Contents

1 Preparing for installation· 1-1

Safety recommendations· 1-1

General safety recommendations· 1-1

Electricity safety· 1-1

Handling safety· 1-1

ESD prevention· 1-2

Laser safety· 1-2

Examining the installation site· 1-2

Weight support 1-2

Temperature· 1-2

Humidity· 1-3

Cleanliness· 1-3

EMI 1-4

Grounding· 1-4

Power 1-4

Cooling· 1-4

Space· 1-5

Installation accessories· 1-5

 

1 Preparing for installation

H3C S12500X-AF Switch Series includes the following models:

·     S12501X-AF

·     S12502X-AF

·     S12504X-AF

·     S12508X-AF

·     S12512X-AF

·     S12516X-AF

Safety recommendations

To avoid possible bodily injury and equipment damage, read Compliance and Safety Manual provided with the switch and all safety recommendations in this chapter carefully before installation. The recommendations do not cover every possible hazardous condition.

General safety recommendations

·     Keep the switch clean and dust-free.

·     Do not place the switch on a moist area, and avoid liquid flowing into the switch.

·     Make sure the ground is dry and flat and anti-slip measures are in place.

·     Keep the switch and installation tools away from walk areas.

·     Do not wear loose clothing, jewelry (for example, necklace) or any other things that could get caught in the switch when you install and maintain the switch.

Electricity safety

·     Clear the work area of possible electricity hazards, such as ungrounded power extension cables, missing safety grounds, and wet floors.

·     Locate the emergency power-off switch in the room before installation so you can quickly shut power off when an electrical accident occurs.

·     Remove all external cables, including power cords, before moving the chassis.

·     Do not work alone when the switch has power.

·     Before performing a task that is hazardous when power is present, make sure the switch is completely powered off.

Handling safety

	CAUTION: Do not hold the handle of a fan tray, a power module, or a card, or the air vents of the chassis to move the switch. Any attempt to move the switch with these parts might cause equipment damage and even bodily injury.

 

Remove power modules, cards, and all external cables, including the power cords, before moving the chassis. As a best practice, use a mechanical lift, such as forklift truck, to move the chassis.

If no mechanical lift is used, follow these guidelines to move the chassis:

·     Cooperate with a minimum of four people to move the chassis.

·     Lift the chassis by using the chassis handles or by supporting the bottom from the two sides.

·     Lift and put down the chassis slowly and never move suddenly.

ESD prevention

To prevent the electric component from being damaged by electrostatic discharge (ESD), follow these guidelines:

·     Ground the switch reliably. For how to ground your switch, see "Installing the switch."

·     Always wear an ESD wrist strap and make sure it is reliably grounded when installing FRUs. For how to use an ESD wrist strap, see "Installing FRUs."

·     Hold a PCB by its edges. Do not touch any electronic components or printed circuit.

·     Put cards away in antistatic bags for future use.

Laser safety

	WARNING! Do not stare into any fiber port or view directly with non-attenuating optical instruments when the switch has power. The laser light emitted from the fiber port might hurt your eyes.

 

The switch is a Class 1 laser product.

Examining the installation site

The switch must be used indoors. To ensure correct operation and long lifespan of your switch, the installation site must meet the requirements in this section.

Weight support

Make sure the floor can support the total weight of the rack, chassis, cards, power modules, and all other components. To mount the switch in a rack, make sure the slide rails can support the total weight of the switch and its accessories (cards, power modules, and transceiver modules).

Additionally, the floor and slide rail loading plan must also consider system expansion, such as adding more cards. For more information, see H3C S12500X-AF Switch Series Hardware Reference.

Temperature

	CAUTION: If condensation appears on the chassis when you move it to a high-temperature environment, dry the chassis before powering it on to avoid short circuits.

 

To ensure correct operation of the switch, make sure the room temperature meets the requirements in Table1-1.

Table1-1 Temperature requirements

Temperature	Range
Operating temperature	0°C to 40°C (32°F to 104°F)
Storage temperature	–40°C to +70°C (–40°F to +158°F)

 

Humidity

Maintain appropriate humidity in your equipment room, as described in Table1-2.

·     Lasting high relative humidity can cause poor insulation, electricity leakage, mechanical property change of materials, and metal corrosion.

·     Lasting low relative humidity can cause washer contraction and ESD and cause problems including loose mounting screws and circuit failure.

Table1-2 Humidity requirements

Humidity	Range
Operating humidity	5% to 95%, noncondensing
Storage humidity	5% to 95%, noncondensing

 

Cleanliness

Dust buildup on the chassis might result in electrostatic adsorption, which causes poor contact of metal components and contact points. In the worst case, electrostatic adsorption can cause communication failure.

Table1-3 Dust concentration limit in the equipment room

Substance	Concentration limit (particles/m3)
Dust particles	≤ 3 x 104 (No visible dust on desk in three days)
NOTE: Dust particle diameter ≥ 5 µm

 

The equipment room must also meet limits on salts, acids, and sulfides to eliminate corrosion and premature aging of components, as shown in Table1-4.

Table1-4 Harmful gas limits in the equipment room

Gas	Max. (mg/m3)
SO2	0.2
H2S	0.006
NH3	0.05
Cl2	0.01

 

EMI

All electromagnetic interference (EMI) sources, from outside or inside of the switch and application system, adversely affect the switch in the following ways:

·     A conduction pattern of capacitance coupling.

