6
Introduction to the technical reference manual
Chapter 1
Introduction
1.3
Intended audience
1.3.1
General
This manual addresses system engineers, installation and commissioning personnel, who use
technical data during engineering , installation and commissioning, and in normal service.
1.3.2
Requirements
The system engineer must have a thorough knowledge of protection systems, protection equip-
ment, protection functions and the configured functional logics in the protective devices. The
installation and commissioning personnel must have a basic knowledge in the handling electron-
ic equipment.
1.4
Related documents
1.5
Revision notes
1.6
Acronyms and abbreviations
Documents related to REL 551-C1*2.5
Identity number
Operator's manual
1MRK 506 206-UEN
Installation and commissioning manual
1MRK 506 208-UEN
Technical reference manual
1MRK 506 207-UEN
Application manual
1MRK 506 209-UEN
Buyer's guide
1MRK 506 205-BEN
Revision
Description
C
CTSU Technical data updated
AC
Alternating Current
ACrv2
Setting A for programmable overvoltage IDMT curve, step 2
A/D converter
Analog to Digital converter
ADBS
Amplitude dead-band supervision
AIM
Analog input module
ANSI
American National Standards Institute
ASCT
Auxiliary summation current transformer
ASD
Adaptive Signal Detection
Summary of Contents for REL 551-C1*2.5
Page 1: ...Technical reference manual ProtectIT Line differential protection terminal REL 551 C1 2 5 ...
Page 23: ...14 Introduction to the technical reference manual Chapter 1 Introduction ...
Page 39: ...30 Technical data Chapter 2 General ...
Page 63: ...54 Blocking of signals during test BST Chapter 3 Common functions ...
Page 71: ...62 Line differential protection phase segregated DIFL Chapter 4 Line differential protection ...
Page 89: ...80 Thermal phase overload protection THOL Chapter 5 Current ...
Page 101: ...92 Event function EV Chapter 7 Logic ...
Page 163: ...154 Terminal diagrams Chapter 11 Diagrams Figure 39 REL 551 C1 with DC switch ...