Siemens SIPROTEC 4 User manual

SIPROTEC 4
Voltage and Frequency
Protection 7RW80
V4.6
Manual
C53000-G1140-C233-4
Preface
Table of Contents
Introduction 1
Functions 2
Mounting and Commissioning 3
Technical Data 4
Ordering Information and Accessories A
Terminal Assignments B
Connection Examples C
Default Settings and Protocol-dependent
Functions D
Functions, Settings, Information E
Literature
Glossary
Index

i
i
NOTE
For your own safety, observe the warnings and safety instructions contained in this document, if available.
Disclaimer of Liability
We have checked the contents of this manual against the
hardware and software described. However, deviations
from the description cannot be completely ruled out, so
that no liability can be accepted for any errors or omissions
contained in the information given.
The information given in this document is reviewed regu-
larly and any necessary corrections will be included in
subsequent editions. We appreciate any suggested
improvements.
We reserve the right to make technical improvements
without notice.
Document version V04.03.00
Release date 07.2018
Copyright
Copyright © Siemens AG 2018. All rights reserved.
Dissemination or reproduction of this document, or evalua-
tion and communication of its contents, is not authorized
except where expressly permitted. Violations are liable for
damages. All rights reserved, particularly for the purposes
of patent application or trademark registration.
Registered Trademarks
SIPROTEC, SINAUT, SICAM and DIGSI are registered trade-
marks of Siemens AG. Other designations in this manual
might be trademarks whose use by third parties for their
own purposes would infringe the rights of the owner.

Preface
Purpose of the Manual
This manual describes the functions, operation, installation, and commissioning of devices 7RW80. In partic-
ular, one will find:
•Information regarding the configuration of the scope of the device and a description of the device func-
tions and settings → Chapter 2;
•Instructions for Installation and Commissioning → Chapter 3;
•Compilation of the Technical Data → Chapter 4;
•As well as a compilation of the most significant data for advanced users → Appendix.
General information with regard to design, configuration, and operation of SIPROTEC 4 devices are set out in
the SIPROTEC 4 System Description /1/ SIPROTEC 4 System Description.
Target Audience
Protection-system engineers, commissioning engineers, persons entrusted with the setting, testing and main-
tenance of selective protection, automation and control equipment, and operating personnel in electrical
installations and power plants.
Scope
This manual applies to: SIPROTEC 4 Voltage and Frequency Protection 7RW80; Firmware-Version V4.6.
Indication of Conformity
This product complies with the directive of the Council of the European Communities on the
approximation of the laws of the Member States relating to electromagnetic compatibility
(EMC Council Directive 2004/108/EC) and concerning electrical equipment for use within
specified voltage limits (Low-voltage Directive 2006/95 EC).
This conformity is proved by tests conducted by Siemens AG in accordance with the Council
Directive in agreement with the generic standards EN 61000-6-2 and EN 61000-6-4 for EMC
directive, and with the standard EN 60255-27 for the low-voltage directive.
The device has been designed and produced for industrial use.
The product conforms with the international standards of the series IEC 60255 and the
German standard VDE 0435.
Additional Standards IEEE Std C37.90 (see Chapter 4 "Technical Data")
This product is UL-certified according to the Technical Data. file E194016
[ul-schutz-7sx80-100310, 1, --_--]
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Additional Support
For questions about the system, please contact your Siemens sales partner.
Support
Our Customer Support Center provides a 24-hour service.
Phone: [phone]
Fax: [phone]
E-Mail: [email protected]
Training Courses
Inquiries regarding individual training courses should be addressed to our Training Center:
Siemens AG
Siemens Power Academy TD
Humboldtstraße 59
90459 Nürnberg
Germany
Phone: [phone]
Fax: [phone]
E-Mail: [email protected]
Internet: www.siemens.com/poweracademy
Notes on Safety
This document is not a complete index of all safety measures required for operation of the equipment (module
or device). However, it comprises important information that must be followed for personal safety, as well as
to avoid material damage. Information is highlighted and illustrated as follows according to the degree of
danger:
!
DANGER
DANGER means that death or severe injury will result if the measures specified are not taken.
²Comply with all instructions, in order to avoid death or severe injuries.
!
WARNING
WARNING means that death or severe injury may result if the measures specified are not taken.
²Comply with all instructions, in order to avoid death or severe injuries.
!
CAUTION
CAUTION means that medium-severe or slight injuries can occur if the specified measures are not taken.
