The short-circuit and earth fault indicator 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 location in a single compact device. It can be used as a classic earth fault and short-circuit indicator, 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
EOR-3DS
EOR-3DS
Instruction manual
Technical Data Sheets
AEToolbox
AEToolbox
Instruction Manual
The advantages of the EOR-3DS as short-circuit and earth fault indicator
Numerous fault location processes
available in one single device
The earth and short-circuit fault indicator 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 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 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 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:
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).
