Harmonic Filter Switchgear
-- Steady & Reliable Manufacturer --
Product Overview
Harmonic Filter Switchgear is a specialized solution designed to mitigate electrical "noise" caused by non-linear loads such as variable speed drives and heavy power electronics. At DSJ Electrical, our filter switchgear combines reactors and capacitors to create a low-impedance path for specific harmonic frequencies (e.g., 5th, 7th, 11th), effectively shunting them away from the main grid. We offer both Passive and Active Harmonic Filter (AHF) units. Our gear is engineered to prevent overheating in transformers and motors while significantly improving the overall Power Factor. By maintaining a clean sine wave, DSJ Harmonic Filter Switchgear ensures your facility complies with utility regulations (like IEEE 519) and prevents the premature failure of sensitive digital equipment.
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Medium-Voltage Switchgear
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Electrical Partner
At DSJ, we transform complexity into reliability. With 42+ years of expertise in power distribution systems, our turnkey service integrates every phase – from regulatory compliance to final commissioning – ensuring seamless project execution for global clients. Whether it is the initial design or the final handover, we will strictly control every detail to ensure that the final delivered products perfectly meet your expectations. With us, you can focus on your core business with peace of mind, knowing that your project is in the hands of professional and reliable partners.
Introduction
The Harmonic Filter Switchgear line from DSJ Electrical Co., Ltd is the "Grid Purifier" for the modern industrial age. In an environment saturated with VFDs and LED lighting, harmonics are a silent threat that cause equipment to run hot and fail early. Our introduction of this series focuses on "Signal Integrity" and "Thermal Ruggedness." We utilize "High-Q" reactors with iron cores and temperature sensors to ensure that our filters can handle the high currents associated with harmonic resonance without saturation.
Innovation at DSJ involves "Intelligent Resonance Detection." Our filter panels can be equipped with real-time analyzers that monitor Total Harmonic Distortion (THD) and automatically adjust the filter steps to match changing load conditions. We prioritize "Safe Failure Modes," including internal fuse protection for every capacitor element. At DSJ, we provide custom-tuned solutions based on your specific site’s harmonic profile, ensuring that we target the exact frequencies causing issues in your network. Choosing our harmonic filter gear means choosing a cooler, more efficient, and more reliable power system. We provide the "Quiet Strength" that allows your sophisticated machinery to perform at its peak without interference.
Applications
- Steel & Paper Mills: Filtering noise from large variable frequency drives.
- Data Centers: Ensuring clean power for high-density server environments.
- Water Treatment: Managing harmonics from high-capacity intake pumps.
- Commercial HVAC: Protecting chillers and fans in large-scale buildings.
- Renewable Parks: Cleaning the output of solar and wind inverters.
- Oil & Gas: Mitigating harmonics in remote drilling and pumping sites.
Specifications
| Technical Category | Filter Switchgear Spec |
|---|---|
| Voltage Range | 400V to 35kV |
| Filter Type | Passive (Detuned/Tuned) or Active (AHF) |
| THD-i Reduction | Down to < 5% |
| Tuning Frequency | 3rd, 5th, 7th, 11th, 13th (Customizable) |
| Protection Class | IP31 / IP42 / IP54 |
| Cooling | Forced Air or Liquid Cooled (High Capacity) |
| Standard | IEEE 519 / IEC 61000-3-2 |
Why Choose Us
DSJ Electrical provides "Acoustic-Grade" electrical purity. We don't just sell off-the-shelf filters; we provide an engineering service that includes harmonic modeling of your facility to ensure the hardware we provide solves your specific power quality problems permanently.
- Q: What is the difference between active and passive filters?
- A: Passive filters use fixed components; Active filters use power electronics to cancel harmonics in real-time.
- Q: Will this improve my power factor?
- A: Yes, harmonic filters naturally provide reactive power compensation, improving your PF.
Advantages
- Equipment Protection: Reduces heat in transformers and motors.
- Utility Compliance: Meets strict IEEE 519 harmonic limits.
- Improved Efficiency: Lowers system losses and reduces energy bills.
- Digital Stability: Prevents "glitches" and resets in PLC/HMI systems.
- Flexible Design: Modular steps allow for easy future expansion.
- Real-time Analysis: Integrated metering for continuous THD tracking.
Standards & Certifications
Our gear is compliant with IEEE 519 and IEC 61000. We hold CE and ISO 9001 certifications. Each unit undergoes a full harmonic injection test to verify suppression levels before shipping.
Payment & Shipping
Filter gear is shipped in reinforced sections with sensitive capacitors and reactors securely braced. Lead times: 6-9 weeks due to custom tuning.
DSJ Story
about DSJ
Building Power, Building Trust
Founded in 1983, DSJ is a leader in China's power distribution equipment. Headquartered in Beijing as the top-selling enterprise, we integrate manufacturing with trade and maintain full in-house capabilities in R&D, production, and sales. This enables efficient fulfillment of custom orders with industry-leading speed.
As a producer of distribution system, transformer, generator and photovoltaic products exceeding Chinese/international standards, DSJ supplies medium/low-voltage electrical equipment, and PV systems. For over four decades, we have delivered high-safety electrical solutions globally to public infrastructure, corporations, and households – achieving the industry's lowest return rate.
Committed to "meeting diverse needs through quality", DSJ leverages expert teams to provide one-stop services: pre-sales consultation & customization, flexible logistics/payment options, and reliable maintenance – ensuring seamless producer-maintainer-customer collaboration.
+86 18513032986 
FLC Center, Chaoyang District, Beijing, China