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Power Considerations

The Rack Mount Cabinets require an input power source of 115±10VAC or 208±20VAC or 
240±20VAC, 50/60 Hz, single phase, for up to five cabinets; 208VAC or 240VAC is required for 
six or seven cabinets. The system requires one or two AC outlets that must be dedicated to system 
use, fused, and grounded.

A reserve power source (two or four customer-supplied 12VDC batteries) can be connected to 
serve as a backup in case of power failure.

•

Operating Temperature: 0~104 degree Fahrenheit (0~40 degree Centigrade)

•

Operating Humidity: 20~80% relative humidity without condensation

When selecting a location for the cabinets, the location must be:

•

Dry and clean

•

Well-ventilated

•

Well-illuminated

•

Easily accessible

The location must not be:

•

Subject to extreme heat or cold

•

Subject to corrosive fumes, dust, or other airborne contaminants

•

Subject to excessive vibration

•

Next to television, radio, office automation, or high frequency equipment

Each Rack Mount Base and Expansion Cabinet houses a power supply that furnishes power to all 
of the stations and some of the peripherals that interface with the cabinet (see 

).

Two or four customer-supplied 12VDC reserve batteries can be connected to the system to 
maintain normal operation during a power failure (see 

 and 

). The batteries are kept in a highly-charged state by the standard power supply and must 

be connected when the system is operating normally. Fully charged batteries must be connected 
when normal AC power is available, batteries cannot be connected after/during an actual power 
failure.

Underwriters’ Laboratory (UL) and local electrical codes require certain standards for connecting 
commercial AC and reserve power to the rack mount system.

 describes which 

assemblies may be required to meet UL and local electrical code standards. See 

 for instructions on installing reserve power.