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رله حفاظتی زیمنس SIPROTEC 5، ماژول پایه با نمایشگر بزرگ و دو ماژول توسعه (عرض 2/3)، نمای سه‌رخ

© Siemens AG

siprotecSeries SIPROTEC 5Active

Siemens SIPROTEC 5 digital protection relays

SIPROTEC 5

The current generation of Siemens digital protection relays: a modular family for protection, control and monitoring of feeders, lines, transformers, generators, motors and busbars, engineered with DIGSI 5 and communicating over IEC 61850

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Price and delivery time are given after a technical review.

Overview

Overview

SIPROTEC 5 is the current generation of Siemens digital protection relays for medium-, high- and extra-high-voltage grids. Siemens describes it as a highly modular system that puts protection, automation and monitoring into one family, with every device engineered in one tool, DIGSI 5.

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SIPROTEC 5 is the successor of SIPROTEC 4: in SiePortal a SIPROTEC 5 family is named as the successor of every SIPROTEC 4 family that was checked, except 7SJ66. The two generations use two tools, DIGSI 4 for SIPROTEC 4 and DIGSI 5 for SIPROTEC 5, and on line relays serial protection communication between the generations is possible.

Devices by application

  • Feeder and overcurrent: 7SJ82 (compact), 7SJ85 (modular) and 7SJ86 (backup for lines)
  • Universal: 7SX800 (compact, 1/6 x 19 in), 7SX82, 7SY82 (LPIT input) and 7SX85 (modular)
  • Distance: 7SA82 (minimum tripping time 19 ms), 7SA86 (3-pole tripping, 9 ms) and 7SA87 (1-/3-pole, 9 ms)
  • Line differential and combined differential-distance: 7SD82, 7SD86, 7SD87 and 7SL82, 7SL86, 7SL87 (7SL87 with up to 6 line ends)
  • Breaker management: 7VK87
  • Transformer: 7UT82 and 7UT85 (two-winding), 7UT86 (three-winding) and 7UT87 (up to 5 sides)
  • Motor: 7SK82 (small to medium motors) and 7SK85 (all sizes, ATEX)
  • Generator: 7UM85
  • Busbar: 7SS85 with the 6MU85 merging unit
  • Bay control and fault recording: 6MD85, 6MD86 and 7KE85

Protection functions

Functions are selected and combined from the DIGSI 5 function library and added to each device. The main function of each family is: transformer differential (87T) and restricted earth fault (87N) in the 7UT, distance (21) in the 7SA, line differential (87L) in the 7SD and 7SL, busbar (87B) in the 7SS85, overcurrent (50/51) and directional (67) in the 7SJ and 7SX, and breaker failure (50BF) and synchrocheck (25) in most devices. The ANSI number of each function in a given type must be read from that device's function table in the catalog or manual.

Hardware

According to a Siemens type test report (2018), modular devices (types XXX85, XXX86 and XXX87, such as 7SA86) are built from a 1/3 x 19 in base module that is extended with 1/6 x 19 in expansion modules; Siemens' profiles give a total width of 1/3 to 2/1 x 19 in. There are three designs: flush mounting with the operator panel on the device, surface mounting with an integrated panel, and surface mounting with a detached operator panel. The panel can have a large or small display with a keypad and 16 two-colour LEDs, or no display.

Non-modular devices (types 7XX82, such as 7SJ82) are a single flush-mounted 1/3 x 19 in module and take no expansion modules; XXX84 types have modular hardware but cannot be expanded. Plug-in modules cover communication (serial and Ethernet, electrical and optical), measuring transducers and arc protection. The compact 7SX800 is separate: 1/6 x 19 in with 4 current and 4 voltage inputs.

Communication

According to the 7SA87 profile, a fixed electrical RJ45 Ethernet port serves DIGSI 5 and IEC 61850 (reporting and GOOSE), and up to four optional plug-in communication modules provide IEC 61850-8-1, IEC 61850-9-2 (client), IEC 60870-5-103, IEC 60870-5-104, Modbus TCP, DNP3 (serial and TCP) and PROFINET IO. Redundancy uses PRP and HSR (and RSTP), and IEC 61850 editions 1, 2.0 and 2.1 are compatible with each other. Cybersecurity includes role-based access control, logging of security events, signed firmware and IEEE 802.1X authentication.

Software and configuration

All devices are configured and set with DIGSI 5. Device functions and I/O are chosen with the SIPROTEC 5 configurator in the Industry Mall, and SiePortal offers several standard variants of each type under P1... codes. System version V11.00 was premiered on 7 May 2026.

