Products Description
Our arc suppression coil grounding system combines the grounding transformer, arc-suppression coil, controller, sensing circuits, and cabinet equipment. A flexible-grounding design can add a low-resistance branch after the compensation interval.
Technical Principle
The coil provides adjustable inductive current that offsets the network capacitive earth-fault current. By tuning the compensation close to resonance, the residual fault current and arc-restrike probability are reduced.
Product Features
The arc suppression coil grounding system reduces residual current during a single-phase earth fault through resonant compensation. Four adjustment principles allow the design to match different network structures. The flexible-grounding option combines compensation with a timed low-resistance branch. Automatic measurement and tuning support changing network capacitance.
Operating Conditions
Install the product in a clean, ventilated location without corrosive gas, conductive dust, water ingress, severe vibration, or strong impact. Provide reliable protective grounding, maintain the required electrical clearances, and use the rated auxiliary power supply. Confirm ambient temperature, humidity, altitude, enclosure protection, cable routing, and communication conditions before production and installation.
Product Parameters
|
Parameter |
Details |
|
System series |
SW-XH |
|
Adjustment methods |
Turn-adjusted, magnetic-bias, capacitance-adjusted, or phase-controlled |
|
Application condition |
Capacitive current greater than 10 A, as stated in the manual |
|
Compensation interval |
1-10 s before the low-resistance branch is switched in |
|
Resistor exit with reclosing |
Generally within 60 s when reclosing coordination is required |
|
Main grounding equipment |
Grounding transformer plus arc-suppression coil |
|
Control arrangement |
Automatic tuning, measurement, alarm, and cabinet control |
Product Advantages
- The arc suppression coil grounding system reduces residual current during a single-phase earth fault through resonant compensation.
- Four adjustment principles allow the design to match different network structures.
- The flexible-grounding option combines compensation with a timed low-resistance branch.
- Automatic measurement and tuning support changing network capacitance.
Main Applications
The arc suppression coil grounding system is used for distribution networks with significant capacitive earth-fault current and continuity requirements.
It is used in substations, industrial systems, mines, wind farms, and photovoltaic collection networks.
The flexible version suits schemes that coordinate arc suppression, resistance grounding, and reclosing.
Components
|
Part |
Function |
|
Grounding transformer |
Creates the neutral point when the network has none. |
|
Arc-suppression coil |
Compensates the network capacitive earth-fault current. |
|
Controller and sensors |
Measure network conditions and regulate compensation. |
|
Optional resistor branch |
Provides timed low-resistance grounding in a flexible scheme. |
FAQ
Q: What information is needed for model selection?
A: Confirm system voltage, capacitive current range, required adjustment method, neutral-point arrangement, and fault-clearing logic.
Q: What should be checked before installation?
A: Verify the grounding transformer, coil, control cabinet, primary connections, and secondary wiring against the approved scheme.
Q: How can the device or system be integrated?
A: The controller can exchange measurement, alarm, and operating status with the station control system.
Q: Which options should be confirmed before production?
A: Confirm tuning range, flexible-grounding sequence, resistor duty, reclosing coordination, and cabinet arrangement.
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