·     Inductance coupling.

·     Electromagnetic wave radiation.

·     Common impedance (including the grounding system) coupling.

To prevent EMI, perform the following tasks:

·     If AC power is used, use a single-phase three-wire power receptacle with protection earth (PE) to filter interference from the power grid.

·     Keep the switch far away from radio transmitting stations, radar stations, and high-frequency devices.

·     Use electromagnetic shielding, for example, shielded interface cables, when necessary.

Grounding

Using a good grounding system to protect your switch against lightning shocks, interferences, and ESD is essential to the operating reliability of your switch.

Make sure the equipment room grounding system has a resistance value less than 1 ohm.

For more information about grounding the switch, see "Installing the switch."

Power

Perform the following tasks to meet the power requirements:

1.     Calculate the system power consumption.

The system power consumption varies by card type and density. For more information about system power consumption calculation, see H3C S12500X-AF Switch Series Hardware Reference.

2.     Identify the number of power modules.

The total maximum output power of all power modules must be higher than the system power consumption. For more information about available power modules, see H3C S12500X-AF Switch Series Hardware Reference.

3.     Verify that the power system at the installation site meets the requirements of the power modules, including the input method and rated input voltage. For more information about power module specifications, see H3C S12500X-AF Switch Series Hardware Reference.

Cooling

Plan the installation site for adequate ventilation:

·     Leave a minimum of 30 cm (11.81 in) of clearance at the inlet and outlet air vents.

·     The rack for the switch has a good cooling system.

·     The installation site has a good cooling system.

·     Verify that the airflow design of the chassis meets the airflow design of the installation site.

Figure1-1 Airflow through the switch (S12516X-AF switch)

(1) Chassis air intake direction	(2) Chassis air exhaust direction

 

Space

For easy installation and maintenance, follow these space requirements:

·     Reserve a minimum of 1.2 m (3.94 ft) of clearance between the rack and walls or other devices.

·     Make sure the rack has enough space to accommodate the switch.

For more information about chassis dimensions, see  "Device dimensions and rack requirements."

Installation accessories

Make sure you have all the required installation accessories ready for the installation.

Table1-5 Installation accessories

Product code	Description	Quantity	Applicable device models
2150A08S	S12516X-AF mounting brackets	1 pair	S12516X-AF
2150A0CL	S12512X-AF mounting brackets	1 pair	S12512X-AF
2150A0AX	S12508X-AF mounting brackets	1 pair	S12508X-AF
2150A0BW	S12504X-AF mounting brackets	1 pair	S12504X-AF
2150A0D6	S12502X-AF mounting brackets	1 pair	S12502X-AF
2150A0EH	S12501X-AF mounting brackets	1 pair	S12501X-AF
2150A05N	S12501X-AF rack mount rail kit	1 pair of slide rails and 1 pair of chassis rails	S12501X-AF
2113A0YW	S12500X-AF MPU filler panel	2	S12516X-AF S12512X-AF S12508X-AF
2113A1EH	S12504X-AF MPU filler panel	2	S12504X-AF
2113A1P2	S12502X-AF MPU filler panel	2	S12502X-AF
2113A0YV	S12500X-AF LPU filler panel	·     S12516X-AF: 16 ·     S12512X-AF: 12 ·     S12508X-AF: 8 ·     S12504X-AF: 4	All S12500X-AF switch models
2124A01H	S12502X-AF LPU filler panel	1	S12502X-AF
2114A0AV	S12501X-AF LPU filler panel	1	S12501X-AF
2114A0A4	S12502X-AF power module filler panel	4	S12502X-AF
2114A09Q	S12500X-AF power module filler panel	·     S12516X-AF: 16 ·     S12512X-AF: 12 ·     S12508X-AF: 8 ·     S12504X-AF: 4 ·     S12501X-AF: 1	S12516X-AF S12512X-AF S12508X-AF S12504X-AF S12501X-AF
2114A0A3	S12502X-AF fan tray filler panel	1	S12502X-AF
2150A0AB	S12500X-AF cable management bracket	·     S12516X-AF: 32 ·     S12512X-AF: 24 ·     S12508X-AF: 16 ·     S12504X-AF: 8 ·     S12502X-AF: 4	S12516X-AF S12512X-AF S12508X-AF S12504X-AF S12502X-AF
26020141 26020075	M6 screw and cage nut	·     S12516X-AF: 30 pairs ·     S12512X-AF: 14 pairs ·     S12508X-AF: 14 pairs ·     S12504X-AF: 12 pairs ·     S12502X-AF: 4 pairs ·     S12501X-AF: 10 pairs	All S12500X-AF switch models
2110A042	Releasable cable tie	1	All S12500X-AF switch models
2110A05W	Hook-and-loop cable tie	1	All S12500X-AF switch models
0404A0EE	Grounding cable	1	All S12500X-AF switch models
28050001	ESD wrist strap	1	All S12500X-AF switch models
04042967	Console cable	1	All S12500X-AF switch models
14990101	SFP port dust plug	Same number as the SFP/SFP+ ports	S12500X-AF LPUs with SFP/SFP+ ports
1499A00C	QSFP port dust plug	Same number as the QSFP ports	S12500X-AF LPUs with QSFP ports
1499A00S	CFP2 port dust plug	Same number as the CFP2 ports	S12500X-AF LPUs with CFP2 ports