Cabletron Systems 100BASE-FX, Руководство по кабельной продукции

Страница: 138 / 192

Cabling Devices
13-2 Hardware Mounting
Hardware Mounting
Relay Rack
The relay rack, or electrical equipment rack, is a metal frame that is commonly
used to secure and support networking, electrical, or telephony equipment in
network centers or wiring closets. Most large cable management devices and
networking products such as modular chassis are designed to be either mounted
directly in the relay rack or placed on shelves set up in the rack.
Relay racks are available in a range of heights from as small as one meter (3.28 ft)
to as tall as two meters (6.56 ft) or more. Equipment is fastened to the rack with
screws or bolts. The bolts are passed through some form of frame on the device to
be mounted in the rack and through the upright, perforated metal supports of the
relay rack. Once tightened, the bolts hold the equipment safely.
Figure 13-1. Relay Rack
When loading a relay rack, attempt to keep the majority of the
weight of the components at or near the bottom of the rack.
Locating heavy devices at the top of the rack can lead to
top-heaviness, which can cause the rack to tip over and cause
damage to equipment or potential injury.
May be mounted on casters
or bolted to floor
19" Wide
1845n29