ABB REG316 4 Series Operating Instructions Manual page 8

ABB Switzerland Ltd
1. INTRODUCTION
1.1. General
The numerical generator protection scheme REG 316*4 is one of
the new generation of fully digital protection systems, i.e. the
analogue-to-digital conversion of the measured input variables
takes place immediately after the input transformers and the re-
sulting digital signals are processed exclusively by programmed
micro-processors.
Within the PYRAMID
tion, REG 316*4 represents one of the compact generator
protection units.
Because of its compact design, the use of only a few different
hardware units, modular software and continuous self-monitoring
and diagnostic functions, the REG 316*4 scheme optimally fulfils
all the demands and expectations of a modern protection
scheme with respect to efficient economic plant management
and technical performance.
The AVAILABILITY — the ratio between fault-free operating time
and total operational life — is certainly the most important re-
quirement a protection device has to fulfil. As a result of con-
tinuous monitoring, this ratio in the case of REG 316*4 is almost
unity.
Operation, wiring and compactness of the protection are the es-
sence of SIMPLICITY thanks to the interactive, menu-controlled
man/machine communication (HMC) program. Absolute FLEXI-
BILITY of the REG 316*4 scheme, i.e. adaptability to a specific
primary system or existing protection (retrofitting), is assured by
the supplementary functions incorporated in the software and by
the ability to freely assign inputs and outputs via the HMC.
Decades of experience in the protection of generators have gone
into the development of the REG 316*4 to give it the highest
possible degree of RELIABILITY, DISCRIMINATION and STA-
BILITY. Digital processing of all the signals endows the scheme
with ACCURACY and constant SENSITIVITY throughout its
useful life.
The designation "RE. 316*4" is used in the following
sections of these instructions whenever the information
applies to the entire series of devices.
1-2
REG 316*4 1MRB520049-Uen / Rev. B
®
system for integrated control and protec-