Production status

SIPROTEC 5 is active: all nine articles checked in SiePortal were "Active Product". The detail is in the lifecycle section.

Features

  • Modular and non-modular: a 1/3 x 19 in base module with 1/6 x 19 in expansion modules, and single-module 7XX82 devices
  • A device for every application: feeder, distance, line and transformer differential, motor, generator, busbar and bay controller
  • Built-in RJ45 Ethernet port for DIGSI 5 and IEC 61850, with up to four optional communication modules
  • IEC 61850-8-1 and 9-2, IEC 60870-5-103 and 104, Modbus TCP, DNP3 and PROFINET IO protocols
  • PRP, HSR and RSTP redundancy and compatibility of IEC 61850 editions 1, 2.0 and 2.1
  • Cybersecurity: role-based access control, signed firmware and IEEE 802.1X
  • All devices are engineered with DIGSI 5, and display and diagnostics are available from a web browser
  • Three hardware designs: flush mounting, surface mounting with an integrated panel, and surface mounting with a detached panel

Advantages

  • Identical expansion and communication modules for all devices, which simplifies spare-part stocking
  • Continuous engineering from the single-line diagram to device parameters in one tool, DIGSI 5
  • Functions and hardware from the same family for different applications, which cuts training and part variety
  • Serial protection communication with SIPROTEC 4 on line relays, which allows a staged migration

