Figure 10: Three-Input 240-A Power Supply
Installing a T640 Three-Input 240-A Power Supply
Each three-input 240-A power supply weighs approximately 25 lb (11.3 kg). To install
a three-input 240-A power supply:
1. Make sure that the voltage across the DC power source cable leads is 0 V and
that there is no chance that the cables might become active during installation.
2. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and
connect the strap to one of the ESD points on the chassis. For more information
about ESD, see Preventing Electrostatic Discharge Damage to an M Series, MX
Series, or T Series Routing Platform.
3.
Switch the circuit breakers on the power supply faceplate to the OFF position (O).
4. Using both hands, slide the power supply into the chassis until you feel resistance
(see Figure 11).
5. Twist the ejector handles at the upper corners of the power supply faceplate
clockwise until they stop.
6. Tighten the captive screws at the lower corners of the power supply faceplate
to secure the power supply in the chassis.
12 ■ Installing a T640 Three-Input 240-A Power Supply
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