Dell Olympus O-T600 Installation And Service Manual

3. Disconnect the safety ground wire.StepsPress the release latch and slide the PSU out of the system by using the PSU handle.Next steps1. Install the DC PSU.Installing DC power supply unitPrerequisitesNOTE: For equipment using –(48–60) V DC power supply units (PSUs), a qualified electrician must perform all connectionsto DC power and to safety grounds. Do not attempt connecting to DC power or installing grounds yourself. All electricalwiring must comply with applicable local or national codes and practices. Damage due to servicing that is not authorized byDell is not covered by your warranty. Read and follow all safety instructions that came with the product.1. Follow the safety guidelines listed in Safety instructions on page 27.2. For systems that support redundant power supply units (PSUs), ensure that both the PSUs are of the same type and havethe same maximum output power.NOTE: The maximum output power (shown in watts) is listed on the PSU label.StepsSlide the PSU into the system until the PSU is fully seated and the release latch snaps into place.Next steps1. Connect the safety ground wire.2. Install the DC power connector in the PSU.CAUTION: When connecting the power wires, ensure that you secure the wires with the strap to the PSUhandle.3. Connect the wires to a DC power source.NOTE: When installing, hot-swapping, or hot-adding a new PSU, wait for 15 seconds for the system to recognize thePSU and determine its status. The PSU status indicator turns green to signify that the PSU is functioning properly.Wiring instructions for a DC power supply unitYour system supports up to two –(48–60) V DC power supply units (PSUs).NOTE: For equipment using –(48–60) V DC power supply units (PSUs), a qualified electrician must perform all connectionsto DC power and to safety grounds. Do not attempt connecting to DC power or installing grounds yourself. All electricalwiring must comply with applicable local or national codes and practices. Damage due to servicing that is not authorized byDell is not covered by your warranty. Read and follow all safety instructions that came with the product.CAUTION: Wire the unit with copper only, unless otherwise specified, use only 10 American Wire Gauge (AWG)wire rated minimum 90ºC for source and return. Protect the –(48–60) V DC (1 wire) with a branch circuitover-current protection rated 50 A for DC with a high interrupt current rating.CAUTION: Connect the equipment to a –(48–60) V DC supply source that is electrically isolated from the ACsource (reliably grounded –(48–60) V DC SELV source). Ensure that the –(48–60) V DC source is efficientlysecured to earth (ground).NOTE: A readily accessible disconnect device that is suitably approved and rated shall be incorporated in the field wiring.Installing and removing system components 47