Models and codes

Models and codes
ModelOrder codeCode typeAttributesRequest
SIPROTEC 7SX800رلهٔ جهانی فشرده (SIPROTEC 5 Compact)، بدنهٔ ۱/۶ × ۱۹ اینچ، ۴ ورودی جریان حفاظتی و ۴ ورودی ولتاژ، ۴ ورودی و ۵ خروجی باینری، اترنت الکتریکی و درگاه سریال، نمایشگر رنگی، تغذیهٔ ۲۴ تا ۲۵۰ ولت DC یا ۱۰۰ تا ۲۳۰ ولت AC؛ «Active Product» از ۲۶ اکتبر ۲۰۲۲7SX8000-3AA50-1BA0Exact code
Housing:
1/6 x 19 in
Analog inputs:
4 I (protection), 4 U
Binary I/O:
4 BI, 5 BO (4 fast, 1 life contact)
Ethernet:
electrical
Auxiliary supply:
24 V to 250 V DC, 100 V to 230 V AC
Lifecycle:
Active Product
Sales release:
2022-10-26
Request SIPROTEC 7SX800
SIPROTEC 7SJ85حفاظت اضافه‌جریان مدولار، نصب توکار، بدنهٔ ۱/۲ × ۱۹ اینچ، ۴ ورودی جریان و ۴ ورودی ولتاژ، ۳۵ ورودی و ۳۳ خروجی باینری، نمایشگر بزرگ و کلید سوئیچ، تغذیهٔ ۶۰ تا ۲۵۰ ولت DC یا ۱۰۰ تا ۲۳۰ ولت AC؛ کد نوع استاندارد در SiePortal و «Active Product» از ۷ اکتبر ۲۰۲۲P1J350048Exact code
Housing:
flush mounting, 1/2 x 19 in
Analog inputs:
4 CT (protection), 4 VT
Binary I/O:
35 BI, 33 BO (27 ST + 6 F)
Display:
large display, 32 LEDs, key switch
Auxiliary supply:
DC 60 V to 250 V, AC 100 V to 230 V
Lifecycle:
Active Product
Sales release:
2022-10-07
Request SIPROTEC 7SJ85
SIPROTEC 7SA87حفاظت دیستانس تک‌فاز یا سه‌فاز، نوع استاندارد، نصب توکار، ۴ ورودی جریان و ۴ ورودی ولتاژ، ۱۱ ورودی و ۹ خروجی باینری؛ «Active Product» از ۲۵ آوریل ۲۰۲۵. پایهٔ نوع در SiePortal با کد 7SA8700-0XX00 هم «Active Product» استP1A100151Exact code
Housing:
flush mounting
Analog inputs:
4 CT (protection), 4 VT
Binary I/O:
11 BI, 9 BO (3 ST + 6 F)
Tripping:
1-pole and 3-pole
Lifecycle:
Active Product
Sales release:
2025-04-25
Request SIPROTEC 7SA87
SIPROTEC 7SL87حفاظت دیفرانسیل و دیستانس خط، نوع دوسره و قابل توسعه، تک‌فاز یا سه‌فاز، نصب توکار، ۴ ورودی جریان و ۴ ورودی ولتاژ، ۲۳ ورودی و ۲۲ خروجی باینری؛ «Active Product» از ۴ اوت ۲۰۲۵P1C1000023Exact code
Housing:
flush mounting
Analog inputs:
4 CT (protection), 4 VT
Binary I/O:
23 BI, 22 BO (14 ST + 8 F)
Line ends:
2-end variant, extendable (the type supports up to 6)
Lifecycle:
Active Product
Sales release:
2025-08-04
Request SIPROTEC 7SL87
SIPROTEC 7UT85حفاظت دیفرانسیل ترانسفورماتور دوسیم‌پیچه، نوع استاندارد، نصب توکار، ۸ ورودی جریان حفاظتی، ۷ ورودی و ۷ خروجی باینری؛ «Active Product» از ۱۶ ژوئن ۲۰۲۵P1F1000115Exact code
Housing:
flush mounting
Analog inputs:
8 CT (protection), 0 VT
Binary I/O:
7 BI, 7 BO (3 ST + 4 F)
Lifecycle:
Active Product
Sales release:
2025-06-16
Request SIPROTEC 7UT85
SIPROTEC 7SK85حفاظت موتور مدولار، نصب توکار، ۸ ورودی جریان حفاظتی و ۴ ورودی ولتاژ، ۲۵ ورودی و ۲۲ خروجی باینری؛ «Active Product» از ۲۰ مه ۲۰۲۶P1H100249Exact code
Housing:
flush mounting
Analog inputs:
8 CT (protection), 4 VT
Binary I/O:
25 BI, 22 BO (10 ST + 12 F)
Lifecycle:
Active Product
Sales release:
2026-05-20
Request SIPROTEC 7SK85
SIPROTEC 7UM85حفاظت ژنراتور مدولار، نصب توکار، ۷ ورودی جریان حفاظتی و ۱ ورودی جریان حساس، ۸ ورودی ولتاژ، ۱۹ ورودی و ۱۵ خروجی باینری؛ «Active Product» از ۳ ژوئن ۲۰۲۵P1L100009Exact code
Housing:
flush mounting
Analog inputs:
7 CT (protection) + 1 sensitive, 8 VT
Binary I/O:
19 BI, 15 BO (3 ST + 12 F)
Lifecycle:
Active Product
Sales release:
2025-06-03
Request SIPROTEC 7UM85
SIPROTEC 7SS85 central unitواحد مرکزی (CU) حفاظت باسبار با ۶ ناحیه (zone) و تصویر وضعیت سکسیونرها (disconnector image) به‌صورت داخلی، نصب توکار، ۲۵ ورودی و ۱۸ خروجی باینری و بدون ورودی جریان یا ولتاژ (اندازه‌گیری از واحدهای فیدر)؛ «Active Product» از ۲۷ نوامبر ۲۰۲۳P1E588430Exact code
Zones:
6
Disconnector image:
Included
Housing:
flush mounting
Analog inputs:
0 CT, 0 VT
Binary I/O:
25 BI, 18 BO (18 ST)
Lifecycle:
Active Product
Sales release:
2023-11-27
Request SIPROTEC 7SS85 central unit
SIPROTEC 6MD85کنترلر فیدر (Bay Controller)، نصب توکار، ۴ ورودی جریان حساس و ۴ ورودی ولتاژ، ۷۱ ورودی و ۲۵ خروجی باینری؛ «Active Product» از ۶ فوریهٔ ۲۰۲۶P1G1000023Exact code
Housing:
flush mounting
Analog inputs:
0 CT (protection) + 4 sensitive, 4 VT
Binary I/O:
71 BI, 25 BO (19 ST + 6 F)
Lifecycle:
Active Product
Sales release:
2026-02-06
Request SIPROTEC 6MD85

