The economical earth fault & short-circuit indicator for the future-proof secondary substations
EOR-1DS
Earth fault and short-circuit indication in a single device
EOR-1DS
The »EOR-1DS« is a compact, combined short-circuit and earth fault location indicator that offers all essential location methods. The device was specially developed as a cost-effective alternative to comparable solutions on the market. The device can be used as a non-directional short-circuit and earth fault indicator (pulse location) with the supplied Rogowski phase current sensors of type SR55 or as a directional short-circuit and earth fault indicator (pulse location + qu2 wiper) with current and voltage measurement. High-precision measurements can be carried out with modern small signal sensors and transmitted via Modbus RTU. The device is particularly important in times of energy transition in order to create grid transparency and to cope with changing conditions in power grids.
For a complete list of all available positioning methods and technical features of the EOR-1DS in comparison with its big brother, the EOR-3DS Click here.
Further questions or want to start an enquiry? Please click “Product Enquiry”.
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Presentation Flyer: EOR-1DS
Quick Comparison: EOR-1DS vs. EOR-3DS
Product Overview A. Eberle
A. Eberle Seminars in Nuremberg
EOR-1DS
EOR-1DS
Instruction Manual
Installation Manual
Technical Data Sheets
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Presentation Flyer: EOR-1DS
Quick Comparison: EOR-1DS vs. EOR-3DS
Cost-efficientcombined earth fault detection and short-circuit indication for all grid types
The EOR-1DS combines short-circuit and earth fault indication in one compact and cost-effective device, providing an economical fault indication solution for grid operators in both compensated and isolated grids. Thanks to intelligent algorithms and a wide range of available location methods, faults are detected accurately, minimising downtimes, reducing operating costs and ensuring security of energy supply.
All necessary fault location methodscombined in one device
With the EOR-1DS, network operators benefit from comprehensive fault location. The device supports a variety of established locating methods that enable reliable and fast identification of faults and which can be combined with each other according to individual customer requirements. Particularly noteworthy is the wattmetric method (cos(φ)), which enables precise detection of earth faults by analyzing the active power component of the fault currents. This method is particularly robust against symmetrical grid loads and makes a decisive contribution to reliable fault location in complex grid structures.
Supported localisation methods:
- Wattmetric method cos(φ)
- qu2 transient algorithm (transient earth fault method)
- Directional short-circuit and earth fault detection
- Pulse location
- Reactive power direction sin(φ)
Simple parameterisationvia rotary switch, SD card, Modbus or pre-parameterised on delivery
Commissioning the EOR-1DS is particularly user-friendly. All necessary settings can be made directly on the device using a rotary knob – without additional software or external configuration tools. Alternatively, parameterisation is also possible via an SD card or Modbus, or the device is delivered pre-parameterised. This saves time, makes handling easier and reduces potential sources of error, especially during on-site maintenance work.
Large memory (32 GB)for fault records and logbook
With its 32 GB memory, the EOR-1DS offers extensive capacity for fault records and logbook data. This allows grid operators to carry out long-term analyses and access historical events to better understand sources of faults. The detailed recording and storage of event data provides a sound basis for optimising grid quality, facilitates documentation for regulatory requirements and thus secures the grid supply.
The grid status always in view – flexible in your choice of sensors
Do you see a risk of grid bottlenecks due to the strong increase in decentralised generators or loads such as electromobility? Then monitor your medium-voltage level closely to keep an eye on trends.
The ‘S’ in the name gives it its name: Our EOR-1DS is optimised for the modern and highly accurate small signal sensors of all major manufacturers on the market (ABB, Zelisko, Greenwood Power, 3M and many more). Of course, there is also the option of current measurement via Rogowski sensors (SR55) and voltage measurement in parallel with a capacitive voltage tester (e.g. Capdis / WEGA). This makes it possible to determine precise current, voltage and power measurement values from the depth of the grid.
Compatiblewith classic transformers as well
The EOR-1DS can not only measure the voltage in parallel with a capacitive voltage tester (e.g. Capdis or WEGA) or via small signal sensors. It is also possible to connect a classic voltage transformer with 100 VAC / 110 VAC secondary voltage via the U10 adapter.
The same applies to current detection. In addition to the options of using Rogowoski sensors (SR55) or the small signal inputs, classic current transformers with 1 A / 5 A secondary current can be connected to the EOR-1DS using the C21/C25 adapters.
Ready for communication and interconnection
In addition to connecting the indicator via four freely parameterisable relay contacts and two fixed binary inputs, the EOR-1DS short-circuit and earth fault indicator can also be read out via a Modbus RTU connection via RS485. All information and messages can be queried in the standard register assignment and a large number of the available parameters can be changed.
Short-circuit and earth fault indicators from A. Eberle
EOR-1DS and EOR-3DS for future-proof local network stations
Quick Comparison: EOR-1DS vs. EOR-3DS
Find the right short-circuit and earth fault indicator for your application.
EOR-1DS
The economical indicator for
the secondary substation
EOR-3DS
The fault indicator for
the digital secondary substation
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
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EORSys – News
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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
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Ready for the Smart Grid of the Future?
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All information about smart grids/intelligent power grids, the technology behind them, advantages, disadvantages, challenges and current distribution.[…]
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Cost Efficient Management of Digital Secondary Substations: Earth Fault Indicator EOR-3DS as Digitisation Unit for Secondary Substations
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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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Blogpost
Brand New: Short-Circuit and Earth Fault Indicator EOR-3DS Released on 27.03.2023
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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
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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
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In the conductors of electrical power supplies, a distinction is made between the operating capacitance… […]
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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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