CHAPT ER
6-1
Installation and Upgrade Guide for Cisco Unified Videoconferencing 3522 BRI Gateway and 3527 PRI Gateway Release 5.6
OL-17010-01
6
Safety • Electrical Safety, page 6-1
• ESD Procedures, page 6-2
Electrical Safety
To avoid an electric shock or damage to the Cisco Unified Videoconferencing 3500 Gateway unit,
servicing should be performed by qualified service personnel only.
To reduce the risk of damaging power surges, Cisco recommends installing an AC surge arrestor in the
AC outlet from which the Cisco Unified Videoconferencing 3500 Gateway unit is powered.
Warning
Do not attempt to open the Cisco Unified Videoconferencing 3500 Gateway unit.
Warning
Changes or modifications to the device that are not approved by the party responsible for compliance
could void the user’s authority to operate the equipment.
Grounding
The power cable of the Cisco Unified Videoconferencing 3500 Gateway unit should only be connected
to a power outlet that has a protective earth contact. Do not use an extension cord that does not have a
protective conductor (ground). The Cisco Unified Videoconferencing 3500 Gateway unit can become
dangerous if you interrupt any of the protective conductors (grounding) or disconnect any of the
protective earth terminals.
Caution For North American installations, select a 3-conductor (18 AWG) power supply cord that is UL listed
and CSA certified. The cord must be terminated in a molded-on plug cap rated 125V/5A, with a
minimum length of 1.5m (6 feet) and no longer than 4.5m (approximately 14 feet).
Caution This is a class I unit. In Denmark, use this unit with an AC cord suited to Danish specifications. The cord
should include an earthing conductor. Plug the unit into a wall socket outlet which is connected to the
protective earth contact. Do not use socket outlets which are not connected to a protective earth contact!