Magnum Quad-Series Fiber Switches Installation and User Guide (06/03)
Power Connector: 3 terminals: “
-
“, “GND”, “+”
Input Voltage: 36 - 70 VDC
Power Supply (Internal 24 VDC Option)
DC
DC Power Connector: 3 terminals: “
-
“, “GND”, “+”
Inpu
er S
ol
Surge
power spike
Power
Wit
M gnum
id tical
B2. -48V
The -48VDC, 24, 100 and 125VDC power options are designed using diodes
two external power connection terminals,
hat th power fr
flow ad-
Se
in
po
in
nit on
an
B
ions
ed as the primary power source. The DC
er co izing a
sp
The –48VDC solution is particularly useful in the telecommunication industry,
w re it i clude
re Providers (ISPs) and
her communication companies. In addition, many high availability equipment services,
t Voltage: 20-36 VDC
ow uP pply (Internal 125 or 100VDC Option)
DC Power Connector: 3 terminals: “
-
“, “GND”, “+”
Input V tage: “125” = 120 - 160 VDC range, “100” = 90 to 160VDC range
Suppression: Varistors are installed inside to avoid QS internal damage from
s or excess outside electrical noise coming in on the DC power input lines
Consumption: all DC Model QS5108, QS5116: 30 watt typical,50 watts max.
h the exception of the power supply, all specifications and functions of
a Quad-Series Switches-48VDC, 24VDC, 100VDC and 125VDC models are
en to those listed in the main manual.
0 DC, 24, 100, and 125VDC POWER OPTION, THEORY OF OPERATION
inside on each DC power input line behind the
so t e om an external source can
only into the unit. This allows the Qu
r i perate only whenever DC ies Sw tches to o
power is correctly applied to the two inputs.
It protects the Quad-Series Switches from
correct DC input connections. An incorrect
larity connection, for example, will neither affect the Quad-Series Switches, its
ternal power s
A+
A-
GND
GND
CHASSIS
FUSE
+
-
SUPPLY
HUB
POWER SWITCH
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
d off when it is placed into or taken out of service.
0 3. 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 nfigurationcapability provides an Ethernet networking solution util
ecial power supply in switches with a proven track record.
he s common for facilities to operate on -48VDC power. Such companies in
gular and wireless telephone service providers, Internet Service
ot
such as broadcasters, publishers, newspaper operations, brokerage firms and other
acilities often use a battery backup system to maintain operations in the event of a power f
failure. It is also frequently used for computer system backup, management and
operations monitoring equipment.
45
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