The ULTRA-K Series 600K-he Three Phase (15 kVA – 500 kVA) is a high-efficiency, K-rated power conditioning transformer engineered to protect sensitive electronic loads while reducing operating costs. Exceeding DOE 2016 efficiency standards, it delivers superior noise attenuation and transient voltage suppression to safeguard mission-critical systems. With multiple K-factor ratings (K4, K7, K13, K20), it handles harmonic-rich, non-linear loads common in today’s environments. Durable copper-wound construction and flexible voltage/output options make it ideal for data centers, healthcare, education, retail, and industrial facilities requiring reliable, clean power.
Specifications
- Efficiency: U.S.: Meets and exceeds DOE 2016 minimum efficiency standards (DOE 10 CFR Part 431). Canada: Meets and exceeds CSA Standard C802.2-12.
- Voltage Compensation Taps: Full capacity above and below nominal with multiple field-selectable taps.
- Output Impedance: 2% – 3.5% typical.
- Output Distortion: Less than 1.0% THD added under linear load.
- Load Regulation: 2% typical, no load to full load.
- Overload Capacity: Up to 500% for 10 seconds; 1000% for 1 cycle.
- Isolated Neutral: Establishes a new neutral-to-ground bond on the transformer’s output.
- Common Mode Noise Attenuation: 126 dB (standard double shielding); 146 dB (optional triple shielding).
- Transverse Mode Noise Attenuation: 3 dB down at 10 kHz, decaying 20 dB per decade; 40 dB with “SPD + High Frequency Filter” option.
- Operating Temperature: -25°C to +40°C
- Audible Noise: 45 – 55 dBA at 1 meter (depending on kVA size).
- Neutral Size: Twice the ampacity of the secondary phase conductor (on three-phase models).
- Temperature Rise: 135°C rise above ambient under non-linear loading, per UL 1561 standard.
- Certifications: UL 1561 Listed, labeled for operation at or below a specific K-factor rating. C-UL Listed to CSA C22.2, No. 47-13.
- Three-Phase Sizes: 15 kVA, 30 kVA, 45 kVA, 75 kVA, 112.5 kVA, 150 kVA, 225 kVA, 300 kVA, 500 kVA.



