Installation Guide

To install the 850 W DC power supply, perform the following tasks in the order listed:
1. Make sure you have the tools and materials you need.
See Required Tools and Materials for Installing an 850 W DC Power Supply on page 346.
2. Prepare the power cables and ground cable by attaching the provided connection lugs to the cables.
See Preparing the Cables for an 850 W DC Power Supply on page 346.
3. Insert the power supply into the switch.
See Installing an 850 W DC Power Supply on page 347.
4. Connect the ground wire.
See Connecting the Ground Wire to an 850 W DC Power Supply on page 348.
5. Connect the power supply to the DC source voltage.
See Connecting an 850 W DC Power Supply to the DC Source Voltage on page 348.
6. Energize the DC circuit.
Required Tools and Materials for Installing an 850 W DC Power Supply
You need the following tools and materials to install or remove an 850 W DC power supply in a Summit
X650 series switch.
• Two spade terminals #8, M4 stud size, 16-14 AWG (1.25 to 2mm) wire size (Tyco part number 325199
or equivalent) for connecting the input power cables
• One ring terminal (Tyco part number 130496 or equivalent) and screw with captive lock washer
(type M3.5) for connecting the ground wire (both provided)
• #12 AWG stranded copper cable for grounding the power supply and connecting the power supply
to the DC power source. (A DC power cord is not included with the power supply.) Recommended
insulation colors are:
◦ Red for the –48 V connection (–)
◦ Black for the –48 V RTN connection (+)
◦ Green or green with yellow stripe for the ground connection
• Connection hardware appropriate to the installation site:
◦ Hardware for connecting the power wires to the DC source
◦ Hardware for connecting the ground wire to the site grounding point
• Stripping tool
• Crimping tool for attaching the lug to the ground wire
• #2 Phillips screwdriver
• Torque screwdriver and wrench or torque driver with attachments for tightening screws and nuts
• ESD-preventive wrist strap
• Thermal protective gloves (required for removal of a power supply)
Connection lugs for power and ground and a screw for connecting the ground wire are shipped with the
power supply.
Preparing the Cables for an 850 W DC Power Supply
A ring terminal and two spade terminals are provided with the power supply. You need a crimping tool
to attach the terminals to the power and ground cables.
To prepare the cable wires, follow these steps:
Installing an 850 W Internal DC Power Supply
Installing Switches
346 Summit Family Hardware Installation Guide