REX010 HESG324426R0001 HESG324389 ABB Earth fault protection unit

REX010 HESG324426R0001 HESG324389 ABB Earth fault protection unit

REX010 HESG324426R0001 HESG324389 ABB Earth fault protection unit

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The device is equipped with optional impedance method measurement fault location function, which is suitable for locating radiation

Faults in the distribution system. It can be operated in direct grounding and low resistance grounding networks

Row positioning. When the fault current amplitude is the same as or higher than the load current,

It can locate the ground fault in the neutral ungrounded distribution network. Fault location work

The fault type can be identified and the distance to the fault point can be calculated. It can also be estimated that

Barrier resistance value. This estimate can provide the possible fault causes and the distance to the fault point

Accuracy.

Fault recording

The device has fault wave recording function, which can record at least 12 analog quantities and 64 on

Off signal channel. The analog channel can record the waveforms of measured current and voltage, or

Trends.

The analog channel triggers the wave recording function when the measured value is lower or higher than the set value. open

The off signal channel triggers the wave recording power at the rising or falling edge of the on-off signal

Yes.

In the default configuration, the switching signal channel is set to record external or internal devices

Signals, such as start or action signals of the device, external locking or control signals.

The switching value signal used to trigger wave recording can be protection start and action signal, or

And may be an external input signal. Fault information is stored in nonvolatile memory, which can

Upload for subsequent fault analysis.

Event record

The device can store 1024 events with time scale in non-volatile memory for receiving

Set event sequence record (SOE) information. Nonvolatile memory can temporarily power down the device

Can still save the event record. Event records are provided for pre fault and post fault analysis

basis.

The ability of the device to process and store data and events can support the continuous network configuration in the future

Growing demand for information.

The event sequence recording information can be recorded through the user interface on the front panel of the device

Or remotely through the communication interface of the device. You can also use the net

The man-machine interface of page realizes local or remote access.

Fault record

The device can store the latest 128 fault records. Users can use these records

To analyze power system events. Each record contains phase current, differential current and

Braking current, time scale and other information. The fault record can be made by the start signal of the protection module

Or an action signal or both. Available measurement mode packages

Including discrete value (DFT), RMS and peak to peak.

Fault recording starts to store the measured value of the device when any protection function is started.

In addition, the maximum demand current value with time scale needs to be recorded separately. These records are

Stored in non-volatile memory.