²Comply with all instructions, in order to avoid moderate or minor injuries.
Preface
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NOTICE
NOTICE means that property damage can result if the measures specified are not taken.
²Comply with all instructions, in order to avoid property damage.
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NOTE
Important information about the product, product handling or a certain section of the documentation
which must be given particular attention.
Qualified Electrical Engineering Personnel
Only qualified electrical engineering personnel may commission and operate the equipment (module, device)
described in this document. Qualified electrical engineering personnel in the sense of this manual are people
who can demonstrate technical qualifications as electrical technicians. These persons may commission,
isolate, ground and label devices, systems and circuits according to the standards of safety engineering.
Proper Use
The equipment (device, module) may be used only for such applications as set out in the catalogs and the
technical description, and only in combination with third-party equipment recommended and approved by
Siemens.
Problem-free and safe operation of the product depends on the following:
•Proper transport
•Proper storage, setup and installation
•Proper operation and maintenance
When electrical equipment is operated, hazardous voltages are inevitably present in certain parts. If proper
action is not taken, death, severe injury or property damage can result:
•The equipment must be grounded at the grounding terminal before any connections are made.
•All circuit components connected to the power supply may be subject to dangerous voltage.
•Hazardous voltages may be present in equipment even after the supply voltage has been disconnected
(capacitors can still be charged).
•Operation of equipment with exposed current-transformer circuits is prohibited. Before disconnecting the
equipment, ensure that the current-transformer circuits are short-circuited.
•The limiting values stated in the document must not be exceeded. This must also be considered during
testing and commissioning.
Typographic and Symbol Conventions
The following text formats are used when literal information from the device or to the device appear in the
text flow:
Parameter Names
Designators of configuration or function parameters which may appear word-for-word in the display of the
device or on the screen of a personal computer (with operation software DIGSI), are marked in bold letters in
monospace type style. The same applies to titles of menus.
1234A
Parameter addresses have the same character style as parameter names. Parameter addresses contain the
suffix A in the overview tables if the parameter can only be set in DIGSI via the option Display additional
settings.
Parameter Options
Possible settings of text parameters, which may appear word-for-word in the display of the device or on the
screen of a personal computer (with operation software DIGSI), are additionally written in italics. The same
applies to the options of the menus.
Preface
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Indications
Designators for information, which may be output by the relay or required from other devices or from the
switch gear, are marked in a monospace type style in quotation marks.
Deviations may be permitted in drawings and tables when the type of designator can be obviously derived
from the illustration.
The following symbols are used in drawings:
Device-internal logical input signal
Device-internal logical output signal
Internal input signal of an analog quantity
External binary input signal with number (binary input,
input indication)
External binary output signal with number
(example of a value indication)
External binary output signal with number (device indication) used as
input signal
Example of a parameter switch designated FUNCTION with address
1234 and the possible settings ON and OFF
Besides these, graphical symbols are used in accordance with IEC 60617-12 and IEC 60617-13 or similar.
Some of the most frequently used are listed below:
Analog input variable
AND-gate operation of input values
OR-gate operation of input values
Exclusive OR gate (antivalence): output is active, if only one of the
inputs is active
Coincidence gate: output is active, if both inputs are active or inactive
at the same time
Dynamic inputs (edge-triggered) above with positive, below with
negative edge
Formation of one analog output signal from a number of analog input
signals
Limit stage with setting address and parameter designator (name)
Timer (pickup delay T, example adjustable) with setting address and
parameter designator (name)
Preface
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Timer (dropout delay T, example non-adjustable)
Dynamic triggered pulse timer T (monoflop)
Static memory (SR flipflop) with setting input (S), resetting input (R),
output (Q) and inverted output (Q), setting input dominant
Static memory (RS-flipflop) with setting input (S), resetting input (R),
output (Q) and inverted output (Q), resetting input dominant
Preface
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Table of Contents
Preface..........................................................................................................................................................3
1 Introduction................................................................................................................................................15
1.1 Overall Operation..............................................................................................................16
1.2 Application Scope............................................................................................................. 18
1.3 Characteristics.................................................................................................................. 20
2 Functions.................................................................................................................................................... 23
2.1 General.............................................................................................................................24
2.1.1 Functional Scope......................................................................................................... 24
2.1.1.1 Functional Description........................................................................................... 24
2.1.1.2 Setting Notes......................................................................................................... 24
2.1.1.3 Settings................................................................................................................. 25
2.1.2 Device, General Settings.............................................................................................. 26
2.1.2.1 Functional Description........................................................................................... 26
2.1.2.2 Setting Notes......................................................................................................... 27
2.1.2.3 Settings................................................................................................................. 27
2.1.2.4 Information List..................................................................................................... 27
2.1.3 Power System Data 1...................................................................................................28
2.1.3.1 Functional Description........................................................................................... 28
2.1.3.2 Setting Notes......................................................................................................... 29
2.1.3.3 Settings................................................................................................................. 31
2.1.3.4 Information List..................................................................................................... 32
2.1.4 Oscillographic Fault Records........................................................................................ 32
2.1.4.1 Functional Description........................................................................................... 32
2.1.4.2 Setting Notes......................................................................................................... 33
2.1.4.3 Settings................................................................................................................. 34
2.1.4.4 Information List..................................................................................................... 34
2.1.5 Settings Groups........................................................................................................... 34
