System Components

This section describes the individual components that make up a complete 3500 system.

Instrument Rack

The standard 3500 Rack is available in 19” EIA rail-mount, panel-cutout-mount, and bulkhead-mount

versions.

The rack provides slots for two Power Supplies and a TDI in the left-most rack positions

that are reserved exclusively for these modules. The remaining 14 slots in the rack can

accommodate any combination of monitor, display, relay, Keyphasor module, and communication

gateway modules.

All modules plug into the rack’s backplane and consist of a main module and an associated I/O module.

The I/O module installs at the rear of the rack for panel-mount systems, and above the main module for

bulkhead-mount systems.

Standard rack depth is 349 mm (13.75 inches), while bulkhead mount rack depth is 267 mm (10.5 inches).

NEMA 4 and 4X weatherproof housings are available when required for environmental protection or

when purge air is used.

Mini Rack

A mini rack (12” wide instead of 19”) is also available and features 7 available monitor slots instead of 14.

Like its larger counterpart, the left-most slots are reserved for the Power Supply or Supplies and TDI

Module.

The mini rack may be mounted in a panel cutout or, using an optional adapter plate, on 19” EIA mounting

rails.

Bulkhead mounting is not available.