Chassis Power System; Safety Guidelines - Cisco SRS Series Installation Manual

Overview
5 Upper fan tray

Chassis Power System

Two types of power systems are available for the LCC: fixed configuration power and modular configuration
power. Both power systems can be powered by either AC or DC power.
The chassis power system takes the facility power and converts it to the DC voltage necessary to power chassis
components. Both types of power system comprise:
• Redundant AC or DC power shelves
• Alarm modules, one per power shelf
• Bus bar
• Chassis midplane

Safety Guidelines

Before you perform any procedure in this document, review the safety guidelines in this section to avoid
injuring yourself or damaging the equipment.
Note
Although power shelves may be installed or removed without powering down the system, for safety purposes
we recommend that you power down the system before you install or remove a power shelf.
The following guidelines are for your safety and to protect equipment. The guidelines do not include all
hazards. Be alert.
Note Review the safety warnings listed in
Routing System
• Never attempt to lift an object that might be too heavy for you to lift by yourself.
• Keep the work area clear and dust free during and after installation. Do not allow dirt or debris to enter
• Keep tools and router components away from walk areas.
• Do not wear loose clothing, jewelry, and other items that could get caught in the router while working
• Use Cisco equipment in accordance with its specifications and product-usage instructions.
• Do not work alone if potentially hazardous conditions exist.
• Make sure your installation follows national and local electrical codes: in the United States, National
• Connect only a DC power source that follows the safety extra-low voltage (SELV) requirements in
before installing, configuring, or troubleshooting any installed card.
into any laser-based components.
with PLIMs, MSCs, SFCs, and their associated components.
Fire Protection Association (NFPA) 70, United States National Electrical Code; in Canada, Canadian
Electrical Code, part I, CSA C22.1; in other countries, International Electrotechnical Commission (IEC)
60364, part 1 through part 7.
UL/CSA/IEC/EN 60950-1 and AS/NZS 60590 to the DC-input power system.
10 Rear (MSC) side of chassis
Regulatory Compliance and Safety Information for the Cisco CRS Carrier
Cisco CRS Routers 16-Slot Line Card Chassis Installation Guide
Chassis Power System
13