2.1.5.1 Functional Description........................................................................................... 34
2.1.5.2 Setting Notes......................................................................................................... 34
2.1.5.3 Settings................................................................................................................. 35
2.1.5.4 Information List..................................................................................................... 35
2.1.6 Power System Data 2...................................................................................................35
2.1.6.1 Functional Description........................................................................................... 35
2.1.6.2 Setting Notes......................................................................................................... 35
2.1.6.3 Settings................................................................................................................. 35
2.1.6.4 Information List..................................................................................................... 35
2.1.7 EN100-Module............................................................................................................ 36
2.1.7.1 Functional Description........................................................................................... 36
2.1.7.2 Setting Notes......................................................................................................... 36
2.1.7.3 Information List..................................................................................................... 36
2.2 Voltage Protection 27, 59..................................................................................................37
2.2.1 Measurement Principle................................................................................................ 37
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2.2.2 Overvoltage Protection 59........................................................................................... 38
2.2.3 Undervoltage Protection 27......................................................................................... 39
2.2.4 Setting Notes...............................................................................................................41
2.2.5 Settings.......................................................................................................................44
2.2.6 Information List...........................................................................................................45
2.3 Frequency Protection 81 O/U.............................................................................................46
2.3.1 Functional Description.................................................................................................46
2.3.2 Setting Notes...............................................................................................................47
2.3.3 Settings.......................................................................................................................48
2.3.4 Information List...........................................................................................................49
2.4 Load Restoration............................................................................................................... 50
2.4.1 Functional Description.................................................................................................50
2.4.2 Setting Notes...............................................................................................................54
2.4.3 Settings.......................................................................................................................57
2.4.4 Information List...........................................................................................................60
2.5 Supervision Functions....................................................................................................... 61
2.5.1 Measurement Supervision........................................................................................... 61
2.5.1.1 General..................................................................................................................61
2.5.1.2 Hardware Monitoring ............................................................................................ 61
2.5.1.3 Software Monitoring ............................................................................................. 61
2.5.1.4 Monitoring of the Transformer Circuits................................................................... 62
2.5.1.5 Broken Wire Monitoring of Voltage Transformer Circuits......................................... 63
2.5.1.6 Setting Notes......................................................................................................... 64
2.5.1.7 Settings................................................................................................................. 64
2.5.1.8 Information List..................................................................................................... 65
2.5.2 Trip Circuit Supervision 74TC....................................................................................... 65
2.5.2.1 Functional Description........................................................................................... 65
2.5.2.2 Setting Notes......................................................................................................... 68
2.5.2.3 Settings................................................................................................................. 68
2.5.2.4 Information List..................................................................................................... 69
2.5.3 Malfunction Responses of the Monitoring Functions.................................................... 69
2.5.3.1 Functional Description........................................................................................... 69
2.6 Flexible Protection Functions.............................................................................................71
2.6.1 Functional Description.................................................................................................71
2.6.2 Setting Notes...............................................................................................................74
2.6.3 Settings.......................................................................................................................77
2.6.4 Information List...........................................................................................................78
2.7 Synchrocheck................................................................................................................... 80
2.7.1 Allgemeines................................................................................................................ 80
2.7.2 Functional Sequence................................................................................................... 81
2.7.3 De-energized Switching...............................................................................................82
2.7.4 Direct Command / Blocking..........................................................................................83
2.7.5 Interaction with Control and External Control...............................................................84
2.7.6 Setting Notes...............................................................................................................84
2.7.7 Settings.......................................................................................................................88
2.7.8 Information List...........................................................................................................89
2.8 24 Overexcit. Protection (Volt/Hertz)................................................................................. 91
2.8.1 Functional Description.................................................................................................91
2.8.2 Setting Notes...............................................................................................................93
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2.8.3 Settings.......................................................................................................................95
2.8.4 Information List...........................................................................................................95
2.9 Jump of Voltage Vector..................................................................................................... 96
2.9.1 Functional Description.................................................................................................96
