Nortel Networks DCT1900 manual Safety, General

Technical Product Manual - DCT1900

Safety and Regulatory Information, Safety

CHAPTER 1

Safety

1.1General

zNever install telephone wiring during a lightning storm.

zNever install telephone jacks in wet locations unless the jack is specifically designed for wet locations.

zNever touch uninsulated telephone wires or terminals unless the telephone line has been disconnected at the network interface.

zNote: Avoid touching or punching down the Base Station signal and power pairs as there is -48Vdc present on these wires at all times.

zUse caution when installing or modifying telephone lines.

zAvoid using a telephone (other than a cordless type) during an electrical storm. Electric shock from lightning may occur.

zDo not use the telephone to report a gas leak in the vicinity of the leak.

zInstallation should conform to relevant national installation rules.

zThe Modular Cabinet should be mounted in a restricted area.

zDo not mount the modular cabinet to a drywall using insertable plastic drywall plugs. These will not safely support the cabinet. See Installation section for recommended mounting.

zSuitable for mounting on concrete or other non-combustible surface only. [This refers to the floor covering/material beneath the cabinet(s)].

zDisconnect all power sources before servicing equipment.

zFor the Modular Cabinet use Class II power sources (double insulated, conforms to UL1950, Uout ≤ 58 Vdc) only. The power source branch circuit over current protection must be rated 15A. The power source must be short circuit protected (15A maximum).

zA readily accessible disconnect device, that is suitably approved and rated, shall be incorporated in the field wiring.

zConnect to a reliably grounded -48Vdc SELV source.

zUse minimum 14 AWG copper conductors.

zService is to be performed by qualified personnel only.

zTorque power supply terminal block screws to 7 in. - lbs

zThe safety status of the different interconnection points of the system are as follows:

-RS232A, RS232B ports: SELV circuits

-Power Failure and General Alarm contacts: SELV circuits

-Digital Trunk Unit (DTU) connections: TNV circuits

-Digital Link Unit (DLU) connections: TNV circuits

-Base Station connections: TNV circuits

-Sync ports Central Processing Unit (CPU): SELV circuits

Safety-DCT1900/R8/mw	1-1
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