Nortel Networks CVX 600 manual General Warnings, DC Power Supply Warnings

Regulatory and Safety

Safety Warnings

Safety Warnings

General Warnings

The following safety warnings apply:

•Mechanical hazards and electrical shock hazards are possible if you remove one or more of the modules. There are no operator-serviceable modules. Only qualified personnel should service this equipment.

•This equipment must be connected to a protective ground according to the instructions in this manual. Improper grounding may result in electrical shock.

•This equipment does not provide safety isolation between any port that is connected to a digital network termination point or any port to which terminal equipment is connected.

•The wall circuit breaker provides the main protection for this equipment. For -48 VDC operation, the equipment must reside on its own circuit with a breaker rated for 20 A.

•Ensure that rack installation does not result in airflow blockage to power supply vents or chassis vents.

•Before installing the CVX 600 switch, ensure that the rack is sturdy and well-secured.

DC Power Supply Warnings

The DC power supply must be installed in a restricted area, such as an equipment closet or room, in compliance with Articles 110-16, 110-17, and 110-18 of the National Electric Code, ANSI/NFPA 70. The DC power source must be isolated from the AC power source and must have a proper ground.

The grounded conductor of the DC supply circuit can be connected to the frame grounding conductor of the CVX 600 switch. In this case, the following conditions apply:

•The CVX 600 switch must be connected to the DC power supply grounded conductor or bonding jumper from the grounding terminal bar or bus to which the DC power supply grounded conductor is connected.

•The CVX 600 switch must be located in the same area as other equipment having a connection between the grounded conductor of the same DC supply circuit and the grounding conductor, and also the point of grounding of the DC system. The DC system must not be grounded elsewhere.

•You must not switch or disconnect devices in the grounded conductor between the DC power supply and the point of connection of the grounding electrode conductor.

•A readily accessible disconnect device may be provided in the fixed wiring for a DC power supply. The device must be rated for the voltage and current specified.

•Before installing equipment in a rack, consider the overall loading of the branch circuit.

For safety purposes, the DC power supply requires connection to a grounded outlet. To prevent possible injury from voltages on the telecommunications network, disconnect all telecommunications network lines before disconnecting the DC power supply from the grounded outlet.

296-1011-202 Rel. 5.0, Doc. Rev. 02.01 vii