ABB RELION 620 Series Technical Manual page 38

Table of contents
32
User programmable inverse-time characteristics for
overvoltage protection........................................................ 1161
IDMT curve saturation of overvoltage protection................1162
IDMT curves for undervoltage protection................................ 1162
Standard inverse-time characteristics for undervoltage
protection............................................................................1163
User-programmable inverse-time characteristics for
undervoltage protection......................................................1165
IDMT curve saturation of undervoltage protection............. 1166
Frequency measurement and protection......................................1166
Measurement modes....................................................................1167
Calculated measurements............................................................1169
Section 12 Requirements for measurement transformers............1171
Current transformers.................................................................... 1171
Current transformer requirements for overcurrent protection.. 1171
Current transformer accuracy class and accuracy limit
factor.................................................................................. 1171
Non-directional overcurrent protection............................... 1172
Example for non-directional overcurrent protection............1173
Section 13 IED physical connections........................................... 1175
Module slot numbering................................................................. 1175
Protective earth connections........................................................ 1176
Binary and analog connections.................................................... 1176
Communication connections........................................................ 1176
Ethernet RJ-45 front connection..............................................1177
Ethernet rear connections....................................................... 1177
EIA-232 serial rear connection................................................ 1178
EIA-485 serial rear connection................................................ 1178
Optical ST serial rear connection............................................ 1178
Communication interfaces and protocols................................ 1179
Rear communication modules................................................. 1179
COM0001-COM0014 jumper locations and connections .. 1183
COM0023 jumper locations and connections ....................1186
COM0032-COM0034 jumper locations and connections... 1191
Section 14 Technical data............................................................ 1195
Section 15 IED and functionality tests..........................................1203
Section 16 Applicable standards and regulations........................ 1207
Section 17 Glossary..................................................................... 1209
620 series
Technical Manual