Harmonic Mitigating Transformers
2.Zero Neutral Overheating:200% rated neutral bus prevents fire risks and downtime.
3.Lower Energy Bills:Reduces core losses and cooling costs significantly.
4.Reclaim System Capacity:Frees up panel space and prevents unnecessary upgrades.
5.Stable Voltage Output:Protects sensitive equipment from voltage drops.
6.Less EMI Noise:Prevents data corruption and false breaker trips.
7.Extend Equipment Life :Stops harmonic heat from degrading motors and UPS.
8.Fully Compliant :Meets IEEE 519 and ANSI/IEC power quality limits.
What Makes Our HMT Different?
Product Feature
Active Harmonic Elimination
We don't just absorb harmonics; we actively cancel them. Our design eliminates third harmonics right at the secondary winding, preventing dirty power from damaging your upstream distribution system.
200% Rated Neutral Bus
Non-linear loads push massive current onto the neutral wire. Our oversized neutral busbar is rated for 200% capacity, safely handling superimposed currents to prevent overheating and eliminate fire hazards.
100% True Capacity
Unlike standard K-rated transformers that require derating, our HMTs handle harmonic heat efficiently. You get 100% true rated capacity operation without needing to oversize the unit.
Superior Voltage Stability
We deliver a cleaner, highly stable power supply that protects sensitive downstream equipment and extends its operational lifespan.
Products Specifications
| Feature | Specification / Detail |
| Product Type | Harmonic Mitigating Transformer (HMT) |
| Phase Shifting | Custom (e.g., 0°, ±15°, ±20° for 12/18 pulse) |
| Harmonic Reduction | >95% Triplen (3rd, 9th, 15th); >85% 5th & 7th |
| Neutral Rating | 200% of Phase Current (Standard) |
| Insulation Class | Class 220 (C) / 220°C Rise |
| Cooling Method | Air Cooled (AN/AF) |
| Core Material | High-Grade Silicon Steel / Amorphous Metal (Optional) |
| Winding Process | Vacuum Pressure Impregnated (VPI) |
| Impedance | Customized to limit fault current |
| Standards | ANSI/IEEE C57.12.00, IEC 60076 |
Applications of Harmonic Mitigating Transformers / HMTs
1.Data Centers & IT Infrastructure
The Challenge: UPS systems and server farms generate massive neutral currents and voltage distortion.
Our Solution: HMTs block triplen harmonics at the source, preventing overheating in PDU racks and ensuring zero downtime for your critical IT loads.
2. Manufacturing & VFD Applications
The Challenge: Variable Frequency Drives (VFDs) and PLCs constantly pump 5th and 7th harmonics back into the grid, causing motor overheating and control glitches.
Our Solution: Our HMTs isolate these non-linear loads, protecting sensitive robotic controllers and extending the lifespan of your motors.
3. Healthcare & Medical Facilities
The Challenge: Dirty power causes image artifacts in MRI/CT scans and unpredictable behavior in life-support systems.
Our Solution: We provide ultra-clean, stable voltage to surgical suites and diagnostic labs, ensuring 100% equipment accuracy and patient safety.
4. Commercial Buildings & Smart Offices
The Challenge: Hundreds of LED lights, computers, and HVAC drives create a "harmonic soup" that trips breakers and wastes energy.
Our Solution: Reclaim your panel capacity. Our transformers safely handle the combined harmonic load, preventing neutral fires and reducing cooling costs.
5. Precision Research & Labs
Our Solution: Total electromagnetic isolation. We guarantee a pristine power environment where data integrity is never compromised.
Why Choose LTEC?
Patented Core Tech That Doesn't Burn Out
Standard cores saturate and overheat under harmonic stress. Our proprietary Multi-Path Core uses a low-reluctance magnetic circuit. It stays cool, stable, and reliable even when your system is pushed to the limit.
True Harmonic Cancellation (Not Just Filtering)
We actively cancel over 95% of triplen harmonics (3rd, 9th, 15th) and reduce 5th/7th harmonics by >85%. Expect a clean secondary THD-I of <3% under standard non-linear loads.s.
Cut Your Energy Bills by Up to 30%
Harmonics waste power. Our premium models use laser-cut amorphous metal cores and VPI windings to drastically reduce no-load and load losses. Lower energy waste means a faster ROI and lower Total Ownership Cost (TOC).
Safety isn't an option. We double-rate our neutral bus and secondary windings to 200% of phase current. Wrapped in a Class 220 (C) insulation system, these units offer a massive thermal safety margin and proven short-circuit withstand capability.
Custom-Built for Your Exact Grid
We offer Engineered-to-Order (ETO) solutions tailored to your needs. Whether you need specific phase shifts (15°, 20°) for 18-pulse systems, special voltages, or integrated passive filters, we build it to fit.
FAQ
Q: What is the difference between a K-Factor Transformer and an HMT?
A: A K-Factor transformer is built to withstand the heat generated by harmonics without burning up. An HMT (Harmonic Mitigating Transformer) goes a step further: it uses phase-shifting to actively cancel the harmonics, preventing them from propagating back to the source. HMTs actually improve power quality; K-Factor units just survive it.
Q: Do I need an HMT if I already have a UPS?
A: Yes. UPS systems are non-linear loads themselves and generate harmonics. Without an HMT or filtering, these harmonics can overheat your backup generators and cause the UPS to switch to bypass mode unnecessarily. An HMT protects the UPS and the equipment downstream.
Q: Can you customize the vector group or phase shift?
A: Absolutely. We offer Engineered-to-Order (ETO) solutions. We can configure specific phase shifts (like 15° or 20°) to support 12-pulse or 18-pulse VFD applications, effectively canceling 5th and 7th harmonics through phase cancellation.
Q: What is the lead time for a customized HMT?
A: Standard configurations usually ship within 4-6 weeks. Complex, high-voltage, or specific impedance designs may take 8-10 weeks. Contact our engineering team for a precise schedule.
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