APC InfraStruxure Specifications download pdf (Page 11)

Safety: Warnings

InfraStruXure System—Installation and Start-Up 3

Total Power Off

1. Set the PDU Main Input to OFF.

2. Set the upstream power source feeding the PDU to OFF.

Emergency Power Off (EPO)

Hazardous voltage from the branch circuit must be isolated from the 24VAC, 24VDC, and contact

closure. 24VAC and 24VDC are considered Class 2 circuits as defined in Article 725 of the National

Electrical Code (NFPA 70) and Section 16 of the Canadian Electrical Code (C22.1).

A Class 2 circuit is a source having limited voltage and energy capacity as follows:

a. If an Inherently Limited Power Source, voltage and energy are limited to less than 30VAC,

less than 30VDC, and 8A.

b. If not an Inherently Limited Power Source, voltage and energy are limited to less than

30VAC, less than 60VDC, 250VA, and the current is limited to 1000/Vmax. The fuse is

limited to 5A if less than 20VAC or 20VDC, or 100/Vmaximum if less than 30VAC or

60VDC.

If you choose to use a 24VAC, 24VDC, or contact closure connection to the EPO, use one of the

following UL-listed wire types:

• CL2 Class 2 cable for general purpose use

• CL2P Plenum cable for use in ducts, plenums, and other space used for environmental air

• CL2R Riser cable for use in a vertical run shaft from floor to floor

• CL2X Limited Use cable for use in dwellings and for use in a raceway

• For installation in Canada, the cable should be CSA Certified, type ELC (extra-low-voltage

control cable).

If you do not use a CL2 cable, route the EPO wiring in conduit that does not contain any branch

circuit wiring.

EMI

This equipment has been tested and found to comply with the limits for a Class A digital device,

pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection

against harmful interference when the equipment is operated in a commercial environment. This

equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in

accordance with this user manual, may cause harmful interference to radio communications.

Operation of this equipment in a residential area is likely to cause harmful interference.The user will

bear sole responsibility for correcting such interference.

This Class A digital apparatus complies with Canadian ICES-003.

Cet appareil numerique de la classe A est conformé à la norme NMB-003 du Canada.

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APC InfraStruxure Specifications Page 11