The earth fault and short-circuit indicator for in-depth location

EOR-1D

erdschlussfall
The reliable qu2 algorithm as the core of the earth fault and short-circuit indicator
niederspannungsregelung-messwerte
Pulse location with angle evaluation
Simulation-Messwerte-Prozesswerte
Intuitive operation via in-built rotary button
rundsteuersignalanalyse
Thanks to the backup battery, power cuts are no problem
erdschlussfall
The reliable qu2 algorithm as the core of the earth fault and short-circuit indicator
niederspannungsregelung-messwerte
Pulse location with angle evaluation
Simulation-Messwerte-Prozesswerte
Intuitive operation via in-built rotary button
rundsteuersignalanalyse
Thanks to the backup battery, power cuts are no problem
erdschlussanzeiger-erdschlussortung

Earth fault and short-circuit location in a single device

EOR-1D

The EOR-1D combines short-circuit and earth-fault location in a single compact device. The installed device can be used as a non-directional short-circuit and earth current indicator (pulse location) as long as only the Rogowski phase current sensors are used. In addition, the EOR-1D can be used as a directional short-circuit and earth fault indicator (pulse location + qu2 transient) if both voltage and current measurement can be provided.

The reliable qu2 algorithm as the core of the earth fault and short-circuit indicator

The reliable qu2 algorithm as the core of the earth fault and short-circuit indicator

For compensated and isolated networks the reliable qu2 transient algorithm, known from the EOR-3D, can be used.

  • One-time evaluation of the transient process when an earth fault occurs
  • Recognition of low- and high-resistance faults
  • Elimination of circulating currents in loop operation

Pulse location with angle evaluation

For compensated networks with a pulsing facility, the pulse-based fault location algorithm with angle evaluation can be used. By considering the phase angle, it is no longer necessary to operate the network in an overcompensated manner, something that above all reduces the burden on decentralised coils.

Intuitive operation via in-built rotary button

The EOR-1D can be completely operated and its parameters set via the rotary button. The display is normally set to standby, that is, switched off. The display can be activated by pressing the rotary button on the front of the device. Once any pending measurements are taken, the statuses and measurement values of the phase conductors and zero-sequence system will be shown. After this, the main menu is reached, where the device can be fully parameterised. Parameters can also be set using a pre-configured file on an SD card.

Thanks to the backup battery, power cuts are no problem

If the supply voltage fails, the EOR-1D display and communication with the EOR-1D will be retained. The easily exchanged backup battery is designed to maintain signalling mode for up to 1,000 h, incl. the Modbus RTU protocol. (No further evaluation of earth faults and short-circuits during restricted signalling mode is possible.)

Modbus-RTU connection

Alongside the EOR-1D’s connection via two freely parameterisable relay contacts and two fixed binary inputs, the indicator can also be joined up via a Modbus RTU connection via RS485. Here, in the standard tab arrangement, all information and reports can be requested and the majority of parameters changed.

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