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Magnum 500-Series Switching Hubs Installation and User Guide (08/98)
GARRETT
28
APPENDIX B : 48VDC ADDENDUM
B1.0 SPECIFICATIONS - MAGNUM 508, 528 and 528F 48VDC OPTION
Power Supply (Internal -48 VDC)
DC Power Connector: 3 terminals: “
-
“, “GND”, “+”
Input Voltage: 36 - 72 VDC (auto-ranging)
Output Power: 40 watts, max.
Power Consumption : 20 watts max.
With the exception of the power supply, all specifications for the Magnum 500-
series with 48VDC power options are identical to those listed in Section 1.
B2.0 MAGNUM 508, 528 AND 528F (48VDC OPTION)
The internal 48VDC power supply models are designed for installations where
a battery plant is the power source. The operational range for the 48 VDC power supply
is 36 - 72 VDC. Each unit is normally convection-cooled for silent operation.
The functionality of the Magnum 500-series with 48VDC power options
is
identical to the standard 508, 528 and 528F models.
B3.0 APPLICATIONS
Magnum 508-48VDC and 528-48VDC Switching Hubs are easily installed in
a variety of applications where 48 VDC power is used as the primary power source. The
48VDC power configuration provides an Ethernet networking solution utilizing a special
power supply in hubs with a proven track record. The solution is particularly useful in
the telecommunication industry, where it is common for equipment to operate on -48
VDC power. Such companies include regular and wireless telephone service providers,
Internet service providers (ISPs) and other communications companies , as well as high-
availability equipment serving broadcasters, publishers, and some financial institutions.
In addition, many large newspaper operations, brokerage firms and other facilities often
use a battery backup system to maintain operations in the event of a power failure, and
even long term outages. The 508/528-48VDC is ideal for utility use in this type of
battery-powered plant. It is frequently used to provide an Ethernet LAN connection for
computer system back up, management computers and operations monitoring equipment.