High-Performance Reactive Power Compensation & Voltage Stability Solutions

I. Product Overview

The Medium Voltage (MV) Shunt Capacitors are engineered for power quality improvement in electrical networks ranging from 3.3kV to 35kV. By compensating for reactive power, these units increase energy efficiency, stabilize system voltage, and reduce transmission losses.

Designed with advanced All-Film technology and eco-friendly dielectric fluids, our capacitors offer exceptional reliability and an operational lifespan exceeding 20 years, even under harsh environmental conditions and harmonic stress.

II. Key Technical Features

 1. Advanced Dielectric & Materials

All-Film Insulation:  We utilize premium bi-axially oriented polypropylene (BOPP) film, which provides high dielectric strength and extremely low thermal dissipation.
Folded Aluminum Foil Electrodes:  To minimize the risk of Partial Discharge (PD), electrode edges are precision-folded. This reduces electric field concentration at the foil edges, significantly extending the capacitor's life.
Environmentally Friendly Impregnant:  Filled with a non-toxic, biodegradable synthetic liquid (PCB-free) with excellent cooling and flash-point properties. It ensures stable performance at temperatures as low as.

 2. Superior Protection Systems

Internal Fuses (Optional):  Each capacitor element is protected by an internal fuse. In the event of an element failure, the fuse isolates the faulty part, allowing the rest of the unit to continue operating safely.
Built-in Discharge Resistors: Integrated resistors ensure the residual voltage drops to below 50V within 10 minutes after the unit is disconnected from the power source, ensuring safety for maintenance personnel.
Pressure Monitoring:   Available with optional pressure-sensitive switches or relief valves to provide an extra layer of protection against internal faults.

3. Robust Construction

Stainless Steel Enclosure:  The casing is fabricated from high-grade 304/316 stainless steel, hermetically sealed via automated TIG welding to prevent leakages.
Corrosion-Resistant Coating:  Finished with a UV-resistant, high-durability paint system tested for 1000+ hours of salt spray resistance, making it ideal for coastal and industrial environments.
High-Quality Bushings:  Porcelain or composite bushings with large creepage distances are used to prevent flashovers in polluted environments.

III. Environmental Adaptability

Temperature Range:  Standard:  -25℃ to 45℃.
Altitude:  Standard up to 2000m. High-altitude versions are available for up to 5,000 m.
Installation:  Suitable for both Indoor and Outdoor applications.

IV. Typical Applications

Utility Substations:  Bulk reactive power compensation at the grid level.
Industrial Plants:  Power factor correction for heavy loads in mining, steel mills, and chemical plants.
Renewable Energy:  Voltage smoothing and harmonic filtering for Wind and Solar farms.
Hard-to-Start Motors:  Providing the necessary reactive start-up current for large MV motors (pumps, compressors, mills).

V. Quality Assurance

Each unit undergoes rigorous routine testing before shipment:

1. Tightness Test:  100% leak testing at elevated temperatures.
2. Voltage Test:  Between terminals and between terminals to case.
3. Capacitance Measurement: To ensure exact kvar output.
4. Discharge Resistor Verification: To guarantee personnel safety.

Ordering Information

To provide the most accurate quote, please specify:

1. Rated Voltage (kV)
2. Rated Output (kvar)
3. Single-phase or Three-phase
4. Internal Fusing preference
5. Installation Environment (Altitude/Temperature/Pollution level)