
Determining the Operating Status
Connecting power to a Stinger unit
Stinger® FS/Stinger FS+ Getting Started Guide
3-3
For information about proper ground-wire size and length, see “Minimum ground
wire size” on page C-3.
Connecting power to a Stinger unit
!
Caution
Before connecting power, see the
Edge Access and Broadband Access Safety and
Compliance Guide
for safety instructions and circuit regulatory information.
Warning
Verify that the power is off or disconnected at the source before beginning
this procedure.
To connect the unit to dc power:
1
Verify that the correct power source is available for the Stinger unit.
2
Verify that the dc power cables comply with national standards and specifications as
described in IEC 60950 and are terminated in number 10 ring lugs.
3
Figure 3-1 shows how to connect power to the Stinger unit. Be sure to attach a power cable
to each set of power connectors as follows. Both power cables must be connected at all
times when the unit is in operation.
–
Verify that the power switch on the power filters is set to the OFF position.
–
Locate the number 10 studs on the back of the unit.
–
Using a number 2 Phillips screwdriver, remove the two screws that secure
the protective cover over the studs. Then remove the protective cover.
–
Using a 3/8-inch wrench or socket, remove the top locking nut from each of
the two studs, labeled for the input supply voltage (-48Vdc or -60Vdc) and
return (RTN). Do not remove the bottom locking nut.
Note
If labeling for the supply voltage indicates -48Vdc, the power supply must
be connected to a -48Vdc power source. If the labeling for the supply voltage
indicates -48/-60Vdc, it can be connected to either a -60Vdc or -48Vdc power
source.
–
Install the ring lugs onto the appropriate posts.
Note
You can ground the chassis by attaching ground lugs on the back or front
of the unit. (A front ground terminal is only available on chassis manufactured
after November 2005.) Do not remove the ground lugs.
–
Reinstall the locking nut onto each post, then use a 3/8-inch wrench or
socket to tighten the nut.
–
Reinstall the protective cover with the two screws.