bolts according to the

dimensions specified in the construction

plan and the installation hole dimensions.

Figure B-9 shows installation

positions of the expansion

bolts and feet for a single

cabinet.

Figure B-10 shows

installation positions of the

expansion bolts and feet

used to combine a row of

cabinets.

2

Mark several points for drawing with a steel

tape, and then draw two straight lines

parallel to the benchmarks, with a spacing

of 687 mm (27.0 in.).

—

3

Determine the hole positions of the

expansion bolts for the first cabinet and foot

positions on the two lines as designed.

—

4

With these holes as reference, mark the

installation hole positions of the expansion

bolts for other cabinets and foot positions.

—

5 Measure and confirm hole sizes again.

—

(1) Hole for fixing an expansion bolt (2) Mark for positioning feet

(3) Cabinet outline (4) Inner wall or reference body

Figure B-9 Installation positions of the expansion bolts and feet for a single cabinet

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H3C S7500 Series Ethernet Switches Appendix B N68 Cabinet Installation

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(1) Hole for fixing an expansion bolt (2) Mark for positioning feet

(3) Cabinet outline (4) Inner wall or reference body

Figure B-10 Installation positions of the expansion bolts and feet used to combine a

row of cabinets

Table B-2 Determine installation hole positions based on the template

Step Operation Remarks

1

Put the marking template on the floor as

required.

Figure B-11 shows the

marking template.

2

Mark the positions of all the expansion bolts

and the feet on the floor according to the

template. The semi-circle notch of the

template indicates the front of the cabinet.

Each cabinet needs four

expansion bolt holes.

Caution:

Make sure that the template direction is correct.

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H3C S7500 Series Ethernet Switches Appendix B N68 Cabinet Installation

B-12

Figure B-11 Marking template (only for installation on cement floor)

3) Drill holes.

Use M12 expansion bolts to fix supports on the ground. Use a percussion drill with Ф16

bit to drill holes.

When drilling holes, hold the drill handle firmly with both hands, keeping the bit

perpendicular to the floor to prevent damages to the floor or tilted holes.

The depth of the holes should range from 52 mm to 60 mm (2.0 in. to 2.4 in.). All the

holes should have the same depth. After drilling a hole, use a dust collector to clean the

dust inside and outside the holes before measuring the hole depth.

The bit is difficult to position on the floor that is hard and smooth. In this case, punch a

small hole on the marks for the installation holes before drilling.

Note that the precision of marking and drilling is essential to hardware installation. Low

precision can cause many problems during installation.

Caution:

The depth of drilling is between 52 mm and 60 mm (2.0 in. to 2.4 in.). Otherwise, you

will be unable to install or fasten the expansion bolts.

4) Install expansion bolts.

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H3C S7500 Series Ethernet Switches Appendix B N68 Cabinet Installation

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Prior to installation, clean dust inside and outside the holes with a dust collector and

then measure the spacing of holes. If errors are not acceptable, you must position and

drill the holes again.

Take down the expansion tube and expansion nut, and insert the alignment rib on the

expansion nut into the alignment groove of expansion tube. Punch the expansion tube

with rubber hammer until the expansion tube is completely buried in the floor.

Figure B-12 illustrates how to install an expansion nut onto an expansion tube.

1

2

3

4

(1) Expansion tube (2) Alignment groove

(3) Expansion nut (4) Alignment rib

Figure B-12 Install an expansion nut onto an expansion tube

Caution:

You must insert the alignment rib of expansion nuts into the alignment grooves of

expansion tubes first; otherwise you will be unable to install or fasten the expansion

bolts.

II. Leveling the cabinets

1) Put the cabinets in position.

Install the cabinets in the planned position and align four feet of the cabinet with four

foot marks on the floor, and then align all the cabinets.

2) Level the cabinets.

Loosen the nuts used for fastening cabinets, and then place a horizontal ruler in the two

orthogonal directions on the top of the cabinets to check levelness. If any cabinet is out

of levelness, adjust the levelness by turning screws on feet with a wrench, and align all

the cabinets, as shown in

Figure B-13.

