Overview
Front view (door open)
Wraparound
| maintenance bypass | | |
| panel—The | |
| maintenance bypass |
| | |
| panel has three | | |
| circuit breakers that | | |
| allow the UPS to be | | |
| | |
| electrically isolated | | |
| from the main power | | |
| source, while | | |
| maintaining the | | |
| power panels. The | | |
| input circuit breaker | | |
| is labeled Q1, the | | |
| output circuit breaker | | |
| | |
| is labeled Q2, and the | | |
| maintenance bypass | | |
| circuit breaker is | | |
| labeled Q3. The label | | |
| on the maintenance | | |
| bypass panel of the | | |
| PDU illustrates the | | |
| power flow, and the | | |
| H2 and H3 LEDs | | |
| indicate when it is | | |
| safe to operate the Q2 | | |
| and Q3 circuit | | |
| breakers. | | |
Optional bottom-feed cable access—These knockouts are for bottom-feed power cables and RDP cables. If you ordered a PDU to accommodate under-floor wiring, your power cables for equipment racks and RDPs will exit the PDU from these cable access holes.
UPS input and output cables—The cables that connect the PDU to the UPS are shipped coiled on the floor of the PDU. The input cables consist of 5 wires: 3 phases, 1 neutral, and one ground. The output cable consist of 4 wires: 3 phases and 1 neutral. The bypass cables consist of 4-wires: 3 phases and one neutral. Each wire is labeled and corresponds to a lug on the Symmetra PX UPS bus bars. During installation, the Field Service Engineer will connect the PDU to the UPS.
User connection plate—The user connection plate is connected to the PDU monitoring unit, and provides easy access to the input contacts, relay outputs, network, and EPO connections. Make connections from inside the enclosure, and route wires through the knockout provided on the plate. See “User connection plate” on page 11 for a more detailed description.
8 | 80kW InfraStruXure PDU—Operation and Configuration |
