The economical earth fault & short-circuit indicator for the future-proof secondary substations

EOR-1DS

Cost-efficient combined short-circuit and earth fault indicator
Offers all the essential fault location methods
steuerung
Simple parameterisation, also possible without software
Large memory (32 GB) for fault records and logbook
Cost-efficient combined short-circuit and earth fault indicator
Offers all the essential fault location methods
steuerung
Simple parameterisation, also possible without software
Large memory (32 GB) for fault records and logbook

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”.

Get to know the EOR-1DS at a glance.

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.

short-circuit-indicator

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)
short-circuit-indicator

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.

short-circuit-indicator

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.

short-circuit-indicator

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

Quick Comparison: EOR-1DS vs. EOR-3DS

Find the right short-circuit and earth fault indicator for your application.

(Download quick comparison as PDF here)

erdschlussanzeiger-kurzschlussanzeiger-short-circuit-and-earth-fault-indicator

EOR-1DS
The economical indicator for
the secondary substation

short-circuit-and-earth-fault-indicator

EOR-3DS
The fault indicator for
the digital secondary substation

erdschlussanzeiger-kurzschlussanzeiger-short-circuit-and-earth-fault-indicator
Available location methods

qu2 transient algorithm

Transient earth fault method

Directional short-circuit and earth fault detection

Pulse location

Wattmetric method cos(φ)

Reactive power direction sin(φ)

Software

Simple operation and parameterisation without software

Extensive cyber security features
Fault records and logbook

✔️

Flash memory up to 32 GB
Voltage measurement

Capacitive in parallel with VDS systems, low power sensors (two-wire technology) and classic transducers

Current measurement

Rogowski folding transducers, low power sensors (two-wire technology) and classic transducers

SCADA / Communication

Modbus RTU

Applicable as a digitisation unit for digital secondary substations

short-circuit-and-earth-fault-indicator
Available location methods

qu2 transient algorithm

Transient earth fault method

Directional short-circuit and earth fault detection

Pulse location

Wattmetric method cos(φ)

Reactive power direction sin(φ)

qui-Method

Restriking faults

Harmonics method

Software

Open setup as required with »AEToolbox« software

Certificate handling, user/role concept and encrypted connections

Extensive cyber security features
Fault records and logbook

✔️

Flash memory up to 32 GB
Voltage measurement

Capacitive in parallel with VDS systems, Low power sensors (two-wire technology or RJ45) and classic transducers

Current measurement

Low power sensors (two-wire technology or RJ45) and classic transducers

SCADA / Communication

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

Applicable as a digitisation unit for digital secondary substations

Patch- and Devicemanagement via MQTT

Mass remote parameterisation and firmware updates
via MQTT Management&Operations-function

You have questions about the EOR-1DS?

Our specialists will be happy to help you!


Contact us

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