Technical specifications

Check the specifications against the data sheet of the exact code before ordering.
مشخصات عمومی
Family structureFamily structureModular (types XXX85, XXX86, XXX87), non-modular (types 7XX82), compact 7SX800
Status in SiePortalStatus in SiePortalActive Product (9 articles checked)
Role towards SIPROTEC 4Role towards SIPROTEC 4Successor, named per family in SiePortal
System versionSystem versionV11.00 (premiere 2026-05-07)
دستگاه‌ها بر اساس کاربرد
Feeder and overcurrentFeeder and overcurrent7SJ82, 7SJ85
Universal (feeder, line, motor)Universal (feeder, line, motor)7SX800, 7SX82, 7SY82, 7SX85
Distance protectionDistance protection7SA82 (19 ms), 7SA86 (3-pole, 9 ms), 7SA87 (1-/3-pole, 9 ms)
Line differential, differential-distance, breaker managementLine differential, differential-distance, breaker management7SD82, 7SD86, 7SD87; 7SL82, 7SL86, 7SL87; 7VK87
Transformer differentialTransformer differential7UT82, 7UT85 (2 windings), 7UT86 (3 sides), 7UT87 (up to 5 sides)
Motor protectionMotor protection7SK82 (small to medium motors), 7SK85 (all sizes)
Generator protectionGenerator protection7UM85
Busbar protection and merging unitBusbar protection and merging unit7SS85, 6MU85
Bay controller and fault recorderBay controller and fault recorder6MD85, 6MD86, 7KE85
حفاظت
Transformer 7UT85Transformer 7UT851 differential function (standard or auto transformer), up to 2 restricted earth-fault functions
Line 7SL87Line 7SL87Differential + distance, up to 6 line ends, 1-pole tripping
Busbar 7SS85Busbar 7SS85Centralized, decentralized or hybrid; single to five-way busbars, breaker-and-a-half, ring busbars
Generator 7UM85: certificationsGenerator 7UM85: certificationsEN 60079-14 or ATEX variants; SIL 2 hardware and software for generator reverse protection
Motor 7SX800Motor 7SX800Small to medium-sized motors (100 kW to 2 MW)
Function selection on 7SX800Function selection on 7SX800Activated with function points
ساختار سخت‌افزار
Base and expansion modules (modular)Base and expansion modules (modular)Base module 1/3 x 19 in; expansion modules 1/6 x 19 in
Housing width of modular devicesHousing width of modular devices1/3 to 2/1 x 19 in
Design and mountingDesign and mountingFlush; surface with integrated panel; surface with detached panel (modular). Non-modular: flush only
Non-modular device (7XX82)Non-modular device (7XX82)One 1/3 x 19 in module, no expansion modules
Operator panel of the base moduleOperator panel of the base moduleLarge or small display with keypad and 16 two-colour LEDs, or no display
Power supply PS201Power supply PS201DC 24 V/48 V or 60 V to 250 V; AC 100 V to 230 V
Plug-in modulesPlug-in modulesCommunication (serial, Ethernet), measuring transducer, arc protection (not for busbar protection and fault recorder)
Compact 7SX800Compact 7SX8001/6 x 19 in; 4 CT, 4 VT; 4, 14 or 17 BI; 5, 11 or 8 BO
ارتباطات
Protocols (plug-in modules, 7SA87)Protocols (plug-in modules, 7SA87)IEC 61850-8-1, IEC 61850-9-2 client, IEC 60870-5-103, IEC 60870-5-104, Modbus TCP, DNP3 serial and TCP, PROFINET IO
Built-in Ethernet portBuilt-in Ethernet portElectrical RJ45 for DIGSI 5 and IEC 61850 (reporting, GOOSE); up to 4 plug-in communication modules
RedundancyRedundancyPRP, HSR, RSTP
IEC 61850 editionsIEC 61850 editionsEditions 1, 2.0 and 2.1 compatible
Process bus and time synchronizationProcess bus and time synchronizationIEC 61850-9-2, IEEE 1588
PMUPMUIEEE C37.118
Protection communication between devicesProtection communication between devicesOptical fibre, two-wire, communication networks (IEEE C37.94 and others); with SIPROTEC 4 on line relays
CybersecurityCybersecurityRole-based access control, security event logging, signed firmware, IEEE 802.1X; NERC CIP and BDEW Whitepaper
Modbus on 7SX800Modbus on 7SX800Modbus client RTU or TCP
مهندسی
SoftwareSoftwareDIGSI 5 (P1X347 Standard, 5 licences, download: Active Product)
Upgrade from DIGSI 4Upgrade from DIGSI 4P1X471 (DIGSI 4 Professional to DIGSI 5 Standard)
ConfiguratorConfiguratorSIPROTEC 5 configurator in the Industry Mall
Web accessWeb accessAll information, diagnostics, vector diagrams and single-line views in a web browser

Modules and accessories

  • DIGSI 5 Standard (P1X347)

