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TX Matrix Plus Seven-Input 420-A Power Supplies Description

 

Seven-Input 420-A Power Supplies Components

Each seven-input 420-A power supply consists of a removable input power tray with seven inputs (Figure 2), seven 60-A circuit breakers, a fan (each power supply is cooled by its own internal cooling system), and LEDs to monitor the status of the power supply.

Each seven-input 420-A power supply weighs approximately 35.5 lb (16.1 kg). The input power tray weighs 3.7 lb (1.7 kg).

Figure 1 shows the seven-input 420-A power supply.

Figure 1: TX Matrix Plus Seven-Input 420-A Power Supply with Input Power Tray Removed
TX Matrix Plus Seven-Input
420-A Power Supply with Input Power Tray Removed
Figure 2: TX Matrix Plus Input Power Tray
TX Matrix Plus Input Power Tray

Seven-Input 420-A Power Supply Load Sharing and Fault Tolerance

When the TX Matrix Plus 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 off, the other power supply immediately assumes the entire electrical load for the system. A single power supply can provide full power for as long as the TX Matrix Plus router is operational. Table 1 describes the behavior of the power supply if an input fails.

Table 1: TX Matrix Plus Seven-Input 420-A Power Supply Fault Tolerance

RedundancyFault Tolerance When One Input Fails or Is Disconnected

Nonredundant power supply

Note: Redundant power supplies are required for the TX Matrix Plus router. A nonredundant power supply is not supported.

If inputs 0 through 4 fail, the TX Matrix Plus router shuts down.

Redundant power supplies

If an input on one power supply fails, the other power supply assumes the electrical load for all inputs. If one input on the other power supply is not functional, the TX Matrix Plus router shuts down.