Power Capacitor

High-Efficiency Self-Healing Low Voltage Power Capacitors

Optimize your electrical grid efficiency with the XUCKY Cylinder Self-Healing Shunt Power Capacitor. Engineered for 50Hz/60Hz low-voltage systems, this national recommended energy-saving product is the cornerstone of effective power factor correction. Whether deployed in localized field compensation or centralized automatic compensation cabinets, XUCKY capacitors significantly reduce reactive power loss and stabilize voltage quality.

Built with a premium metallized film core and housed in a robust cylindrical aluminum case, these capacitors feature advanced self-healing technology that ensures long-term reliability even under fluctuating load conditions. Compliant with GB/T 12747 and IEC 60831-1/2 standards, the XUCKY series offers a safe, eco-friendly (pollution-free dielectric oil), and high-performance solution for modern industrial and commercial power systems.

1. Advanced Self-Healing Core Technology

The Feature: The capacitor core utilizes high-quality metallized film.

The Benefit: In the event of a minor dielectric breakdown, the energy vaporizes the metallization around the fault instantly, isolating the defect without causing a short circuit. This "self-healing" capability dramatically extends service life and reduces maintenance downtime compared to traditional foil capacitors.

Performance Metric: Extremely low power loss with tanδ ≤ 0.1%, ensuring minimal heat generation and maximum efficiency.

2. Robust & Safe Construction

Housing: Encased in a durable cylindrical aluminum case that provides excellent heat dissipation and mechanical protection.

Eco-Friendly Dielectric: Immersed in non-polluting dielectric oil, ensuring no negative social or environmental impact in case of leakage.

Safety First:

Top: Features an anti-touch terminal block to prevent accidental electric shock during maintenance.

Bottom: Equipped with M12 or M16 grounding bolts for secure installation.

Internal Discharge: Built-in discharge resistors automatically reduce residual voltage to <50V within 3 minutes after power cut-off, ensuring safety for personnel before re-entry or maintenance.

3. Superior Electrical Durability

Engineered to withstand harsh grid conditions, including over-voltage and harmonics:

Over-Voltage Tolerance: Capable of continuous operation at 1.1x rated voltage (up to 8 hours/day) and surviving transient spikes up to 1.3x rated voltage for 1 minute.

Current Handling: Designed to operate safely up to 1.3x rated current continuously. Even with the combined effects of over-voltage, capacitance tolerance (+10%), and harmonics, it can withstand peak currents up to 1.43x rated current.

Dielectric Strength: Tested rigorously at 2.15x rated voltage for 5 seconds without puncture or flashover.

4. Installation & Operational Guidelines (Critical for Trainers)

To maximize lifespan and safety, adhere to the following operational protocols:

Re-energization Delay: After power cut-off, the capacitor must wait until the residual voltage drops to 10% of rated voltage (approx. 200 seconds) before re-input.

Recommendation: Use a power controller with a specific "input lock-out time" function. If using a standard controller, external fast-discharge equipment is mandatory.

Switching Compatibility: Flexible design allows usage with contactors (same power factor input) or thyristor (chip) switches without limitation.

Connection: Three-phase units come pre-wired in Delta (△) configuration internally.

Environment: Must be installed in well-ventilated areas. Sealed enclosures without airflow are strictly prohibited to prevent overheating.

Temperature Rating (Class C): Max ambient temp 50°C (24h avg ≤40°C, yearly avg ≤30°C). Min temp -25°C.

Technical Specifications Summary