Specifications include, but are not limited to: Unit Operating Requirements:
1. The VFC shall accept nominal plant power of 480 VAC at 60 Hertz.
2. Input AC Voltage Tolerance: Plus 10 and minus 15 percent of VFC input voltage rating.
3. Input AC Voltage Unbalance: Not exceeding 5 percent.
4. Input Frequency Tolerance: Plus or minus 3 percent of VFC frequency rating.
5. Minimum Efficiency: 97 percent at 60 Hz, full load.
6. Minimum Displacement Primary-Side Power Factor: 95 percent under any load or speed