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 | Warning Read the installation instructions before you connect the system to its power source. |
| Warning Only trained and qualified personnel should be allowed to install or replace this equipment. |
Install the equipment in compliance with the following national codes:
| Warning Before working on equipment that is connected to power lines, remove jewelry (including rings, necklaces, and watches). Metal objects will heat up when connected to power and ground and can cause serious burns or weld the metal object to the terminals. |
| Warning Before working on a system that has an on/off switch, turn off the power and unplug the power cord. |
| Warning This unit might have more than one power cord. To reduce the risk of electric shock, disconnect the two power supply cords before servicing the unit. |
| Warning Before opening the chassis, disconnect the telephone-network cables to avoid contact with telephone-network voltages. |
| Warning Ultimate disposal of this product should be handled according to all national laws and regulations. |
| Warning Never defeat the ground conductor or operate the equipment in the absence of a suitably installed ground conductor. Contact the appropriate electrical inspection authority or an electrician if you are uncertain that suitable grounding is available. |
| Warning Do not stack the chassis on any other equipment. If the chassis falls, it can cause severe bodily injury and equipment damage. |
Follow these safety guidelines when working with any electrical equipment:
In addition, follow these guidelines when working with any equipment that is disconnected from a power source but still connected to telephone wiring or other network cabling:
| Warning Do not work on the system or connect or disconnect cables during periods of lightning activity. |
 | Caution Always tighten the captive installation screws on the port adapters when installing them. These screws prevent accidental removal, provide proper grounding for the system, and help to ensure that the bus connectors are properly seated in the backplane. |
Follow these guidelines to prevent ESD damage:
| Warning During this procedure, wear grounding wrist straps to avoid ESD damage to the card. Do not directly touch the backplane with your hand or any metal tool, or you could shock yourself. |
| Caution For safety, periodically check the resistance value of the antistatic strap. The measurement should be between 1 and 10 megohms (Mohms). |
Follow these safety guidelines:
| Warning Three people are required to lift the chassis. Grasp the chassis underneath the lower edge and lift with both hands. To prevent injury, keep your back straight and lift with your legs, not your back. To prevent damage to the chassis and components, never attempt to lift the chassis with the handles on the power supplies or on the interface processors, or by the plastic panels on the front of the chassis. These handles were not designed to support the weight of the chassis. |
An optional redundant power supply is also available. Redundant power ensures that power to the chassis continues uninterrupted in the event that one power supply fails. If your switch includes a redundant power supply, connect each of the two power supplies to a separate input power source. Failure to do so creates an environment where your system is susceptible to total power failure because of a fault in the external wiring or a tripped circuit breaker.
Refer to Table 1-1 for AC and DC power supply specifications.
| Description | Specifications |
|---|---|
| AC Power Supply Specifications | |
AC total output | 376W maximum |
AC-input voltage | 100 to 240 VAC wide input with power factor correction |
AC frequency | 50 to 60 Hz |
AC current | Rated 16 to 8A |
Power supply load | 376W maximum configuration, 200W typical with maximum configuration |
AC voltages supplied and steady-state maximum current ratings | +5V @ 70A; +12V @ 2A; +24V @ 0.12A |
Heat dissipation | 1760W (6000 Btu1/hr) |
DC Power Supply Specifications | |
DC total output | 388W maximum |
DC-input current | Rated 40A |
Power supply load | 388W maximum, 200W typical with maximum configuration |
DC voltages supplied and steady-state maximum current ratings | +5V @ 70A; +12V @ 2A; +24V @ 0.12A |
DC input voltage | -48 to -60 VDC continuous |
Heat dissipation | 1800W (6140 Btu/hr) |
DC wire gauge for power cable | |
| 1Btu = British thermal units. 2AWG = American Wire Gauge. 3You can use smaller wire if the minimum input voltage for the installation is not violated. |
| Caution To avoid problems or damage to the switch, do not mix DC-input power supplies with AC-input power supplies in individual switches. |
| Warning This unit is intended for installation in restricted access areas. A restricted access area is where access can only be gained by service personnel through the use of a special tool, lock and key, or other means of security, and is controlled by the authority responsible for the location. |
| Warning The device is designed to work with TN power systems. |
