GarrettCom Magnum Quad-Series Installation And User Manual page 51

Magnum Quad-Series Fiber Switches
DC Power Connector: 3 terminals: "
Input Voltage:
Power Supply (Internal 24 VDC Option)
DC Power Connector: 3 terminals: "
Inpu t Voltage:
P ow er S u pply (Internal 125 or 100VDC Option)
DC Power Connector: 3 terminals: "
Input V tage: "125" = 120 - 160 VDC range, "100" = 90 to 160VDC range ol
Surge Suppression: Varistors are installed inside to avoid QS internal damage from
power spike s or excess outside electrical noise coming in on the DC power input lines
Power Consumption: all DC Model QS5108, QS5116: 30 watt typical,50 watts max.
Wit h the exception of the power supply, all specifications and functions of
M gnum a Quad-Series Switches-48VDC, 24VDC, 100VDC and 125VDC models are
id tical en to those listed in the main manual.
B2. -48V 0 DC, 24, 100, and 125VDC POWER OPTION, THEORY OF OPERATION
The -48VDC, 24, 100 and 125VDC power options are designed using diodes
inside on each DC power input line behind the
so t hat th power fr e
only flow into the unit. This allows the Qu
Se r ies Sw tches to o i
power is correctly applied to the two inputs.
It protects the Quad-Series Switches from
in correct DC input connections. An incorrect
po larity connection, for example, will neither affect the Quad-Series Switches, its
in ternal power s upply, nor will it blow the fuse in the internal power supply.
The manual power "On-Off" Switch (optional) is used for powering the u
an d off when it is placed into or taken out of service.
B 3. 0 APPLICATIONS FOR DC POWERED ETHERNET SWITCHES
Magnum Quad-Series Switches are easily installed in a variety of applicat
where -48VDC, 24, 100 or 125VDC power is us
pow er co nfigurationcapability provides an Ethernet networking solution util
sp ecial power supply in switches with a proven track record.
The –48VDC solution is particularly useful in the telecommunication industry,
w re it i he s common for facilities to operate on -48VDC power. Such companies in
re gular and wireless telephone service providers, Internet Service
ot her communication companies. In addition, many high availability equipment services,
such as broadcasters, publishers, newspaper operations, brokerage firms and other
f acilities 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.
www GarrettCom com . .
36 - 70 VDC
20-36 VDC
om an external source can
perate only whenever DC
Installation and User Guide (06/03)
-
", "GND", "+"
-
", "GND", "+"
-
", "GND", "+"
two external power connection terminals,
ad-
A+
A-
GND
ed as the primary power source. The DC
45
POWER SWITCH
HUB
SUPPLY
+
-
CHASSIS
nit on
izing a
clude
Providers (ISPs) and
FUSE
GND
ions