EOR-1DS – The Cost-Effective Earth Fault Indicator and Short-Circuit Indicator for Future-Proof Secondary Substations

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 analysing 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:

Simple Parameterisation via 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 meaning: 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.

Compatible With 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 Rogowski 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 over RS485. All information and messages can be queried in the standard register assignment and a large number of the available parameters can be changed.