- play_arrow Fast Track: Initial Installation
- play_arrow Site Planning, Preparation, and Specifications
- play_arrow Initial Installation and Configuration
- play_arrow Maintaining Components
- Maintaining MX480 Components
- Maintaining MX480 Cooling System Components
- Maintaining MX480 Host Subsystem Components
- Maintaining MX480 Interface Modules
- Maintaining MX-SPC3 Services Card
- Maintaining MX480 Power System Components
- Maintaining MX480 SFP and XFP Transceivers
- Maintaining MX480 Switch Control Boards
- play_arrow Troubleshooting Hardware
- play_arrow Contacting Customer Support and Returning the Chassis or Components
- play_arrow Safety and Compliance Information
- General Safety Guidelines and Warnings
- Definitions of Safety Warning Levels
- Qualified Personnel Warning
- Fire Safety Requirements
- Warning Statement for Norway and Sweden
- Preventing Electrostatic Discharge Damage to an MX480 Router
- Installation Instructions Warning
- MX480 Chassis Lifting Guidelines
- Ramp Warning
- Rack-Mounting and Cabinet-Mounting Warnings
- Grounded Equipment Warning
- Laser and LED Safety Guidelines and Warnings
- Radiation from Open Port Apertures Warning
- Maintenance and Operational Safety Guidelines and Warnings
- General Electrical Safety Guidelines and Warnings
- Prevention of Electrostatic Discharge Damage
- AC Power Electrical Safety Guidelines
- AC Power Disconnection Warning
- DC Power Copper Conductors Warning
- DC Power Disconnection Warning
- DC Power Grounding Requirements and Warning
- DC Power Wiring Sequence Warning
- DC Power Wiring Terminations Warning
- Midplane Energy Hazard Warning
- Multiple Power Supplies Disconnection Warning
- Action to Take After an Electrical Accident
- MX480 Agency Approvals and Compliance Statements
- Statements of Volatility for Juniper Network Devices
MX480 Power System Description
The MX480 router uses either AC or DC power supplies. The MX480 router is configurable with two, three, or four AC power supplies or two or four DC power supplies. The power supplies connect to the midplane, which distributes the different output voltages produced by the power supplies to the router components, depending on their voltage requirements. Each power supply is cooled by its own internal cooling system.
The router cannot be powered from AC and DC power supplies simultaneously.
Redundant power supplies are hot-removable and hot-insertable, as described in MX480 Field-Replaceable Units (FRUs).
When you remove a power supply from a router that uses a nonredundant power supply configuration, the router might shut down depending on your configuration.
Enhanced AC and DC power supplies are an upgrade for the MX480 router, and satisfy power requirements for higher-density DPCs. When upgrading to enhanced power supplies, always upgrade power supplies in adjacent slots.
Routers configured with DC power supplies are shipped with a blank panel installed over the power distribution modules. Routers configured with AC power supplies have no blank panel.
