Siemens 7SC80 User manual

SIPROTEC
Feeder Automation
Controller
7SC80
V4.0
Manual
E50417-G1140-C486-A1
Preface
Contents
Introduction 1
Functions 2
Mounting and Commissioning 3
Technical Data 4
Appendix A
Literature
Glossary
Index

Siemens Aktiengesellschaft Order no.: E50417-G1140-C486-A1
Note
For safety purposes, please note instructions and warnings in the Preface.
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 regularly 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 Release 4.00.02
Release date 12.2011
Copyright
Copyright © Siemens AG 2011. All rights reserved.
Dissemination or reproduction of this document, or evaluation and
communication of its contents, is not authorized except where ex-
pressly permitted. Violations are liable for damages. All rights re-
served, particularly for the purposes of patent application or trade-
mark registration.
Registered Trademarks
SIPROTEC, SINAUT, SICAM and DIGSI are registered trademarks
of Siemens AG. Other designations in this manual might be trade-
marks whose use by third parties for their own purposes would in-
fringe the rights of the owner.

SIPROTEC, 7SC80, Manual
E50417-G1140-C486-A1, Release date 12.2011
3
Preface
Purpose of this Manual
This manual describes the functions, operation, installation, and commissioning of 7SC80 devices. In particu-
lar, one will find:
• Information regarding the configuration of the scope of the device and a description of the device functions
and settings oChapter 2;
• Instructions for Installation and Commissioning oChapter 3;
• Compilation of the Technical Data oChapter 4;
• As well as a compilation of the most significant data for advanced users oAppendix A.
General information with regard to design, configuration, and operation of SIPROTEC 4 devices are set out in
the SIPROTEC 4 System Description /1/.
Target Audience
Protection engineers, commissioning engineers, personnel concerned with adjustment, checking, and service
of selective protective equipment, automatic and control facilities, and personnel of electrical facilities and
power plants.
Applicability of this Manual
This manual applies to: SIPROTEC 4 Feeder Automation Controller 7SC80; firmware version V4.0.

Preface
SIPROTEC, 7SC80, Manual
E50417-G1140-C486-A1, Release date 12.2011
4
Additional Support
Should further information on the System SIPROTEC 4 be desired or should particular problems arise which
are not covered sufficiently for the purchaser's purpose, the matter should be referred to the local Siemens rep-
resentative.
Our Customer Support Center provides a 24-hour service.
Telephone: [phone]
Fax: [phone]
e-mail: [email protected]
Training Courses
Enquiries regarding individual training courses should be addressed to our Training Center:
Siemens AG
Siemens Power Academy
Humboldt Street 59
90459 Nuremberg
Telephone: [phone]
Fax: [phone]
Internet: www.siemens.com/energy/power-academy
Email: power-academy[email protected]
Safety Information
This manual does not constitute a complete index of all required safety measures for operation of the equip-
ment (module, device), as special operational conditions may require additional measures. However, it com-
prises important information that should be noted for purposes of personal safety as well as avoiding material
damage. Information that is highlighted by means of a warning triangle and according to the degree of danger,
is illustrated as follows.
DANGER!
Danger indicates that death, severe personal injury or substantial material damage will result if proper precau-
tions are not taken.
Additional Standards IEEE C37.90 (see Chapter 4 "Technical Data")
UL approval according standard UL 508 is pending.

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E50417-G1140-C486-A1, Release date 12.2011 5
WARNING!
indicates that death, severe personal injury or substantial property damage may result if proper precautions are
not taken.
Caution!
indicates that minor personal injury or property damage may result if proper precautions are not taken. This
particularly applies to damage to or within the device itself and consequential damage thereof.
Note
indicates information on the device, handling of the device, or the respective part of the instruction manual
which is important to be noted.
WARNING!
Qualified Personnel
Commissioning and operation of the equipment (module, device) as set out in this manual may only be carried
out by qualified personnel. Qualified personnel in terms of the technical safety information as set out in this
manual are persons who are authorized to commission, activate, to ground and to designate devices, systems
and electrical circuits in accordance with the safety standards.
Use as prescribed
The operational equipment (device, module) may only be used for such applications as set out in the catalog
and the technical description, and only in combination with third-party equipment recommended or approved
by Siemens.
The successful and safe operation of the device is dependent on proper handling, storage, installation, opera-
tion, and maintenance.
When operating an electrical equipment, certain parts of the device are inevitably subject to dangerous voltage.
Severe personal injury or property damage may result if the device is not handled properly.
Before any connections are made, the device must be grounded to the ground terminal.
All circuit components connected to the voltage supply may be subject to dangerous voltage.
Dangerous voltage may be present in the device even after the power supply voltage has been removed (ca-
pacitors can still be charged).
Operational equipment with exposed current transformer circuits may not be operated.
The limit values as specified in this manual or in the operating instructions may not be exceeded. This aspect
must also be observed during testing and commissioning.

