Harmonic Mitigating Transformers
Two Rivers Power is the exclusive representative for PQI harmonic mitigating transformers in west Tennessee, north Mississippi and Arkansas. Call or email us to get a quote, run a ROI calculation or a specification review.
PQI has been on the leading edge of harmonic mitigation solutions longer than any other manufacturer in the industry. Our products are manufactured to the highest quality standards (ISO 9001), and our product designs have been proven highly effective in real-world scenarios. For these reasons, many engineers insist upon PQI for the most effective harmonic mitigation solutions.
Our Type DY and Type DV Distribution TransFilters™ provide flexibility to engineer almost any solution; however, we also offer specialty harmonic mitigation transformers and filters designed to offer distinct advantages in certain applications.
| PQI Product | Typical Application | Typical Industry | Additional Benefits Within Specialty Application |
| DY | Medium K-Factor loads | All | N/A |
| DV | High K-Factor loads | All | – Capable of developing 12-, 18-, 24- and 36-pulse primary systems |
| DD | Motor drive loads | All | – Provides isolation from upstream transients – Eliminates phase-to-ground voltage excursions at the motor drive |
| MY | 240V motor loads | Industrial | – Resolves failure problems that result when 230V and 240V motor are supplied by conventional 208V sources – Eliminates motor over heating |
| SY | 240V server loads | Data Centers | – Maintains voltage bandwidth required by rack-mounted servers – Reduces servers’ load current by 15% and l2R losses by 33% |
| SYV | 240V and 120V server loads | Data Centers | – Provides optimum voltage for 240V and 120V server loads – Reduces 240V server load current by 15% and l2R losses by 33% when compared to a conventional 208V source |
| RV | Remote load centers | Data Centers | – Eliminates zero-sequence harmonic current on the neutral conductor of the feeder circuits that supply remote load centers |
| GY | 240V gaming machine loads | Casinos | – Maintains voltage bandwidth required by gaming machines – Reduces servers’ load current by 15% and l2R losses by 25% |
| Z Filter (l0 Filter & Mini-Z) |
High K-Factor loads (l0 Filter) Load-end of branch circuits (Mini-Z) |
Casinos, Call Centers, Commercial Buildings |
– Reduces neutral-to-ground voltages to <4V at nonlinear loads (<1V for Mini-Z) – Increases general purpose (K-1) transformer capacity by up to 54% – Protects upstream neutral conductor – Increases feeder and bus capacity – Balances feeder and bus phase currents (and branch circuit for Mini-Z) |
All PQI Distribution TransFilters™ result in:
- Reduced power costs
- Reduced penalty losses due to harmonic currents
- Reduced transformer heating and A/C loading
- Reduced THDv to less than 5% at nonlinear loads or motor drives
- Reduced losses in the loads, thereby reducing A/C requirements
- Improved switch-mode power supply’s “ride-through” capability
- Balanced primary phase currents
- Assured system compatibility with sensitive electronic loads