2.9.2 Setting Notes...............................................................................................................98
2.9.3 Settings.......................................................................................................................99
2.9.4 Information List...........................................................................................................99
2.10 Phase Rotation................................................................................................................ 100
2.10.1 Functional Description...............................................................................................100
2.10.2 Setting Notes.............................................................................................................100
2.11 Function Logic................................................................................................................ 101
2.11.1 Pickup Logic of the Entire Device................................................................................101
2.11.2 Tripping Logic of the Entire Device.............................................................................101
2.11.3 Setting Notes.............................................................................................................102
2.12 Auxiliary Functions..........................................................................................................103
2.12.1 Message Processing...................................................................................................103
2.12.1.1 LED Displays and Binary Outputs (Output Relays)..................................................103
2.12.1.2 Information on the Integrated Display (LCD) or Personal Computer....................... 103
2.12.1.3 Information to a Control Center............................................................................105
2.12.2 Statistics....................................................................................................................105
2.12.2.1 Functional Description......................................................................................... 105
2.12.2.2 Setting Notes....................................................................................................... 105
2.12.2.3 Information List................................................................................................... 105
2.12.3 Measurement............................................................................................................105
2.12.3.1 Display of Measured Values.................................................................................. 106
2.12.3.2 Transfer of Measured Values................................................................................ 107
2.12.3.3 Information List................................................................................................... 107
2.12.4 Min/Max Measurement Setup.................................................................................... 108
2.12.4.1 Functional Description......................................................................................... 108
2.12.4.2 Setting Notes....................................................................................................... 108
2.12.4.3 Settings............................................................................................................... 108
2.12.4.4 Information List................................................................................................... 108
2.12.5 Set Points for Measured Values.................................................................................. 109
2.12.5.1 Setting Notes....................................................................................................... 109
2.12.6 Set Points for Statistic................................................................................................ 109
2.12.6.1 Functional Description......................................................................................... 109
2.12.6.2 Setting Notes....................................................................................................... 109
2.12.6.3 Information List................................................................................................... 110
2.12.7 Energy Metering........................................................................................................110
2.12.7.1 Setting Notes....................................................................................................... 110
2.12.7.2 Settings............................................................................................................... 110
2.12.7.3 Information List................................................................................................... 110
2.12.8 Commissioning Aids.................................................................................................. 110
2.12.8.1 Functional Description......................................................................................... 110
2.13 Breaker Control...............................................................................................................112
2.13.1 Control Device...........................................................................................................112
2.13.1.1 Functional Description......................................................................................... 112
2.13.1.2 Informationsübersicht..........................................................................................113
2.13.2 Types of Commands.................................................................................................. 113
2.13.2.1 Functional Description......................................................................................... 113
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2.13.3 Command Sequence..................................................................................................113
2.13.3.1 Functional Description......................................................................................... 114
2.13.4 Switchgear Interlocking............................................................................................. 114
2.13.4.1 Functional Description......................................................................................... 114
2.13.5 Command Logging.................................................................................................... 118
2.13.5.1 Functional Description......................................................................................... 119
2.14 Notes on Device Operation..............................................................................................120
2.14.1 Different operation....................................................................................................120
3 Mounting and Commissioning................................................................................................................. 123
3.1 Mounting and Connections............................................................................................. 124
3.1.1 Configuration Information......................................................................................... 124
3.1.2 Hardware Modifications.............................................................................................127
3.1.2.1 Disassembly.........................................................................................................127
3.1.2.2 Connections of the Voltage Terminals...................................................................131
3.1.2.3 Interface Modules................................................................................................ 132
3.1.2.4 Reassembly..........................................................................................................134
3.1.3 Installation................................................................................................................ 135
3.1.3.1 General................................................................................................................135
3.1.3.2 Panel Flush Mounting...........................................................................................136
3.1.3.3 Cubicle Mounting.................................................................................................137
3.1.3.4 Panel Surface Mounting....................................................................................... 138
3.2 Checking Connections.....................................................................................................140
3.2.1 Checking the Data Connections of the Interfaces........................................................140
