The short-circuit & earth fault detection device for the future-proof secondary substation
EOR-3DS
Fault location in analog as well as in digital secondary substations
EOR-3DS
The EOR-3DS combines short-circuit and earth fault indication in a single compact device. It can be used as a classic short-circuit and earth fault detection device, as well as digitisation unit for secondary substations. The device combines the advantages of various location processes. Through the prioritization and weighting of the location processes, they can be combined perfectly. This makes the EOR-3DS a superior aid when locating earth faults and short-circuits in analog as well as in digital secondary substations.
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Cross-Product Downloads
Cross-Product Downloads
Special Publications
Product Overview A. Eberle
Quick Comparison: EOR-1DS vs. EOR-3DS
EOR-3DS
EOR-3DS
Instruction Manual
Installation Manual
Technical Data Sheets
Firmware
Cumulocity IoT Certificate
Quick Comparison: EOR-1DS vs. EOR-3DS
AEToolbox
AEToolbox
Instruction Manual
The advantages of the EOR-3DS as short-circuit and earth fault detection device
Numerous fault location processes
available in one single device
The earth fault detection device offers a wide range of location processes for both compensated and isolated networks; these can also be prioritised.
Compensated networks:
- Transient earth fault process through use of the qu2 and qui algorithms for one-time faults, intermittent faults (qui), faults in loops with large circulating currents (qu2) and erroneous resistances can be located in the kOhm range
- Active power direction method or cos(φ): Evaluation of the active power direction, active residual current increase
- Harmonics process with measurement of the associated power direction for a user-selected frequency
- Pulse location
- Directional or non-directional short-circuit indicator with configurable reset time
Isolated networks:
- Transient earth fault detection with the use of the qu2 and qui algorithms for one-time faults, restriking faults (qui) and faults in loops with large circulating currents (qu2)
- Reactive power direction or sin(φ) method
- Directional or non-directional short-circuit indicator with configurable reset time
High flexibility
through free programmability
Using the LUA programming language, customer-specific functions can be implemented in the earth fault detection device EOR-3DS. Information can also be exchanged directly between several EOR-3DS via Ethernet and functions can be realised based on this, e.g. monitoring functions for switching in compact switchgear.
Communications protocols (SCADA)
for every application
The earth fault detection device EOR-3DS provides a wide range of protocols that can be used in parallel or one-by-one, including also IIot protocols via *MQTT.
Using the Modbus-Master Function, the EOR-3DS can also connect up to 6 devices (regardless of the manufacturer!) as Modbus slaves via Modbus RTU, translating the data into any other supported protocol.
This means that the EOR-3DS can also be used as a gateway or RTU.
The following protocols are available:
- MQTT IIoT / Management & Operations (incl. encryption with customer-specific certificates)
- IEC 60870-5-101 / 104
- IEC 60870-5-103 including fault records
- DNP 3.0
- IEC 61850 GOOSE
- Modbus RTU or TCP
- Modbus Master for up to 6 devices
The grid status always in view
flexible in the choice of your sensors
Do you see the risk of grid bottlenecks due to the strong expansion of decentralized generators or loads such as electromobility? Then monitor your medium-voltage level closely to keep an eye on trends.
Our EOR-3DS is optimized for the modern and highly accurate low power sensors of all major manufacturers on the market (Siemens, ABB, Zelisko, Greenwood Power and many more). Of course there is also the possibility of voltage measurement parallel to a capacitive voltage detection system (e.g. Capdis / WEGA). This provides the possibility to determine precise current, voltage and power measurement values even at the edge of the network.
Also at home in the world of classic voltage transducers
EOR-3DS can not only measure the voltage in parallel to a capacitive voltage detection system (e.g. Capdis or WEGA) or via low power sensors. The connection of a classic voltage transformer with 100V AC / 110V AC secondary voltage is also possible via the U10 adapter.
The same applies to current detection. Besides the possibilities of using low power inputs also classic current transformers with 1A / 5A secondary current can be connected to EOR-3DS when using the C21/C25 adapters.
Fit for the future with the EOR-3DS
through IT security incl. user administration
The AEToolbox parameterisation software communicates with the EOR-3DS devices in encrypted form. In addition, a user/role concept allows the devices to be password-protected. Here, access via TCP (AEToolbox) and the front panel of the EOR-3DS can be configured separately. Furthermore, the EOR-3DS provides fully implemented certificate handling for encrypted communication with IIoT software (via MQTT).
