H3c-technologies H3C WX5500E Series Access Controllers Manuel d'utilisateur télécharger pdf (Page 11)

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

Lightning protection

To better protect the device from lightning, follow these guidelines:

• Make sure the grounding cable of the chassis is well grounded.

• Make sure the grounding terminal of the AC power receptacle is well grounded.

• Install a lightning protector at the input end of the power supply to enhance the lightning protection

capability of the power supply.

Accessories

Accessories are provided with the device.

Grounding cable M4 screw

Front mounting

bracket

Rear mounting

bracket

Rubber feet

Console cable

Cage nut (user

supplied)

M6 screw (user

supplied)

Cable tie (user

supplied)

ESD-preventive

wrist strap (user

supplied)

Installation preparation checklist

Table 4 Installation preparation checklist

Item Re

uirements

Result

Installation

site

Ventilation

• There is a minimum clearance of 10 cm (3.9 in) around

the inlet and exhaust vents for heat dissipation of the

device chassis.

• A ventilation system is available at the installation site.

Temperature 0°C to 45°C (32°F to 113°F)

Relative humidity 5% to 95% (noncondensing)

Cleanness

• Dust concentration ≤ 3 × 10

particles/m

• No dust on desk within three days

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 58 59

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H3c-technologies H3C WX5500E Series Access Controllers Manuel d'utilisateur Page 11

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