3.2.2 Checking the System Connections............................................................................. 142
3.3 Commissioning............................................................................................................... 144
3.3.1 Test Mode and Transmission Block.............................................................................145
3.3.2 Testing the System Interface .....................................................................................145
3.3.3 Configuring Communication Modules........................................................................146
3.3.4 Checking the Status of Binary Inputs and Outputs...................................................... 150
3.3.5 Testing User-Defined Functions..................................................................................152
3.3.6 Voltage and Phase Rotation Testing........................................................................... 152
3.3.7 Polarity Check for Voltage Input V3.............................................................................153
3.3.8 Trip/Close Tests for the Configured Operating Devices................................................ 155
3.3.9 Creating Oscillographic Recordings for Tests.............................................................. 156
3.4 Final Preparation of the Device........................................................................................157
4 Technical Data.......................................................................................................................................... 159
4.1 General Device Data........................................................................................................160
4.1.1 Analog Inputs............................................................................................................160
4.1.2 Auxiliary voltage........................................................................................................160
4.1.3 Binary Inputs and Outputs......................................................................................... 160
4.1.4 Communication Interfaces.........................................................................................161
4.1.5 Electrical Tests...........................................................................................................164
4.1.6 Mechanical Tests....................................................................................................... 165
4.1.7 Climatic Stress Tests.................................................................................................. 166
4.1.8 Service Conditions..................................................................................................... 167
4.1.9 Constructive Design...................................................................................................167
4.1.10 UL certification conditions......................................................................................... 167
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4.2 Voltage Protection.......................................................................................................... 169
4.3 Frequency Protection 81 O/U...........................................................................................171
4.4 Load Restoration............................................................................................................. 172
4.5 Flexible Protection Functions ..........................................................................................173
4.6 Synchrocheck 25 ............................................................................................................175
4.7 Overecxitation Protection 24...........................................................................................177
4.8 Jump of Voltage Vector................................................................................................... 179
4.9 User-defined Functions (CFC).......................................................................................... 180
4.10 Auxiliary Functions..........................................................................................................185
4.11 Switching Device Control................................................................................................ 188
4.12 Dimensions.....................................................................................................................189
4.12.1 Panel Flush and Cubicle Mounting (Housing Size 1/6) ................................................189
4.12.2 Panel Surface Mounting (Housing Size 1/6) ............................................................... 190
4.12.3 Bottom view..............................................................................................................190
A Ordering Information and Accessories.....................................................................................................191
A.1 Ordering Information 7RW80 V4.6 ................................................................................. 192
A.2 Accessories..................................................................................................................... 195
B Terminal Assignments..............................................................................................................................197
B.1 7RW80 — Housing for Panel Flush Mounting or Cubicle Mounting...................................198
B.2 7RW80 — Housing for panel surface mounting................................................................199
C Connection Examples............................................................................................................................... 201
C.1 Connection Examples for Voltage Transformers...............................................................202
D Default Settings and Protocol-dependent Functions............................................................................... 207
D.1 LEDs............................................................................................................................... 208
D.2 Binary Input.................................................................................................................... 209
D.3 Binary Output................................................................................................................. 210
D.4 Function Keys................................................................................................................. 211
D.5 Default Display................................................................................................................212
D.6 Protocol-dependent Functions.........................................................................................213
E Functions, Settings, Information..............................................................................................................215
E.1 Functional Scope............................................................................................................ 216
E.2 Settings.......................................................................................................................... 217
E.3 Information List.............................................................................................................. 226
E.4 Group Indications............................................................................................................246
E.5 Measured Values.............................................................................................................247
Literature.................................................................................................................................................. 249
Glossary.................................................................................................................................................... 251
Index.........................................................................................................................................................261
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Introduction
The device family SIPROTEC 7RW80 devices is introduced in this section. An overview of the devices is
presented in their application, characteristics, and scope of functions.
1.1 Overall Operation 16
1.2 Application Scope 18
1.3 Characteristics 20
1
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Overall Operation
The Voltage and Frequency protection SIPROTEC 7RW80 is equipped with a high performance microprocessor.
This provides numerical processing of all functions in the device, from the acquisition of the measured values
up to the output of commands to the circuit breakers. Figure 1-1 shows the basic structure of the device
7RW80.