*MQTT (originally MQ Telemetry Transport) is a network protocol for machine-to-machine communication (M2M) from the field of the “Internet of Things” (IoT), which enables the transmission of telemetry data in the form of messages between devices, in particular the connection of sensors and actuators in electrical engineering. Since 2013, MQTT has been standardised as an IoT protocol by the Organization for the Advancement of Structured Information Standards (OASIS).
The advantages of the EOR-3DS as digitisation unit for secondary substations
The earth fault indicator EOR-3DS in the digital secondary substation combines classic earth fault and short-circuit location with the necessary digital interface functions. For the digital secondary substation, this turns a straightforward short-circuit and earth fault indicator into a completely new class of device:
Earth fault indicator EOR-3DS as digitisation unit for secondary substations
The digital secondary substations is a key element for distribution system operators (DSO) in terms of automation, monitoring, and efficient operations of their grids. These digital secondary substations will be a vital element of the future actively operated smart grid and thus DSOs as well as manufacturers will have to face new challenges such as large-scale roll-outs of networked devices distributed over the whole power grid. The EOR-3DS in its function as a digitisation unit for secondary substations enables DSOs to operate a large number of digital secondary substations in a future-proof manner.
Implementing future-proof digital secondary substations
The EOR-3DS in its function as digitisation unit
- Management & Operations Functions (*MQTT-Protocol):
- Reduces your operating costs by supporting mass parameterisation and remote firmware updates
- Bulk remote parameter setting, bulk over-the-air firmware update
- Saves time and money in maintenance
- Scalable to thousands of devices in rollout
- SCADA & IIoT-Communication (*MQTT-Protocol):
- Provides network transparency and flexibility in the grid through remote control and remote metering
- Record medium voltage readings via high accuracy low power sensors
- Distribute measured values via SCADA and IIoT communication (MQTT)
- Get real data for accurate condition estimation on all voltage levels
- Remote reported & remote controlled:
- Increases the level of grid automation
- Fault localisation and narrowing down of the fault location by remote signalling of all units
- Remote switching of all cable fields and detection of all switch positions and remote control switches
- Future-proof for higher autonomy functions (free programmability)
- IT-Security:
- Meets the highest standards through encrypted communication with certificate management
- Encrypted communication with the AEToolbox parameterisation software
- Encrypted communication of the MQTT protocols
- Certificate handling incl. signed manufacturer certificate and up to 5 additional operator certificates
*MQTT (originally MQ Telemetry Transport) is a network protocol for machine-to-machine communication (M2M) from the field of the “Internet of Things” (IoT), which enables the transmission of telemetry data in the form of messages between devices, in particular the connection of sensors and actuators in electrical engineering. Since 2013, MQTT has been standardised as an IoT protocol by the Organization for the Advancement of Structured Information Standards (OASIS).
Digital local substations in the distribution grid of the future
EOR-3DS as a digitization unit at Netze BW
Quick Comparison: EOR-1DS vs. EOR-3DS
Find the right short-circuit and earth fault indicator for your application.
EOR-1DS
The fault indicator for
analog secondary substations
EOR-3DS
The fault indicator for
digital secondary substations
qu2 transient algorithm
Transient earth fault methodDirectional short-circuit and earth fault detection
Pulse location
Wattmetric method cos(φ)
Reactive power direction sin(φ)
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Simple operation and parameterisation without software
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Extensive cyber security features✔️
Flash memory up to 32 GBCapacitive in parallel with VDS systems, low power sensors (two-wire technology) and classic transducers
Rogowski folding transducers, low power sensors (two-wire technology) and classic transducers
Modbus RTU
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qu2 transient algorithm
Transient earth fault methodDirectional short-circuit and earth fault detection
Pulse location
Wattmetric method cos(φ)
Reactive power direction sin(φ)
qui-Method
Restriking faultsHarmonics method
Open setup as required with »AEToolbox« software
Certificate handling, user/role concept and encrypted connections
Extensive cyber security features✔️
Flash memory up to 32 GBCapacitive in parallel with VDS systems, Low power sensors (two-wire technology or RJ45) and classic transducers
Low power sensors (two-wire technology or RJ45) and classic transducers
Modbus RTU/TCP (Incl. “Modbus Master”)
IEC 60870-5-101 / 104, IEC 60870-5-103 Including Fault Records, IEC 61850 GOOSE, DNP 3.0
MQTT Management&Operations
MQTT IoT
Patch- and Devicemanagement via MQTT
Mass remote parameterisation and firmware updatesvia MQTT Management&Operations-function
Further earth fault and short-circuit indicators
Discover our range of products
News from the Productgroup
EORSys – News
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Our International Partner Week 2024 – many old friends and new faces were our guests, it was a pleasure.[…]
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Profibus-DP in the types B01 & B02 is currently scheduled for product discontinuation.[…]
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In this technical report, Gerald Jacob (Product Manager »EORSys«) uses a specific example to illustrate how distribution system operators can meet the challenges of energy transition in the medium and[…]
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General Knowledge
Earth fault explained – basics and functions of an electrical phenomenon
6. March 2024
Everything you need to know about earth faults – from the basics, causes and examples to the consequences. Find out more in this article about earth fault clearing, compensation, location and the benefits[…]
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General Knowledge
Ready for the smart grid of the future?