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H3C S7500 Series Ethernet Switches Appendix B N68 Cabinet Installation

B-14

(1) Leveling nut

Figure B-13 Level a cabinet

3) Fasten cabinet feet.

Fasten all the nuts used for fastening cabinets on all the feet so that the nuts for

fastening cabinets can be against the nuts on the holder, as shown in

Figure B-14.

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H3C S7500 Series Ethernet Switches Appendix B N68 Cabinet Installation

B-15

(1) Welded nut on the foot holder (2) Nut for fastening the cabinet

Figure B-14 Fasten feet

III. Fixing the cabinets

Caution:

When combining two or more cabinets, you have to combine the cabinets first, and then

fix anchor strips.

1) Install anchor plates.

Loosen the nuts used for fastening the cabinet and turn them upward by more than 10

mm (0.4 in.), and then install anchor plates according to the direction indicated by the

arrow, as shown in

Figure B-15. The anchor plates must press the cabinet feet. One

cabinet needs four anchor plates.

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H3C S7500 Series Ethernet Switches Appendix B N68 Cabinet Installation

B-16

Caution:

Anchor plates must be installed according to the direction indicated by the arrow in the

following figure.

Figure B-15 Install anchor plates (on cement floor)

2) Install insulation components and fix anchor plates.

Put the insulation pad under the anchor plate, and then align the plate with the hole of

the expansion bolt (one anchor plate needs one insulation pad). Then install the

M12×70 bolt in the expansion bolt hole through the anchor plate. Install insulation

washer and big flat washers as shown in area A in

Figure B-16. Torque the M12x70

bolts to 45 Nm.

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H3C S7500 Series Ethernet Switches Appendix B N68 Cabinet Installation

B-17

(1) Bolt M12×70 (2) Spring washer 12 (3) Big flat washer 12 (4) Insulation washer

(5) Insulation pad of the anchor plate (6) Expansion tube (7) Expansion bolt

(8) Nut for fastening the anchor plate (9) Anchor plate

Figure B-16 Fix the anchor plate

3) Fix the nuts for fastening anchor plates.

Fix the nuts for fastening anchor plates, as shown in area B in

Figure B-16.

4) Fix cabinet tops when combining cabinets.

If you need to combine two or more cabinets together, related connections need to be

performed. Combine the cabinets with connecting plates on the top of the cabinets.

 Note:

If the side panels have been installed, remove the side panels as required before

combining the cabinets.

The connecting plates are installed on the top of the cabinets and delivered together

with the cabinets, as shown in

Figure B-17.

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H3C S7500 Series Ethernet Switches Appendix B N68 Cabinet Installation

B-18

(1) Connecting plate for combining cabinets

Figure B-17 Position of the connecting plate

Remove the connecting plates from the adjacent cabinets, and then reinstall the

connecting plates, as shown in

Figure B-18.

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H3C S7500 Series Ethernet Switches Appendix B N68 Cabinet Installation

B-19

(1) Nut M8 (2) Flat washer 8

(3) Combined screw M6x12 (4) Spring washer 8

(5) Bolt M8x30 (6) Connecting plate for combining cabinets

Figure B-18 Install the connecting plate for combining cabinets

Caution:

M8x30 bolts used to combine cabinets are delivered together with support accessories.

IV. Testing insulation

Switch the multimeter to the megohm range and measure the resistance between the

fastening bolts M12x70 and the cabinets. If the resistance is larger than 5 megohm, you

can finish installation. If not, remove all installation anchor plate components, and then

check whether the insulation washers or pads are installed or are damaged. Reinstall

the anchor plate and measure insulation until the requirement is satisfied.

Figure B-19 illustrates a single cabinet installed on the cement floor and Figure B-20

illustrates a row of cabinets installed on the cement floor.

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H3C S7500 Series Installation guide

H3C S7500 Series Installation guide

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