Toshiba CTX28 manual Environmental Conditions, Location, Rack Mount Cabinets

Rack Mount Cabinets

Power Considerations

Input Power

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.

CAUTION! To avoid accidental power turn-off, do not use an On/Off wall switch for AC circuits dedicated for the use of the Rack Mount Cabinets.

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

Environmental Conditions

CAUTION! Equipment is for use in a Restricted Access Location.

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

•Operating Humidity: 20~80% relative humidity without condensation

Location

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

Power Considerations

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 Table 2-60, “Strata CTX670 Electrical Characteristics” on page 2-47).

Reserve Power

Two or four customer-supplied 12VDC reserve batteries can be connected to the system to maintain normal operation during a power failure (see Table 2-63 on page 2-49and Table 2-60 on page 2-47). 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. Table 5-3describes which assemblies may be required to meet UL and local electrical code standards. See “(Optional) Install Reserve Power” on page 5-14for instructions on installing reserve power.

Rack Mount Cabinets

Strata CTX I&M 06/04 5-3