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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 goes for the titles of menus.
1234A
Parameter addresses have the same character style as parameter names. Parameter addresses contain the
suffix Ain the overview tables if the parameter can only be set in DIGSI via the option Display additional set-
tings.
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. This also
applies to header bars for selection menus.
„Messages“
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:
Besides these, graphical symbols are used according to IEC 60617-12 and IEC 60617-13 or symbols derived
from these standards. Some of the most frequently used are listed below:
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 input 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

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■
Analog input variable
AND operation of input variables
OR operation of input variables
Exclusive OR (antivalence): output is active if only one of the inputs is
active
Coincidence: output is active if both inputs are active or inactive at the
same time
Dynamic input signals (edge-triggered) above with positive, below with
negative edge
Formation of one analog output signal from a number of analog input
signals
Threshold element with setting address and parameter names
Timer (pickup delay T adjustable) with setting address and parameter
names
Timer (dropout delay T not adjustable)
Edge-triggered time element with action time T
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 resetting input (R) setting input (S),
output (Q) and inverted output (Q), resetting input dominant

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SIPROTEC, 7SC80, Manual
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Contents
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 Functions Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
2.1.1.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
2.1.1.2 Setting Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
2.1.1.3 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
2.1.2 Device, General Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
2.1.2.1 General Device Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
2.1.2.2 Battery Charger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
2.1.2.3 Setting Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
2.1.2.4 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
2.1.2.5 Information List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
2.1.3 Power System Data 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
2.1.3.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
2.1.3.2 Setting Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
2.1.3.3 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
2.1.3.4 Information List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
2.1.4 Oscillographic Fault Records . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
2.1.4.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
2.1.4.2 Setting Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
2.1.4.3 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
2.1.4.4 Information List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
2.1.5 Settings Groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
2.1.5.1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
2.1.5.2 Setting Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
2.1.5.3 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
2.1.5.4 Information List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
2.1.6 Power System Data 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
2.1.6.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
2.1.6.2 Setting Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
2.1.6.3 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
2.1.6.4 Information List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
2.1.7 EN100-Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
2.1.7.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
2.1.7.2 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
2.1.7.3 Information List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

Contents
SIPROTEC, 7SC80, Manual
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2.2 Overcurrent Protection 50, 51, 50N, 51N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
2.2.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
2.2.2 Definite Time, High-set Elements 50-3, 50-2, 50N-3, 50N-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
2.2.3 Definite Time Overcurrent Elements 50-1, 50N-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
2.2.4 Inrush Restraint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
2.2.5 Pickup Logic and Tripping Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
2.2.6 Setting Notes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
2.2.7 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
2.2.8 Information List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
2.3 Directional Overcurrent Protection 67, 67N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
2.3.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
2.3.2 Definite Time, Directional High-set Elements 67-2, 67N-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
2.3.3 Definite Time, Directional Time Overcurrent Elements 67-1, 67N-1 . . . . . . . . . . . . . . . . . . . . . . . . 75
2.3.4 Interaction with Fuse Failure Monitor (FFM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
2.3.5 Inrush Restraint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
2.3.6 Determination of Direction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
2.3.7 Setting Notes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
2.3.8 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
2.3.9 Information List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
2.4 Voltage Protection 27, 59 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
2.4.1 Measurement Principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
2.4.2 Overvoltage Protection 59. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
2.4.3 Undervoltage Protection 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
2.4.4 Setting Notes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
2.4.5 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
2.4.6 Information List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
2.5 27/59 Under/Over Voltage for Vx . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
2.5.1 Function Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
2.5.2 Setting Notes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
2.5.3 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
2.5.4 Information List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
2.6 Negative Sequence Protection 46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
2.6.1 Definite Time Characteristic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
2.6.2 Inverse Time Characteristic 46-TOC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
2.6.3 Setting Notes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
2.6.4 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
2.6.5 Information List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
2.7 Frequency Protection 81 O/U . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
2.7.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
2.7.2 Setting Notes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
2.7.3 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
2.7.4 Information List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

