Industry
Commercial and Industrial
Schools and Universities
Healthcare and Hospitals
Hotels and Casinos
Military Installations and Vessels
Mission-Critical Facilities
Schools and Universities
Because schools and universities remain lightly occupied for extended periods of time, ultra-efficient transformers with low core losses provide a unique opportunity for significant energy savings. For this reason, ASHRAE has recommended ultra-efficient transformers that meet DOE CSL 3 efficiency requirements. PQI’s e-Rated® transformers exceed ASHRAE requirements and offer the most energy savings with the lowest cost.
In addition to our e-Rated® transformers, PQI’s harmonic mitigating Distribution TransFilters™ are essential for subsystems with high concentrations of nonlinear loads, such as computers, lab equipment, or electronic lighting ballasts.
Standard Products
| PQI Product |
Description | Benefits within Schools and Universities |
| EY (e-Rated®) | Ultra-efficient transformer | – Low first cost – Ultra-low excitation (core) losses reduce power costs |
| DV Distribution TransFilterTM | Harmonic mitigating transformer | – Reduces power costs – Reduces penalty losses due to harmonic currents – Reduces transformer heating and A/C loading – Reduces THDv to less than 5% at nonlinear loads or motor drives – Reduces losses in the loads, thereby reducing A/C requirements – Improves switch-mode power supply’s ‘ride-through’ capability – Balances primary phase currents – Assures system compatibility with sensitive electronic loads – Capable of developing 12-, 18-, 24-, and 36-pulse primary systems |
Specialty Products
| PQI Product |
Typical Application | Additional Benefits within Schools and Universities |
| DD | Motor drive loads | – Provides isolation from upstream transients – Eliminates phase-to-ground voltage excursions at the motor drive |
| Z Filter (I0 Filter & Mini-Z) |
High K-Factor loads (l0 Filter) Load-end of branch circuits (Mini-Z) |
– 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 (& branch circuits for Mini-Z) |
