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Fig. 5 5-Module Chassis with two Installed AC Power Supplies
3.3 DC Powered Chassis Site Preparation
Power source should be available within 5 ft. of the chassis. The over current
protection for the connection with centralized DC shall be provided in the building
installation and shall be a UL listed breaker rated at 15 Amps, and installed per
the National Electrical Code, ANSI/NFPA-70.
The 8225-1 and 8225-2 require 36-60VDC/0.7 Amps power. The 8226-1 and 8226-2
require 18-36VDC/1.4 Amps power. Appropriate overloading protection should be
provided on all DC power source outlets utilized.
WARNING:
Only a DC power source that complies with
safety extra low voltage (SELV) requirements can be
connected to the DC-input power supply.
When rack-mounting this equipment, the rack should be appropriately earth-grounded.
WARNING REGARDING EARTHING GROUND:
o
o
o
o
This equipment shall be connected to the DC supply
system earthing electrode conductor or to a bonding
jumper from an earthing terminal bar or bus to which the
DC supply system earthing electrode is connected.
This equipment shall be located in the same immediate
area (such as adjacent cabinets) as any other equipment
that has a connection between the earthed conductor of
the same DC supply circuit and the earthing conductor,
and also the point of earthing of the DC system. The DC
system shall not be earthed elsewhere.
The DC supply source is to be located within the same
premises as this equipment.
There shall be no switching or disconnecting devices in
the earthed circuit conductor between the DC source and
the earthing electrode conductor.
The operating temperature of this equipment is 0 to 50 degrees C. If installed in
a closed or multi-unit rack assembly, the operating ambient temperature of the
rack must not exceed the maximum rated 50 degrees C temperature.
