Ac Power Supply Load Sharing And Fault Tolerance; Figure 35: Three-Phase Wye Ac Power Supply; Figure 36: Three-Phase Wye Ac Power Supply Connections; Figure 37: Wye Three-Phase Ac Power Cord - Juniper T640 Hardware Manual

Chapter 3: T640 Router Hardware Component Overview

Figure 35: Three-Phase Wye AC Power Supply

Figure 36 on page 59 shows the three-phase wye AC power supply connections.

Figure 36: Three-Phase Wye AC Power Supply Connections

L1 L2 L3 N
Figure 37 on page 59 shows the three-phase wye AC power cord.

Figure 37: Wye Three-Phase AC Power Cord

AC Power Supply Load Sharing and Fault Tolerance

When the router is operating normally and both power supplies are switched on, load
sharing between them occurs automatically. When one power supply fails or is turned
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