DESCRIPTION OF HARDWARE

Complete system

An RE. 216 protection system comprises at least an electronic equipment rack Type 216MB62 with the electronic modules in serted (plug-in units) and a number of I/O units, which are in ef fect the interface with the primary plant. The protection system is available as a cubicle version or as a compact version.

shows an example of a 216MB61 equipment rack installed in the hinged frame of a protection cubicle. The elec tronic modules are designed as plug-in units, which are inserted from the front. The B448C parallel bus provides communication between the electronic units and is fitted to the rear of the rack. Also situated at the rear are the connectors for the standard ca bles to the I/O units and for connecting a printer.

The input transformer, auxiliary relay I/O and tripping relay units are mounted on the inside of the rear panel of the protection cubicle。

The number and type of electronic units installed, their locations in a rack, the number of racks and the number and arrangement of I/O units varies from plant to plant.

Refer to the corresponding set of diagrams for the execution of an RE. 216 system for a particular plant.

A compact version of the REG 216 protection is also available, which is basically a standardised equipment rack (see Section 2.3.). The compact version can be mounted either in an open frame or in a cubicle with other equipment.