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2.8 Monitoring Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .120
2.8.1 Measurement Supervision . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .120
2.8.1.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .120
2.8.1.2 Hardware Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .120
2.8.1.3 Software Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .122
2.8.1.4 Monitoring of the Transformer Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .123
2.8.1.5 Measurement Voltage Failure Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .125
2.8.1.6 Setting Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .128
2.8.1.7 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .130
2.8.1.8 Information List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .131
2.8.2 Malfunction Responses of Monitoring Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .132
2.8.2.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .132
2.9 Fault Locator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .134
2.9.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .134
2.9.2 Setting Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .135
2.9.3 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .136
2.9.4 Information List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .136
2.10 Breaker Failure Protection 50BF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .137
2.10.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .137
2.10.2 Setting Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .140
2.10.3 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .142
2.10.4 Information List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .142
2.11 Phase Sequence Reversal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .143
2.11.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .143
2.11.2 Setting Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .144
2.12 Flexible Protection Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .145
2.12.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .145
2.12.2 Setting Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .149
2.12.3 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .153
2.12.4 Information List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .155
2.13 Function Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .156
2.13.1 Pickup Logic of the Entire Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .156
2.13.2 Tripping Logic of the Entire Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .156

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2.14 Additional Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
2.14.1 Message Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
2.14.1.1 LEDs and Binary Outputs (Output Relays) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
2.14.1.2 Information via Display Panel or PC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
2.14.1.3 Information to a Substation Control Center . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
2.14.2 Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
2.14.2.1 Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
2.14.2.2 Setting Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
2.14.2.3 Information List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161
2.14.3 Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161
2.14.3.1 Display of Measured Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
2.14.3.2 Transmitting Measured Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
2.14.3.3 Information List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
2.14.4 Average Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
2.14.4.1 Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
2.14.4.2 Setting Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
2.14.4.3 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
2.14.4.4 Information List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
2.14.5 Min/Max Measurement Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
2.14.5.1 Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
2.14.5.2 Setting Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
2.14.5.3 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
2.14.5.4 Information List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
2.14.6 Set Points for Measured Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
2.14.6.1 Setting Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
2.14.7 Set Points for Statistic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
2.14.7.1 Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
2.14.7.2 Setting Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
2.14.7.3 Information List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
2.14.8 Energy Metering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
2.14.8.1 Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
2.14.8.2 Setting Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
2.14.8.3 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
2.14.8.4 Information List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
2.14.9 Commissioning Aids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
2.14.9.1 Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
2.15 Command Processing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
2.15.1 Control Device. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
2.15.1.1 Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
2.15.1.2 Information List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
2.15.2 Command Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
2.15.2.1 Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
2.15.3 Command Sequence. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
2.15.3.1 Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
2.15.4 Switchgear Interlocking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
2.15.4.1 Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
2.15.5 Command Logging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
2.15.5.1 Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
2.16 Device Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
2.16.1 Web Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185

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3 Mounting and Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .197
3.1 Mounting and Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .198
3.1.1 Configuration Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .198
3.1.2 Hardware Modifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .200
3.1.2.1 Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .200
3.1.2.2 Current Terminal Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .204
3.1.2.3 Process Terminal Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .205
3.1.2.4 Interface Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .206
3.1.2.5 Reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .207
3.1.3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .208
3.1.3.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .208
3.2 Checking Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .210
3.2.1 Checking the Data Connections of the Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .210
3.2.2 Checking the System Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .213
3.2.3 Battery Charging Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .215
3.3 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .216
3.3.1 Test Mode and Transmission Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .217
3.3.2 Testing the System Interface (at Port F) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .217
3.3.3 Communication Module Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .219
3.3.4 Checking the Status of Binary Inputs and Outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .220
3.3.5 Tests for Breaker Failure Protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .222
3.3.6 Testing User-Defined Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .224
3.3.7 Current, Voltage, and Phase Rotation Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .224
3.3.8 Testing the Reverse Interlocking Scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .225
3.3.9 Direction Check with Load Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .226
3.3.10 Polarity Check for Current Input IN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .227
3.3.11 Switching Test for Configured Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .229
3.3.12 Creating A Test Fault Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .230
3.4 Final Preparation of the Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .231
4 Technical Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .233
4.1 General Device Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .234
4.1.1 Analog Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .234
4.1.2 Auxiliary Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .234
4.1.3 Binary Inputs and Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .235
4.1.4 Communication Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .236
4.1.5 Electrical Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .237
4.1.6 Mechanical Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .239
4.1.7 Climatic Stress Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .240
4.1.8 Service Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .240
4.1.9 Constructive Design. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .241
4.1.10 UL certification conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .241
4.2 Definite-time overcurrent protection 50, 50N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .242
4.3 Directional Overcurrent Protection 67, 67N. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .244
4.4 Inrush Restraint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .246
4.5 Voltage Protection 27, 59. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .247