6. March 2024
All information about smart grids/intelligent power grids, the technology behind them, advantages, disadvantages, challenges and current distribution.[…]
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Special Publication
Cost Efficient Management of Digital Secondary Substations: Earth Fault Indicator EOR-3DS as Digitisation Unit for Secondary Substations
11. August 2023
Digital secondary substations are becoming a key element for distribution system operators in terms of automation, monitoring, and efficient operations of their networks. Read this technical report about[…]
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Blogpost
Kick-off for Mass Rollout of the Digital Local Network Station at »Netze BW«
31. July 2023
Our product manager Gerald Jacob (»EORSys«) with a short Q&A at the official kick-off event of the digital secondary station »FFU 2.0«.[…]
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Product innovation
Product discontinuation: Current Injection CI, as of 30.06.2023
14. July 2023
The Current Injection CI is currently scheduled for product discontinuation.[…]
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Blogpost
Brand New: Short-Circuit and Earth Fault Indicator EOR-3DS Released on 27.03.2023
27. March 2023
New combined earth fault and short circuit indicator EOR-3DS: AVAILABLE FOR ORDER NOW[…]
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Product innovation
Product announcement: Short-circuit and earth fault indicator EOR-3DS released on 27.03.2023
24. March 2023
New combined earth fault and short circuit indicator EOR-3DS: AVAILABLE NOW[…]
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Blogpost
Product Announcement: Short and Earth Fault Locator EOR-1DS Released 05.08.2022
23. August 2022
We are pleased to inform you that the product »Combined Earth Fault and Short Circuit Indicator EOR-1DS« is officially released as of today. […]
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Product innovation
Product Announcement: Short and earth fault locator EOR-1DS released 05.08.2022
23. August 2022
Combined earth fault and short circuit indicator EOR-1DS: AVAILABLE NOW![…]
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Product innovation
Product discontinuation: DIN rail housing EOR-3D (characteristic B02) as of 30.06.2020
12. April 2022
The EOR-3D with characteristic B02 (article numbers: 119.8500 to 119.8584) is currently planned for product discontinuation.[…]
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Product innovation
Product discontinuation: Short-circuit and earth fault indicator EOR-1D, as of 31.03.2022 (successor will be EOR-1DS)
12. April 2022
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Product innovation
Product care / follow-up device: EOR-3D B01 & B03 become the substantially optimized EOR-3DS
12. April 2022
The EOR-3D with feature B01 or B03 (part numbers: 119.80xx to 119.82xx.xx) is currently planned for product discontinuation.[…]
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Info letter
Info Letter No. 21: The influence of the contact resistance at the earth-fault location on the zero sequence voltage UEN in compensated networks
7. September 2021
The earth fault in compensated networks is usually presented without a contact resistance at the fault…[…]
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Info letter
Info Letter No. 20: Capacitance of conductors
7. September 2021
In the conductors of electrical power supplies, a distinction is made between the operating capacitance… […]
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Info letter
Info Letter No. 18: Transient relay for high resistance, intermittent and recurrent earth faults (Part 2)
7. September 2021
Figure 3 can also be used for the determination of static earth faults. In an isolated network the entire…[…]
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Info letter
Info Letter No. 17: Transient relay for high resistance, intermittent and recurrent earth faults (Part 1)
7. September 2021
The statistics show that earth faults constitute a large proportion of network faults. Conventional relays…[…]
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Info letter
Info Letter No. 15: Earth fault location using the harmonic procedure (Part 2)
7. September 2021
For the study of the behaviour of the harmonic currents and voltages in the compensated network, at…[…]
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