| Application |
| Power Rating/Size (kVA) |
5, 10, 15, 20, 25, 30, 50 75, 100, 150, 200, 250, 300, 400, 500 - up 2,000 kVA available |
| Phase - Frequency (Hz) |
Single phase or three phase - 50 or 60 Hz |
| Input/Output Voltages |
120, 208, 220, 240, 380, 400, 440, 480, 600 typical. Contact factory for other voltages |
Any combination of step-up or step-down voltages up to 600v are available |
| Connections |
Delta input / Wye output standard – contact factory for other connection options |
| Cable Entry |
Side, back, top bottom, depending on enclosure type – contact factory for details |
| Regulation/Operating Characteristics |
| Standard Regulation |
+10%/-25% input voltage range with output voltage regulated to ±3% of nominal |
| Optional Regulation |
±10% input voltage range with output voltage regulated to ±2% of nominal |
| Regulation Variation |
None – regulation constant for 0 to 100% load and any load power factor |
| Overload/Inrush Capability |
6000% -1 cycle, 1000% - 1 second, 500% - 5 seconds, 200% - 1 min. ; 1000% fault clearing |
| Minimum Load |
No minimum load or part load limitations |
| Load Power Factor |
No limitations, compatible with all load types |
| Tap Switching |
No load current interruption or waveform distortion on switching at any load or power factor |
| Zero Crossing Sensitivity |
Tap switching not dependent on determining load current zero crossing |
| Harmonic Distortion |
No distortion added at any load or power factor |
| Response Time |
1 cycle typical regardless of load or load power factor |
| Efficiency |
97% typical (autotransformer option 99%) |
| Operating Frequency |
±3% of nominal frequency |
| Noise Suppression/Load Protection |
| Noise Attenuation |
150 dB at 100 kHz common mode; 65 dB at 100 kHz normal mode (excluding autotransformer) |
| Surge Suppression |
Included, complies with ANSI/IEEE C62.41 |
| Input Circuit Breaker |
Included, standard |
| Failsafe Electronic Bypass |
Auto-actuation on high temperature, over-current, component failure with no loss of load |
| Construction |
| Technology |
Electronically-controlled tap switching series transformer design |
| Switching Semiconductors |
Non-full power semiconductors – individual SCRs are not required to carry full unit current |
| Controls |
Microprocessor-based control |
| Cooling |
Natural convection, no cooling fans used |
| Isolation Transformer |
Shielded; meets ANSI specs |
| Enclosure |
NEMA 1 standard |
| Backlit LCD Display |
Phase regulation and status indicator |
| Environmental Requirements |
| Audible Sound Level |
Meets NEMA standards |
| Temperature - Humidity |
Ambient 32 to 104°F (0 to 40°C) – Relative humidity 0-95% non-condensing |
| Operating Altitude |
0 to 10,000 ft (3000m) |
| Common Options |
| Instrumentation |
Ammeter, voltmeter, power monitor with or without Modbus® communications capability |
| Adjustable Output Voltage |
Manually adjustable output voltage setpoint (approx. ±10% of nominal voltage) |
| Maintenance Bypass |
Manual mechanical bypass to isolate unit |
| Autotransformer |
Autotransformer (non-isolated secondary) in lieu of isolation transformer |
| Enclosures |
Enclosures NEMA 12, NEMA 3R, etc. up to stainless steel NEMA 4X available |
| Listings |
cULus available on common models - contact factory for specifics |
