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Magnum 6K32T & 6K32TRC Managed Switch Installation and User Guide 05/07)
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correctly applied to the two inputs. It protects the Switch from incorrect DC input
connections. An incorrect polarity connection, for example, will neither affect the
Switch, its internal power supply, nor will it blow the fuse in the internal power supply.
The manual power “On-Off” Switch (optional) is used for powering the unit on
and off when it is placed into or taken out of service.
B3.0 APPLICATIONS FOR DC POWERED SWITCHES
Magnum 6K32T & 6K32TRC Fiber Switches are easily installed in a variety of
applications where -48VDC, 24VDC and 125VDC power is used as the primary power
source. The- 48VDC, 24VDC and 125VDC power configuration provides an Ethernet
networking solution utilizing a special power supply in a Managed Switch.
The –48VDC solution is particularly useful in the telecommunication industry,
where it is common for facilities to operate on -48VDC power. Such companies include
regular and wireless telephone service providers, Internet Service Providers (ISPs) and
other communication companies. In addition, many high availability equipment services,
such as broadcasters, publishers, newspaper operations, brokerage firms and other
facilities often use a battery backup system to maintain operations in the event of a power
failure. It is also frequently used for computer system backup, management and
operations monitoring equipment.
The 24VDC and 125VDC solution are particularly useful in the Industrial
environment, where it is common facilities to operate on 24VDC or 125VDC power. The
125VDC solution is mainly used in power utilities, such as electrical substations,
electrical generating plants, etc. The 24VDC applications are mainly in the Industrial
environment, such as factory floor, HVAC equipment, military equipment, etc.
B4.0 INSTALLATION
This section describes the installation of the -48 VDC, 24VDC and 125VDC
power source leads to the -48 VDC, 24VDC and 125VDC power terminal block on the
Magnum 6K32T & 6K32TRC’s. (see figure at right).
In this picture, the -48VDC terminal block on the Magnum 6K32T &
6K32TRC is located on the rear of the unit and is equipped with three (3) screw-down
lead posts. It is similar for 24VDC and 125VDC options on Magnum 6K32T &
6K32TRC. The leads are identified as negative (-),
positive (+), and chassis ground (GND).
Figure B4.0: -48VDC Terminal Block on Magnum 6K32T & 6K32TRC-
48VDC