7
Introduction to the technical reference manual
Chapter 1
Introduction
BLKDEL
Block of delayed fault clearing
BOM
Binary output module
BR
Binary transfer receive over LDCM
BS
British Standard
BSR
Binary Signal Receive (SMT) over LDCM
BST
Binary Signal Transmit (SMT) over LDCM
BT
Binary Transfer Transmit over LDCM
C34.97
CAN
Controller Area Network. ISO standard (ISO 11898) for serial communi-
cation
CAP 531
Configuration and programming tool
CB
Circuit breaker
CBM
Combined backplane module
CCITT
Consultative Committee for International Telegraph and Telephony. A
United Nations sponsored standards body within the International Tele-
communications Union.
CCS
Current circuit supervision
CEM
Controller area network emulation module
CIM
Communication interface module
CMPPS
Combined Mega Pulses Per Second
CO cycle
Close-Open cycle
Co-directional
Way of transmitting G.703 over a balanced line. Involves two twisted
pairs making it possible to transmit information in both directions
Contra-directional
Way of transmitting G.703 over a balanced line. Involves four twisted
pairs of with two are used for transmitting data in both directions, and
two pairs for transmitting clock signals
CPU
Central Processor Unit
CR
Carrier Receive
CRC
Cyclic Redundancy Check
CRL
POR carrier for WEI logic
CS
Carrier send
CT
Current transformer
CT1L1
Input to be used for transmit CT group 1line L1 in signal matrix tool
CT1L1NAM
Signal name for CT-group 1line L1 in signal matrix tool
CT2L3
Input to be used for transmission of CT-group 2 line L3 to remote end
CT2N
Input to be used for transmission of CT-group 2 neutral N to remote end.
CVT
Capacitive voltage transformer
Summary of Contents for REL 501-C1 2.5
Page 1: ...Technical reference manual Line distance protection terminal REL 501 C1 2 5 ...
Page 2: ......
Page 26: ...14 Introduction to the technical reference manual Chapter 1 Introduction ...
Page 42: ...30 Technical data Chapter 2 General ...
Page 66: ...54 Blocking of signals during test BST Chapter 3 Common functions ...
Page 142: ...130 Time delayed overvoltage protection TOV Chapter 6 Voltage ...
Page 162: ...150 Autorecloser AR Chapter 9 Control ...
Page 174: ...162 Event function EV Chapter 10 Logic ...
Page 210: ...198 Serial communication Chapter 12 Data communication ...
Page 226: ...214 Serial communication modules SCM Chapter 13 Hardware modules ...
Page 230: ...218 Terminal diagrams Chapter 14 Diagrams Figure 87 REL 501 C1 with DC switch ...
Page 234: ...222 Terminal diagrams Chapter 14 Diagrams ...
Page 237: ......