    DIGSI 5 engineering software, Standard version, 5 licences, download only; an "Active Product" since 8 September 2020

  • DIGSI 4 to DIGSI 5 upgrade (P1X471)

    Upgrade from DIGSI 4 Professional (10 licences) to DIGSI 5 Standard, download only

  • Expansion modules and I/O boards

    1/6 x 19 in expansion modules with IO2xx input/output boards or the CB202 plug-in assembly with its own power supply, for modular devices

  • Communication plug-in modules (USART, ETH)

    Serial communication modules (electrical, optical and long-distance optical) and Ethernet modules (electrical and optical) that fit in the base module or in an expansion module

  • Measuring-transducer module and arc protection module

    A measuring-transducer module and an arc protection module; the arc protection module is not available for busbar protection and the fault recorder

  • Process-bus module PB201

    Process-bus module with 7 LC duplex interfaces, one of which is a service port, in a 1/6 x 19 in housing

  • Merging unit SIPROTEC 6MU85

    Merging unit to IEC 61869-9, IEC 61869-13 and IEC 61850-9-2 for new solutions and migration concepts for existing systems, used with busbar protection

Documents

Official manufacturer links

Applications

  • Protection of feeders, lines and capacitor banks in distribution, sub-transmission and transmission grids
  • Distance and differential protection of overhead lines and cables
  • Protection of two-winding up to multi-winding transformers
  • Protection of generators, motors and synchronous condensers
  • Centralized, decentralized or hybrid busbar protection
  • Bay control, fault recording and merging units for the process bus

Frequently asked questions

What is the difference between the 7XX82, XXX84, XXX85, XXX86 and XXX87 types?

According to a Siemens type test report (2018): types XXX85, XXX86 and XXX87 (such as 7SA86) are modular devices and are extended with expansion modules. XXX84 types have the same hardware but cannot be expanded. 7XX82 types (such as 7SJ82) are non-modular: a single 1/3 x 19 in flush-mounted module. The compact 7SX800, at 1/6 x 19 in, is separate.

Which SIPROTEC 5 device should I choose for each application?

Feeder and overcurrent: 7SJ82 or 7SJ85. Line distance: 7SA82, 7SA86 or 7SA87. Line differential: 7SD8x or 7SL8x. Transformer: 7UT82 and 7UT85 (two-winding), 7UT86 (three-winding), 7UT87 (up to 5 sides). Motor: 7SK82 or 7SK85. Generator: 7UM85. Busbar: 7SS85. A simple feeder or motor with one device: 7SX800. The exact choice depends on the number of inputs, the functions and the grid voltage, and is finalized with the SIPROTEC 5 configurator.

Which protocols does SIPROTEC 5 have?

According to the 7SA87 profile: a built-in Ethernet port for DIGSI 5 and IEC 61850 (reporting and GOOSE), and up to four optional communication modules for IEC 61850-8-1, IEC 61850-9-2 (client), IEC 60870-5-103, IEC 60870-5-104, Modbus TCP, DNP3 (serial and TCP) and PROFINET IO. Redundancy is PRP, HSR and RSTP. The 7SX800 profile lists Modbus client over RTU or TCP; read the full protocol list of each type in the catalog or the communication manual.

Can a SIPROTEC 5 simply replace a SIPROTEC 4?

SiePortal names a successor family in SIPROTEC 5 for the old SIPROTEC 4 devices (for example 7UT613 to 7UT85/86/87), but the Siemens pages do not say that housing, wiring and I/O are interchangeable. The housing and module structure is not the same in the two generations, the software is DIGSI 5, and how the settings are carried over has to be checked. In every project the inputs, outputs and protocols must be compared with the existing device.

Which software is used to set it?

All SIPROTEC 5 devices are configured and set with DIGSI 5; DIGSI 4 is for SIPROTEC 2 to SIPROTEC 4. DIGSI 5 Standard (for example P1X347 with 5 licences) is sold as a download, and an upgrade code (P1X471) exists for holders of DIGSI 4 Professional.

What does a SIPROTEC 5 order number look like?

A device is built with the SIPROTEC 5 configurator in the Industry Mall, so its code depends on the configuration. SiePortal lists several standard variants of each type under codes such as P1J350048 (7SJ85) or P1F1000115 (7UT85); only the 7SX800 was seen under a classic code, 7SX8000-3AA50-1BA0. A customer's exact code must be taken from the configuration or the device label.

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    رلهٔ حفاظتی دیجیتال

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