Siemens SIPROTEC 7SS52

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Contents7
Introduction17
Chapter Index17
Data for Selection and Ordering18
Product Description21
Application21
Features22
Scope of Functions22
Busbar Protection22
Circuit-Breaker Failure Protection23
Isolator Replica24
Trip Output/Reset25
Fault Recording25
Binary Inputs, Trip Outputs, Re-Assignable Alarm Relays and Led's25
Measuring and Testing Functions25
Operational and Fault Events26
Self-Monitoring26
Versions26
Bay Units26
Master Unit27
Design28
Fitting of the Modules29
Device Connections30
Dimensions31
Bay Unit31
Technical Data37
General Device Data37
Standards and Guidelines39
Electrical Tests39
Service Conditions41
Inter-Change Ability41
General Data42
Ancillary Functions43
Mode of Operation45
Operation of Complete Unit45
Application Functions47
Basic Principle48
Stabilization49
Separate Evaluation of Half-Cycles51
Weighted Evaluation of the Initial Values53
Response Threshold, Pick up54
Summary of the Measuring Method54
Special Treatment of the Stabilizing Current for the Check Zone56
Isolator MIMIC57
Processing of the Isolator Running Status57
Preferential Treatment During Busbar Coupling Via Isolators57
Isolator Treatment During Auxiliary Voltage Supply Failure57
Treatment of the Isolator States in the Event of Wire Breakage58
Bypass Transfer-Busbar Operation58
Feeder and Bus Coupler on Different Busbars59
Feeder and Bus Coupler on the same Busbar Section60
Status of the Feeder Isolator61
TRIP Repetition with Current Sensor63
Unbalancing64
Pulse Mode67
Initiation by External Breaker Failure Protection68
Circuit-Breaker Failure Protection for Busbar Faults68
Overcurrent Controlled Trip Command70
Feeder-Selective Trip Release70
Bay out of Service74
Event Logging75
Operation and Indication75
Alarm Relays and Indications75
Harware Monitoring76
Monitoring Functions76
Software Monitoring77
Isolator Supervision79
Current-Controlled Reset of the TRIP Command80
Cycle Test81
Installation Instructions83
Unpacking and Repacking83
Preparations83
Connection of the Bay Units in the Bus Coupler Bay84
Installation and Connection84
Version for Panel Surface Mounting (FE, ZE)84
Subrack Version of the Master Unit85
Bay Unit for Panel or Cubicle Flush Mounting85
Cubicle Version of the Master Unit85
Check of the Nominal Data86
Matching of the Control Voltage for the Binary Inputs86
Coding of the ZPS Modules89
Checking the Connections90
Configuring Examples91
Marshalling Possibilities94
Operating Instructions95
Setting the Master Unit95
Integrated Keypad/Display Panel95
Operating Pre-Requisites96
Communication Software DIGSI96
Setting the Protection97
Initial Displays - Blocks 00 and 0198
Station Lay-Out Data98
Reading out of Design Data98
Changing of Station Data98
Common Data Station Configuration - Block 54102
Configuration of the Busbar - Block 49103
System Data104
Settings106
Settings for the Busbar Differential Protection106
Settings for the Pick-Up Characteristics - Block 61106
Settings for the Differential Current Supervision - Block 63108
Settings for the Supervisory Functions - Block 63111
Settings for Breaker Failure Protection Supervision111
Settings for Isolator Supervision112
Settings for Linearized Current Transformers112
Operational Control Features114
Binary Inputs114
Taking Bays out of Service - Block 64115
Test and Control Functions115
Alarms118
Marshalling of Binary Outputs and LED-Indications119
Operational Event Recording - Block 71122
Fault Events - Block 72126
Operating the Bay Unit127
Keypad/Display127
Prerequisite and Language for Operation128
Device Settings130
Setting Via the Integrated Operation - Block 71130
Marshalling of Binary Inputs, Binary Outputs and LED Indications131
Marshalling of the Binary Inputs - Block 61131
Marshalling of the Alarm Relay - Block 62134
Marshalling of the LED Indications - Block 63135
Marshalling of the Command Relays - Block 64137
Test and Control Function - Block 40139
Read out of Operational Measured Values - Block 57140
Testing and Comissioning142
General142
Test Set-Up143
Bus-Zone Specific Protection143
Check Zone145
Comissioning with Primary Values153
Checking the Alarms and Trip Signals154
Switching the Protection into Service154
Maintenance155
Maintenance Recommendations155
Fault Analysis156
Analysis of Operational Events156
Checking the Auxiliary Voltage Supply157
Replacement of Fuses157
Check of the Leds on the Modules159
Fault Indication and Analysis of the Fault Buffer160
Status Events162
Analysis of Failures in the Communication ZE-FE164
Repair167
Storage169
Appendix171
Event Records - Block 71 to 76 and 78/ZE - Examples171
Available Operational and Fault Events173
Basis for Selection of the Stabilization Factor K181
Connection Diagrams182
Connection Diagram Bay Unit182
Connection Diagram Master Unit183
Pre-Setting of Binary Inputs and Outputs187
Table of Direct Addresses - Master Unit (Overview)192
System and Configuration Data192
Parameters195
Commands/Tests198
Table of Direct Addresses - Bay Unit (Overview)199
Reference Table for Configuration Parameters - Bay Unit200
Abbreviations202
Index203

Siemens SIPROTEC 7SS52 - Page 6

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