Contents
SIPROTEC, 7SC80, Manual
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4.6 Voltage Protection for Vx. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249
4.7 Negative Sequence Protection 46-1, 46-2 (Definite Time Characteristic). . . . . . . . . . . . . . . . . . . . . . 250
4.8 Negative Sequence Protection 46-TOC (Inverse Time Characteristic). . . . . . . . . . . . . . . . . . . . . . . . 251
4.9 Frequency Protection 81 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 257
4.10 Fault Locator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258
4.11 Breaker Failure Protection 50BF. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259
4.12 Flexible Protection Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260
4.13 User-defined Functions (CFC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263
4.14 Additional Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269
4.15 Switching Device Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273
4.16 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274
4.16.1 Feeder Automation Controller 7SC80 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274
A Appendix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275
A.1 Ordering Information and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276
A.1.1 Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276
A.1.1.1 7SC80 V4.6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276
A.1.2 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278
A.2 Terminal Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 279
A.2.1 7SC80 — Housing for cabinet flush mounting and cabinet surface mounting . . . . . . . . . . . . . . 279
A.3 Connection Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 281
A.4 Current Transformer Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 284
A.4.1 Accuracy limiting factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 284
Effective and Rated Accuracy Limiting Factor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 284
Calculation example according to IEC 60044–1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 284
A.4.2 Class conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 285
A.5 Default Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 286
A.5.1 LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 286
A.5.2 Binary Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287
A.5.3 Binary Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287
A.5.4 Function Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288
A.5.5 Default Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 289
A.6 Protocol-dependent Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291
A.7 Functional Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 292
A.8 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294
A.9 Information List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303
A.10 Group Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 318
A.11 Measured Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 319
Literature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 323
Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 325
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 337

SIPROTEC, 7SC80, Manual
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Introduction 1
This chapter introduces the SIPROTEC Feeder Automation Controller 7SC80 and gives an overview of the de-
vice's application, properties and functions.
1.1 Overall Operation 16
1.2 Application Scope 18
1.3 Characteristics 20

Introduction
1.1 Overall Operation
SIPROTEC, 7SC80, Manual
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1.1 Overall Operation
This chapter introduces the SIPROTEC Feeder Automation Controller 7SC80 and gives an overview of the de-
vice's application, properties and functions.
Analog Inputs
The measuring inputs (MI) convert the currents and voltages coming from the measuring transformers and
adapt them to the level appropriate for the internal processing of the device. The device provides 4 current
transformers, 1 voltage transformer, and – depending on the model – 3 additional voltage transformers. Three
current inputs serve for the input of the phase currents, another current input (IN) can be used for measuring
the ground fault current IN(current transformer neutral point).
The optional voltage transformers can either be used to input three phase-to-ground voltages or for two phase-
to-phase voltages and the displacement voltage (open delta voltage). It is also possible to connect two phase-
to-phase voltages in an open delta connection.
The voltage input Vx which is always available can be used for single-phase measurements of any voltages.
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 an analog-to-digital converter and memory compo-
nents for the transmission of data to the microcomputer.
Figure 1-1 Hardware structure Feeder Automation Controller 7SC80

Introduction
1.1 Overall Operation
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Microcomputer System
Apart from processing the measured values, the microcomputer system (μC) also executes the actual protec-
tion and control functions. They especially include:
• 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 Elements
LEDs on the device front indicate the device's readiness for operation and signal the states of the integrated
battery controller.
Interfaces
Communication with DIGSI can be effected via the USB-DIGSI interface or via port F (system/service inter-
face). This allows for all device functions to be easily executed.
In addition to the device communication via DIGSI, port F 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 replaceable buffer battery is located on the side of the device.
Communication Power Supply
The Feeder Automation Controller 7SC80 can supply external communication components (only order variant
24/48V). The supply is effected via the auxiliary power supply connection or via the battery and can be cut off
by the Feeder Automation Controller 7SC80, e.g. in the case of low battery voltage.