Analog Inputs
The measuring inputs MI transform the voltages derived from the instrument transformers and match them to
the internal signal levels for processing in the device. Three voltage inputs are available in the MI section.
[hw-struktur-7rw80-100519, 1, en_US]
Figure 1-1 Hardware structure of the numerical Voltage and Frequency Protection Device 7RW80
Voltage inputs can either be used to measure the three phase-to-ground voltages, or two phase-to-phase
voltages and the displacement voltage (e–n voltage) or for any other voltage. It is also possible to connect two
phase-to-phase voltages in open-delta connection.
The analog input quantities are passed on to the input amplifiers (IA). The input amplifier IA element provides
a high-resistance termination for the input quantities. It consists of filters that are optimized for measured-
value processing with regard to bandwidth and processing speed.
The analog-to-digital (AD) transformer group consists of a an analog-to-digital converter and memory compo-
nents for the transmission of data to the microcomputer.
Microcomputer System
Apart from processing the measured values, the microcomputer system (μC) also executes the actual protec-
tion and control functions. They especially include:
1.1
Introduction
1.1 Overall Operation
16 SIPROTEC 4, 7RW80, Manual
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•Filtering and preparation of the measured quantities
•Continuous monitoring of the measured quantities
•Monitoring of the pickup conditions for the individual protective functions
•Interrogation of limit values and sequences in time
•Control of signals for the logic functions
•Output of control commands for switching devices
•Recording of messages, fault data and fault values for analysis
•Management of the operating system and the associated functions such as data recording, real-time
clock, communication, interfaces, etc.
•The information is distributed via output amplifiers (OA).
Binary Inputs and Outputs
The computer system obtains external information through the binary input/output boards (inputs and
outputs). The computer system obtains information from the system (e.g remote resetting) or from external
equipment (e.g. blocking commands). These outputs include, in particular, trip commands to circuit breakers
and signals for the remote indication of important events and conditions.
Front Panel
Information such as messages related to events, states, measured values and the functional status of the
device are visualized by light-emitting diodes (LEDs) and a display screen (LCD) on the front panel.
Integrated control and numeric keys in conjunction with the LCD enable interaction with the remote device.
These elements can be used to access the device for information such as configuration and setting parame-
ters. Similarly, setting parameters can be accessed and changed if needed.
In addition, control of circuit breakers and other equipment is possible from the front panel of the device.
Interfaces
Communication with a PC can be implemented via the USB DIGSI interface using the DIGSI software, allowing
all device functions to be easily executed.
Communication with a PC is also possible via port A (Ethernet interface) and port B (System/Service interface)
using DIGSI.
In addition to the device communication via DIGSI, port B can also be used to transmit all device data to a
central evaluator or a control center. This interface may be provided with various protocols and physical trans-
mission schemes to suit the particular application.
Power Supply
A power supply unit (Vaux or PS) delivers power to the functional units using the different voltage levels.
Voltage dips may occur if the voltage supply system (substation battery) becomes short-circuited. Usually,
they are bridged by a capacitor (see also Technical Data).
A buffer battery is located under the flap at the lower end of the front cover.
Introduction
1.1 Overall Operation
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Application Scope
The digital voltage and frequency protection SIPROTEC 4 7RW80 is a versatile device designed for protection,
control, and monitoring of transformers, electrical machines and distribution systems.
The device can be used for
•System decoupling or for load shedding if ever there is a risk of a system collapse as a result of inadmis-
sibly large frequency drops
•Monitoring voltage and frequency thresholds
Voltage, frequency and overexcitation protection can be used to protect generators and transformers in the
event of
•Defective voltage control or defective frequency control
•Full load rejection
•Islanding generation systems.
Protection Functions
Multilevel voltage and frequency protection is the basic function of the device.
Further protection functions included are load restoration, synchrocheck, overexcitation protection, vector
jump and flexible protective functions.
Control Functions
The device provides a control function which can be accomplished for activating and deactivating the switch-
gear via operator buttons, port B, binary inputs and - using a PC and the DIGSI software - via the front inter-
face.
The status of the primary equipment can be transmitted to the device via auxiliary contacts connected to
binary inputs. The present status (or position) of the primary equipment can be displayed on the device, and
used for interlocking or alarm condition monitoring. The number of operating equipments to be switched is
limited by the binary inputs and outputs available in the device or the binary inputs and outputs allocated for
the switch position indications. Depending on the primary equipment being controlled, one binary input
(single point indication) or two binary inputs (double point indication) may be used for this process.
