medium voltage filter capacitor

Medium Voltage Filter Capacitor - Superior Power Quality Solutions

Product Introduction

When your electrical system demands exceptional power quality and harmonic control, our medium voltage filter capacitor delivers unmatched performance. Designed specifically for electrical networks operating between 1kV and 35kV, this advanced medium voltage filter capacitor features reinforced dielectric strength and superior thermal management capabilities. Unlike standard power factor correction capacitors, our solution functions as a critical component in L-C filter circuits, effectively addressing harmonic mitigation and resonance prevention in industrial applications.

Our advanced capacitor technology solves critical industry challenges. You'll experience significant reduction in Total Harmonic Distortion (THD) from non-linear loads. Your equipment operates more efficiently while meeting strict utility regulations like IEEE 519 and IEC 61000.

Technical Specifications

Main Features and Advantages

Advanced Dielectric System

Your power system benefits from our all-film technology using double-hazy polypropylene film. This ensures extremely low dielectric losses and high partial discharge inception voltage.

Superior Impregnation Technology

We fill each unit with high-grade, biodegradable synthetic oil under high vacuum. This eliminates air voids and provides excellent heat dissipation properties.

Robust Construction

Our capacitors withstand continuous currents up to 1.50x nominal current and handle transient overvoltages significantly better than standard units.

Internal Protection

Each element includes internal fuses for enhanced reliability. If one element fails, only that section isolates while your system continues operating.

Practical Applications

Steel Manufacturing

In electric arc furnace environments, you face rapid load fluctuations and massive harmonic currents. Our medium voltage filter capacitor stabilizes bus voltage instantly while filtering harmful harmonics, improving your melt efficiency.

Renewable Energy Systems

Wind and solar substations require strict power factor control. You can manage switching noise from IGBT inverters while providing necessary reactive power without creating grid resonance.

Railway and Traction Systems

Railway substations face unique challenges with single-phase loads. Our ruggedized capacitors compensate for inductive motor loads and filter traction rectifier harmonics, ensuring reliable train operation.

How It Works

Your filter capacitor operates within tuned or detuned L-C circuits. In tuned applications, it absorbs specific harmonic frequencies like 5th, 7th, or 11th harmonics. For detuned configurations, it prevents resonance between your grid and power correction system.

The series reactor creates voltage rise across capacitor terminals. Our units handle this additional stress through proper voltage rating selection, typically 20-30% above system nominal voltage.

Manufacturing Excellence

We maintain strict quality control following IEC 60871 and IEEE 18 standards. Every unit undergoes comprehensive testing including routine sealing tests, dielectric loss measurement, and terminal-to-terminal voltage verification.

Our manufacturing process includes specialized impulse testing to ensure your capacitors survive lightning strikes and switching surges. Each unit meets Basic Impulse Level requirements of 75kV or 95kV BIL.

Quality assurance includes hermetic seal verification at elevated temperatures and discharge device testing to ensure maintenance safety.

Why Choose Us

Xi'an Xidian Medium and Low Voltage Electric Co., Ltd. brings decades of expertise in power distribution equipment. We're certified under ISO9001, ISO14001, and OHSAS18001 management systems.

Our comprehensive product range covers rated voltages from 0.4kV to 40.5kV with currents up to 4000A. Products meet requirements for installations up to 4000m altitude.

We provide complete system solutions beyond individual components. Your project benefits from our integrated approach covering design, manufacturing, installation, and ongoing support.

FAQ

Q: What's the difference between standard and filter capacitors?

A: Filter capacitors handle higher voltages and currents than system nominals, withstanding harmonic voltage addition and current heating effects that would damage standard units.

Q: How do you select voltage rating for detuned circuits?

A: Series reactors cause voltage rise across terminals. For 11kV systems with 7% detuned reactors, we specify 12kV or 13.2kV rated capacitors.

Q: Are outdoor installations possible?

A: Yes. We select appropriate bushing creepage distances (25-31mm/kV) based on pollution levels and use weather-resistant stainless steel construction.

Q: What's the expected lifespan?

A: Under proper operating conditions, design life reaches 15-20 years with over 100,000 operating hours.

Q: Why choose internal fuses?

A: Internal fuses provide element-level protection. Single element failure isolates only that section while maintaining overall capacitor operation.

Contact Us

Ready to improve your power quality with our advanced capacitor solutions? Our technical team stands ready to discuss your specific requirements and provide customized recommendations.

Contact our specialists today at serina@xaxd-electric.com for detailed technical consultation and competitive pricing. We'll help you select the optimal medium voltage filter capacitor configuration for your application needs.