HP Integrity Superdome SX1000 User Guide, Sixth Edition - HP Integrity Superdo - Page 171

Cable Installation Site Preparation Power Options NOTE These procedures may be used for early deliveries consisting of either option 1 or option 2 as well as those later systems delivered with PDCA cables attached. Select the proper cable using the following criteria. • Each cabinet using a 3-phase, 4-wire input is required to have a four-conductor cable. The four-conductor cable selected by the facility electrician shall be in accordance with local electrical codes to support the selected circuit breaker for the maximum Product Label current of 44A per phase. The facility electrician and local electrical codes will determine proper power cord selection dependent upon desired application such as rigid conduit, flexible conduit, or cable bundle. Observe derating factors for multiple wires per cable. • Each cabinet using a 3-phase 5-wire input is required to have a five-conductor cable. The five-conductor cable selected by the facility electrician shall be in accordance with local electrical codes to support the selected circuit breaker for the maximum Product Label current of 24A per phase. The facility electrician and local electrical codes will determine proper power cord selection dependent upon desired application such as rigid conduit, flexible conduit, or cable bundle. Observe derating factors for multiple wires per cable. Step 1. Prepare the new cable as shown in Figure 5-13 on page 160. Step 2. Using the cable retaining hardware saved from the cable removal, route the new cable into the PDCA. Step 3. Route the cable into the PDCA terminal lugs and secure in position by tightening the lugs. Step 4. Using the hardware that was retained during the cable removal, attach the green and yellow ground cable. Step 5. Using the five screws retained from the removal procedure, replace the bottom panel on the PDCA. Refer to Figure 5-11 on page 158 for panel installation details. Step 6. To verify the proper wiring to a 4-wire PDCA, use a DVM to measure the voltage at the test points. Voltage should read 200 - 240 Vac phase-to-phase as measured between the test points as follows: L1 to L2, L2 to L3, L1 to L3. IMPORTANT In some electrical distributions around the world, it is possible to measure 415 VAC phase-to-phase. Ensure that your DVM is capable of measuring AC voltages of at least 500VAC. A number of 5-wire power distribution systems may have phase-to-phase voltages in excess of 400VAC. Many hand-held volt meters are limited to 300VAC. Chapter 5 159