| Warning Do not touch the power supply when the power cord is connected. For systems with a power switch, line voltages are present within the power supply even when the power switch is off and the power cord is connected. For systems without a power switch, line voltages are present within the power supply when the power cord is connected. |
| Warning Before working on a chassis or working near power supplies, unplug the power cord on AC units; disconnect the power at the circuit breaker on DC units. |
| Warning This product relies on the building's installation for short-circuit (overcurrent) protection. Ensure that a fuse or circuit breaker no larger than 120 VAC, 30A U.S. (240 VAC, 20A international) is used on the phase conductors (all current-carrying conductors). |
| Warning The plug-socket combination must be accessible at all times because it serves as the main disconnecting device. |
The following warnings and cautions apply to DC power supplies:
| Warning This product relies on the building's installation for short-circuit (overcurrent) protection. Ensure that a Listed and Certified fuse or circuit breaker 50A, minimum 60 VDC is used on all current-carrying conductors. |
| Warning A readily accessible two-poled disconnect device must be incorporated in the fixed wiring. |
| Warning Before performing any of the following procedures, ensure that power is removed from the DC circuit. To ensure that all power is off, locate the circuit breaker on the panel board that services the DC circuit, switch the circuit breaker to the off position, and tape the switch handle of the circuit breaker in the off position. |
| Warning Care must be given to connecting units to the supply circuit so that wiring is not overloaded. |
| Warning This equipment is intended to be grounded. Ensure that the host is connected to earth ground during normal use. |
| Warning When stranded wiring is required, use approved wiring terminations, such as closed-loop or spade-type with upturned lugs. These terminations should be the appropriate size for the wires and should clamp both the insulation and conductor. |
We provide a standard rack-mount kit for mounting the switch in a standard 19-inch equipment rack. This kit is not suitable for racks with obstructions (such as a power strip) that could impair access to switch field-replaceable units (FRUs).
The equipment rack must have the following dimensions:
| Warning To prevent bodily injury when mounting or servicing this unit in a rack, you must take special precautions to ensure that the system remains stable. The following guidelines are provided to ensure your safety: |
To ensure normal operation and avoid unnecessary maintenance, plan your site configuration and prepare your site before installation. After installation, make sure the site maintains an ambient temperature of 32 to 104ºF (0 to 40ºC), and keep the area around the chassis as free from dust as possible.
| Warning To prevent the switch from overheating, do not operate it in an area that exceeds the maximum recommended ambient temperature of 104° F (40° C). To prevent airflow restriction, allow at least 3 inches (7.6 cm) of clearance around the ventilation openings. |
You can rack-mount multiple switches with little or no clearance above and below the chassis. When you mount a switch in a rack with other equipment or place a switch on the floor adjacent to other equipment, ensure that the exhaust from other equipment does not blow into the intake vent (lower front panel) of the switch.
Table 1-2 lists the operating and nonoperating environmental site requirements. To maintain normal operation and ensure high system availability, maintain an ambient temperature and clean power at your site. The switch operates in the ranges listed in Table 1-2; however, a measurement that is approaching the minimum or maximum of a range indicates a potential problem. You can maintain normal operation by anticipating and correcting environmental anomalies before they exceed the maximum operating range.
| Environment | Minimum | Maximum |
|---|---|---|
Temperature, ambient operating | 32ºF (0ºC) | 104ºF (40ºC) |
Temperature, ambient nonoperating and storage | -4ºF (-20ºC) | 149ºF (65ºC) |
Humidity (RH), ambient (noncondensing) operating | 10% | 90% |
Humidity (RH), ambient (noncondensing) nonoperating and storage | 5% | 95% |
Altitude, operating and nonoperating | Sea level | 10,000 ft. (3050 m) |
Vibration, operating | 5 to 200 Hz, 0.5 g (1oct./min.) | --- |
Vibration, nonoperating | 5 to 200 Hz, 1 g (1 oct./min.) | --- |
Before installing the switch, make sure all the additional external equipment and cables are on hand.
| Warning Because invisible laser radiation may be emitted from the aperture of the port when no cable is connected, avoid exposure to laser radiation and do not stare into open apertures. Following is an example of the warning label that appears on the product: |
The following warning applies to OC-12 and OC -48:
| Warning Class 1 laser product. |
For chassis installation instructions, refer to Installing the Catalyst 8540 Chassis.
Posted: Thu Sep 2 10:07:31 PDT 1999
Copyright 1989-1999©Cisco Systems Inc.