Passive Harmonic Filters
2. Cost-Effectiveness
3. Power Factor Correction
4. High Efficiency and Robust Performance
5. High Current Handling and Capacity
Passive Harmonic Filters
PHF is kind of low-pass harmonic filter to help improving harmonic currents, so that the total THDI and THDV can meet the limits of IEEE519,and the power factor can reach above 0.95 at 100% loading. There is no resonance between PHF and system power. The input capacity can be switching in different groups according to the load request, to avoid the over compensation and under compensation of power factor.
Key Features & Benefits:
Instant IEEE 519 Compliance:
LTEC passive harmonic filters help reduce your total harmonic current distortion (THDi) to below 5%, meeting the strictest power quality requirements.
Intelligent Power Factor Correction:
Even under full load conditions, these filters optimize your power factor to over 95%, reducing reactive power penalties and freeing up system capacity.
Modular Versatility:
Our harmonic filters feature a modular design with IP00 (open type) models for easy integration into cabinets, and also offer enclosures with IP20 to IP54 protection ratings to suit more demanding industrial environments.
Energy Efficiency (>99%):
Utilizing precision design with iron cores and high-purity copper windings, these filters ensure extremely low insertion loss and heat dissipation, providing ultra-high energy efficiency.
Applications of Passive Harmonic Filters




1. Industrial Motor & Drive Systems
2. Renewable Energy Systems
3. Commercial & HVAC Systems
4. Data Centers & IT Infrastructure
5. Oil & Gas / Mining Operations
6. Healthcare & Laboratories
Passive Harmonic Filters Technical Specifications
|
Technical Specification |
Details |
|
Voltage Range |
208V–13.8kV (low/medium voltage) |
|
Frequency |
50/60 Hz (±10%) |
|
Tuned Frequencies |
Customizable (e.g., 250 Hz for 5th harmonic) |
|
Efficiency |
>98% |
|
Installation |
Parallel connection to the load/grid |
|
Standards Compliance |
IEEE-519, EN61558-2-20,EN60076-6 |
Why Choose LTEC's Passive Harmonic Filters?
LTEC – Powering Your Systems with Innovation!
Superior Harmonic Mitigation
THD Reduction: Achieves sub-8% Total Harmonic Distortion (THDi/THDv) for compliance with IEEE 519 and IEC 61000-3-6 standards, similar to high-performance filters like KEB's Z1 series.
Targeted Filtering: Uses single-tuned, double-tuned, or C-type high-pass designs to eliminate specific harmonics (e.g., 5th, 7th, 11th).
Motor and Equipment Protection
Reduces dV/dt Stress: Minimizes voltage spikes and bearing currents in motors, extending lifespan.
Prevents Overheating: Lowers harmonic losses in transformers and capacitors, as demonstrated in HVDC applications.
Energy Efficiency & Cost Savings
Reactive Power Compensation: Improves power factor (up to 0.95+) while filtering harmonics, reducing utility penalties.
Passive Design: No active components or external power required, ensuring low maintenance and high reliability.
Robust Industrial Design
Delta-Configured Capacitors: Enhances phase symmetry and protects against voltage surges during phase failures, a feature highlighted in KEB's filters.
Modular Sizing: Available in Compliance & Certifications.
Compliance & Certification
Likely adheres to UL, CE, and CCC standards, ensuring global market access and safety, akin to Schaffner's EMC filters.
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