The capability of switching primary equipment can be restricted by a setting associated with switching
authority (Remote or Local), and by the operating mode (interlocked/non-interlocked, with or without pass-
word request).
Processing of interlocking conditions for switching (e.g. switchgear interlocking) can be established with the
aid of integrated, user-configurable logic functions.
Messages and Measured Values; Recording of Event and Fault Data
The operational indications provide information about conditions in the power system and the device. Meas-
urement quantities and values that are calculated can be displayed locally and communicated via the serial
interfaces.
Device messages can be assigned to a number of LEDs on the front cover (allocatable), can be externally
processed via output contacts (allocatable), linked with user-definable logic functions and/or issued via serial
interfaces.
During a fault (system fault) important events and changes in conditions are saved in fault protocols (Event
Log or Trip Log). Instantaneous fault values are also saved in the device and may be analyzed subsequently.
Communication
The following interfaces are available for communication with external operating, control and memory
systems.
The USB DIGSI interface on the front cover serves for local communication with a PC. By means of the
SIPROTEC 4 operating software DIGSI, all operational and evaluation tasks can be executed via this operator
interface, such as specifying and modifying configuration parameters and settings, configuring user-specific
1.2
Introduction
1.2 Application Scope
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logic functions, retrieving operational messages and measured values, inquiring device conditions and meas-
ured values, issuing control commands.
Depending on the ordered variant, additional interfaces are located at the bottom of the device. They serve for
establishing extensive communication with other digital operating, control and memory components:
Port A serves for DIGSI communication directly on the device or via network.
Port B serves for central communication between the device and a control center. It can be operated via data
lines or fiber optic cables. For the data transfer, there are standard protocols in accordance with IEC 60870-5-
103 available. The integration of the devices into the SINAUT LSA and SICAM automation systems can also be
implemented with this profile.
Alternatively, additional connection options are available with PROFIBUS DP and the DNP3.0 and MODBUS
protocols. If an EN100 module is available, you can use the protocol IEC 61850.
Introduction
1.2 Application Scope
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Characteristics
General Characteristics
•Powerful 32-bit microprocessor system
•Complete digital processing and control of measured values, from the sampling of the analog input quan-
tities to the initiation of outputs, for example, tripping or closing circuit breakers or other switchgear
devices
•Total electrical separation between the internal processing stages of the device and the external trans-
former, control, and DC supply circuits of the system because of the design of the binary inputs, outputs,
and the DC or AC converters
•Easy device operation through an integrated operator panel or by means of a connected personal
computer running DIGSI
•Continuous calculation and display of measured and metered values on the front of the device
•Storage of min./max. measured values (slave pointer function) and storage of long-term mean values
•Recording of event and fault data for the last 8 system faults (fault in a network) with real-time informa-
tion as well as instantaneous values for fault recording for a maximum time range of 20 s
•Constant monitoring of the measured quantities, as well as continuous self-diagnostics covering the
hardware and software
•Communication with SCADA or substation controller equipment via serial interfaces through the choice
of data cable, modem, or optical fibers
•Battery-buffered clock which can be synchronized via a synchronization signal at the binary input or via a
protocol
•Statistics: Recording of the number of trip signals instigated by the device.
•Commissioning aids such as connection and direction check, status indication of all binary inputs and
outputs, easy testing of port B, and influencing of information at port B during test operation.
Voltage Protection 27, 59
•Three-element undervoltage detection via the positive sequence system of the voltages, phase-to-phase
or phase-ground voltages
•Separate overvoltage detection of the voltages applied or detection of the positive or negative sequence
component of the voltages
•Settable dropout ratio for all elements of the undervoltage and overvoltage protection
•User-defined characteristic
Frequency Protection 81 O/U
•Monitoring of falling below (f<) and/or exceeding (f>) with 4 frequency limits and time delays that are
independently adjustable
•Insensitive to harmonics and abrupt phase angle changes
•Adjustable undervoltage threshold.
Load Restoration
•4 separately adjustable load restoration stages
•Individually assignable low frequency stages, which start the load restoration stage (1 to 4 for each load
restoration element)
•Settable dropout ratio for all stages of the load restoration
•Monitoring of the settable restoration cycles (no ON/OFF chattering)
1.3
Introduction
1.3 Characteristics
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