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HANNOVER MESSE 2018, 23 - 27 April
Homepage>Exhibitors & Products >Earthfault-&Short-circuit indic. EOR-3D

Earthfault-&Short-circuit indic. EOR-3D

An expert solution is within your reach...

Eberle, A.

Exhibitor details
Logo Earthfault-&Short-circuit indic. EOR-3D

Product description

In order to take advantage of the different earthfault detection methods in various fault situations, the freely programmable earthfault-detection and short-circuit-indicator EOR-3D makes it possible to select and combine the following methods:

- Transient-method using qu2 und qui algorithms
- for single faults
- intermittent and restriking faults
- fault detection in loops with high circulating current
- Direction of reactive power of the zero-sequence system, resp.sin(?) method
- Direction of active power of the zero-sequence system, resp. cos(?) method, suitable instrument transformers assumed
- Harmonics method
- Pulse-method: Standard and using HPCI
- Indication of short-circuits and double earthfaults
- Directional short-circuit indicator with suppression of signals, caused by atmospheric interference
- Short-circuit recognition with adaptive trigger levels
- Recognition of cross country earth-faults
- Recognition of series faults by monitoring the current unbalance
- Recognition of ferroresonance

The following features are available, either as standard or optional:

- Logbook of Events
- Fault recorder with a sampling rate of ? 2 kHz
- Records with memory depth up to the GB-range, by the use of an internal mass storage based on a micro-SD card
- Ethernet interface used for parameterization and to transfer the data from the logbook and the fault recorder via PC or intranet.
- USB 2.0 FS interface for an USB-stick used to transfer the data from the logbook and the fault recorder and for firmware-updates
- Depending on the configuration, EOR-3D is adapted for the use of traditional instrument transformers or current- and voltage-sensors
- A local integration of EOR-3Ds can be made via a proprietary LAN, based on CAN
- The Ethernet-interface with 10/100 MHz allows a LAN connection, so that a quick transfer of data, parameterization and even a simplified GOOSE transmission is possible

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