Scope of Application

TXK-B is suitable for small current grounding substation systems with various voltage levels ranging from 6KV to 35KV.

Working principle

arc grounding

When the system experiences arc grounding, the intelligent controller quickly sends a command to close the corresponding phase's vacuum contactor;

If the intelligent controller is set to an automatic recovery state, the device will automatically recover according to the user's set time, open the grounding contactor, or choose the automatic mode to use the action immediately after the action is restored, and the device will automatically switch to manual recovery;

The device records various parameters at the time of the fault;

The device emits an alarm signal.

Metal grounding

When the system experiences metal grounding, the intelligent controller selects to close the contactor or only sound an alarm according to user requirements;

If the contactor is closed, the action logic will be the same as arc grounding;

The device simultaneously emits an alarm signal.

PT disconnection

When the system experiences PT disconnection, the intelligent controller sends an alarm signal.

Main functions

The device can quickly and reliably operate when the system experiences arc grounding, converting the arc grounding phase into high-frequency damping grounding;

After arc grounding, the recovery method of the device can be flexibly set: manual recovery, delayed automatic recovery, and automatic conversion to manual recovery after two actions can be achieved. The delay time and recovery method can be set according to on-site requirements;

● System overvoltage protection function;

Intelligent harmonic elimination function can eliminate resonance from 0-300Hz, and the harmonic elimination component adopts the constant current principle;

Intelligent line selection function (optional)

When the system malfunctions, the device can record the data at the moment of the malfunction, which facilitates the analysis of the cause of the accident;

After the arc grounding action, the device can record and store the instantaneous capacitance current value of the grounding system for system analysis;

The device has the functions of background time synchronization and parameter modification, which can achieve remote control and signal reset, and is practical for unmanned substations;

The device provides RS485 communication mode, standard MODBUS RTU protocol, and easy networking.