Introduction
1.2 Application Scope
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1.2 Application Scope
The Feeder Automation Controller 7SC80 can be used as protection, control and monitoring unit for line pro-
tection in networks with grounded or low-resistance grounded neutral point structure. It is suitable for networks
that are radial and supplied from a single source, open or closed looped networks, and for lines with sources
at both ends.
The Feeder Automation Controller 7SC80 includes the functions that are usually necessary for protection, mon-
itoring of circuit breaker positions and control of circuit breakers; therefore, the device can be employed univer-
sally. The device also provides excellent backup protection of differential protective schemes of any kind.
The Feeder Automation Controller is particularly suitable for the use in distribution network automation outside
the substation. It covers the special requirements as to the temperature range, the remote control feature, and
remote access. The 24/48V batteries typically used in distribution networks are charged and monitored by the
integrated battery management.
The optional GPS module enables time synchronization of the Feeder Automation Controller 7SC80 exact to
the millisecond.
Protection Functions
Non-directional and directional overcurrent protection are the basic functions of the device. These feature def-
inite-time overcurrent elements for phase currents and ground current.
Depending on the order variant, further protective functions such as frequency protection, undervoltage and
overvoltage protection, as well as a breaker failure protection are included.
Control Functions
The device provides a control function with which the switchgear can be activated and deactivated via the Web
Monitor, port F, binary inputs and the USB interface using DIGSI.
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 posi-
tion 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 password request).
Processing of interlocking conditions for switching (e.g. switchgear interlocking) can be established with the aid
of integrated, user-configurable logic functions.
Indications and Measured Values; Fault Recording
The operational indications provide information about conditions in the power system and the device. Measure-
ment quantities and values that are calculated can be displayed locally and communicated via the serial inter-
faces.
Device indications can be processed externally via output contacts (allocatable), linked with user-definable
logic functions, and/or issued via various interfaces. Furthermore, indications can be output to a number of
virtual LEDs (allocatable) and displayed with the help of the Web Monitor.
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.

Introduction
1.2 Application Scope
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Communication
The following interfaces are available for communication with external operating, control and memory systems.
Local communication with a PC is possible via the USB-DIGSI interface on the front. The DIGSI 4 operating
software enables you to perform all operational and evaluation tasks, for example entering and modifying con-
figuration and setting parameters, configuring user-specific logic functions, reading out operational indications,
fault indications and measured values, reading out and displaying fault records, retrieving device conditions
and measured values, issuing control commands.
Depending on the order variant, additional interfaces are located on the side of the device. They serve for es-
tablishing extensive communication with other digital operating, control and memory components:
Port F serves for central communication between the device and a control center. It can be operated via copper
lines or fiber optic cables. Standard protocols are available for data transfer, e.g. IEC61850. These protocols
are also used to integrate the devices into substation control systems such as SICAM PAS.

Introduction
1.3 Characteristics
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1.3 Characteristics
General Properties
• Powerful 32-bit microprocessor system
• Complete digital measured value processing and control, from sampling and digitalization of the measured
quantities to close and trip decisions for the switchgear component
• Complete galvanic and interference-free isolation of the internal processing circuits of the measurement,
control and supply circuits of the system using instrument transformers, binary input and output modules,
and DC and AC voltage converters.
• Complete functional scope required for protection and control of a line section
• Easy device operation using the Web Monitor or a connected PC running DIGSI
• Continuous calculation and displaying of measured values and count values
• Storage of min./max. measured values (slave pointer function) and storage of long-term mean values
• Storing fault indications for the last 8 power system faults (faults in the power system) with real-time assign-
ment and instantaneous values for fault recording for a maximum time period of approx. 18 s
• Continuous monitoring of the measured quantities and of the device hardware and software
• Communication with central control and data storage equipment
• Battery-buffered clock which can be synchronized via a synchronization signal at the binary input, or via a
protocol or GPS
• Switching statistics: Counting the number of trip commands initiated by the device, logging the currents of
the last switch-off operation initiated by the device, and accumulating the eliminated short-circuit currents of
each breaker pole
• Operating hours counter: Counting the operating hours of the protected object under load
• Commissioning aids such as connection and direction check, status indication of all binary inputs and out-
puts, easy testing of port F, and influencing of information at port F during test operation.
Non-directional Overcurrent Protection
• Three definite-time overcurrent protection elements each for phase currents and ground current INor sum-
mation current 3I0
• Two-phase operation of the overcurrent protection (IA, IC) is possible.
• Blocking is possible, e.g. for reverse interlocking with any Element.
• Instantaneous tripping by any Element is possible when switching onto a fault.
• In-rush restraint with second harmonic current quantities.
Directional Overcurrent Protection
• Two definite-time overcurrent protection elements for the phase operate in parallel to the non-directional
overcurrent elements. Their pickup values and time delays can be set independently of these.
• Direction determination with cross-polarized voltages and voltage memory and dynamically unlimited direc-
tion sensitivity
• Fault direction is calculated phase-selectively and separately for phase faults, ground faults and summation
current faults.