Arc Suppression Coil Earthing

Arc suppression coil winding is the arrangement of a magnetized iron core section inside the arc suppression coil, which changes the magnetic flux of the iron core by applying DC excitation current, thereby achieving continuous and adjustable inductance.

The compensation adjustment method of the device belongs to the random regulation type, which monitors and calculates the current of the power network when single-phase grounding and arc suppression coil occur. When the single-phase grounding fault occurs, DC excitation current is applied to change the magnetic resistance of the core, and the reactance value is adjusted at the speed of millisecond, and the compensation current is output.

Biasing arc coil is full static structure, no internal components, no contact, large adjustment range, high reliability, fast adjustment speed (millisecond order). The offset magnetic arc-extinction coil adopts the dynamic compensation mode to avoid the tuning point and does not produce series resonance. When the  grid is running normally, the arc suppression coil is tuned away from the resonance point without applying the excitation current.When single-phase grounding occurs in the power grid, immediately adjust the arc suppression coil to achieve the best compensation state.

1. Applicable voltage levels: 6KV, 10KV, 35KV, 66KV

2. Rated frequency: 50Hz

3. Compensation adjustment method: random adjustment

4. Residual current ≤ 5A during single-phase grounding fault

The complete set of bias magnetic arc suppression coil device generally consists of grounding transformer, bias magnetic arc suppression coil body, microcomputer controller, control screen, current transformer, voltage transformer, lightning arrester, isolation knife switch, etc.: 6kV and system control cabinet, without smoothing reactor: 35kV and 66kV system control cabinet, with smoothing reactor. The neutral point arc suppression coil compensation system of the generator does not require the addition of a grounding transformer. If the 35kV and 66kV systems have a neutral point, there is no need to add a grounding transformer.

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