Siemens siprotec 7SA6 User Manual page 787

K
Keys ....................................................... 4-7
L
Light-Emitting Diodes ............................. 7-2
Limit Value / Set Point Monitoring ...... 6-287
Limit Values ....................................... 6-289
Line Energization onto a Dead Fault ... 6-49
Load Area ............................................ 6-50
Load Current Š 10 % IN ............. 8-48, 8-49
Logical Combination Earthed Systems 6-29
Low Current Monitor ............................ 5-43
M
Maintenance .......................................... 9-4
Manual Overwriting .............................. 7-50
Manual Close........................................6-269
Measured Value Acquisition
Currents ....................................... 6-255
Voltages ...................................... 6-255
Measures
to Be Taken in Case of Power Swings
......................................... 6-71
Measures for Weak and Zero Infeed ... 6-95
Measures for Weak or Zero Infeed .... 6-129
Mechanical Stress Tests ...................... 10-9
Memory Modules ............................... 6-254
Messages and Measured Values
Storage of Data for Fault Recordings
........................................... 1-6
Metered Values .................................... 5-22
Method of Operation ............................ 6-28
Microcomputer System .......................... 1-3
Min/Max Values and Average Values 6-287
Minimum, Maximum and Average Values
.................................................... 6-288
Mixed Lines Overhead Line /Cable .... 6-169
MODBUS ASCII/RTU .......................... 4-32
Mode of
Earth Impedance
(Residual) Compensation .............. 6-11
Monitoring Functions ......................... 6-254
of the External Instrument
Transformer Circuits .................... 6-256
Monitoring Functions ............... 1-12, 10-37
Monitoring of Feedback Information .. 6-300
Monitoring the Command Execution .. 6-297
Monitoring with
One Binary Input ......................... 6-261
Two Binary Inputs ........................ 6-260
Mounting and Connections .................... 8-2
Mounting Rail for 19"-Racks .................. A-9
7SA6 Manual
C53000-G1176-C133-1
Multiple Reclosure .............................. 6-174
Mutual Impedance Matching .............. 10-12
N
Negative Sequence Current 3I2 ........... 6-29
Neutral Displacement Voltage 3 U0 ..... 6-29
Nominal Currents ................................. 8-13
Numerical Values (including •) ....... 6-3, 6-5
O
Operating
Messages from the Timing System 5-58
Operating Interface .............................. 10-5
Operating Interface ................................ 1-6
Operating modes of the
automatic reclosure circuit ........... 6-170
Operating Panel with Four-Line Display . 4-6
Operating Polygons .............................. 6-54
Operating Serial Interface ...................... 4-7
Operating Software DIGSI® 4 .............. A-10
Operation Using DIGSI® 4 ..................... 3-8
Operation Using the Operator Control Panel
.......................................................... 3-5
Operations .............................................. 4-5
Operator
Control Panel ................................... 3-5
Optical Communication Interfaces
.................................... 2-18, 2-29, 2-43
Optical Fibres ....................................... 8-37
Ordering Information and Accesories ..... A-2
Ordering Information and Accessories ... A-2
Ordering Number ................................... 3-3
Oscillographic Fault Records ................. 4-5
Output Indication (OUT) ....................... 5-18
Overall Fault Detection Logic of the Device
...................................................... 6-273
Overall Operation ................................... 1-2
Overall Tripping Logic of the Device .. 6-275
Overcurrent Pickup .............................. 6-31
Overcurrent Protection ....................... 10-25
Information Overview ................... 6-154
Settings ........................................ 6-153
Overreach schemes ........................... 10-15
Overvoltage Phase–Earth ...... 6-207, 6-214
Overvoltage Phase–Phase ................ 6-214
Overvoltage Protection ........... 6-207, 10-31
Overvoltage Zero Sequence System . 6-215
P
Panel Flush Mounting ............................ 8-2
Panel Surface Mounting ......................... 8-7
Parallel Line Mutual Impedance ........... 6-20
Index
Index-v