Specifications

MGE UPS SYSTEMS - Galaxy 3000 Specification 4 Effective: September, 2006
B. AC Input Characteristics
1. Voltage: 208, 220, 480 or 600 VAC, ±15%, 3 phase, 3 wire plus neutral plus ground
2. Frequency: 60 Hz (+8% / - 25%)
3. Power Factor: < .99 lagging
4. Total Harmonic Distortion: Less than 3% at full load
5. Power walk-in: 0 to 100% over a 10-second period
6. Inrush Current: Less than nominal input current for less than one cycle
7. Input Surge Protection: The UPS is equipped with input MOVs to withstand surges per IEEE 587-
1980/ANSI C62.41
C. AC Output Characteristics
1. Voltage: 208, 220, 480 or 600 VAC, ±15%, 3 phase, 3 wire plus neutral plus ground
2. Frequency: 60 Hz +1% (or selectable up to 4% ), 60 Hz + 0.1% when free running
3. Voltage Regulation: + 1.0% for balanced load
+ 1.75 for 50% unbalanced load
+ 2.5% for 100% unbalanced load
4. Voltage Distortion: Maximum 2% total (THD) and 1% any single harmonic on 100% linear loads
5. Voltage Transient (Step Load) Response: + 3% for 50% step load change
+ 5% for 100% step load change
+ 1% for loss or return of AC input power or
manual transfer at full load
6. Voltage Recovery Time: Return to within 1% of nominal value within 16.67 milliseconds (one cycle)
7. Phase Angle Displacement: 120° + 1° for balanced load; 120° + 3° for 100% unbalanced load
8. Non-Linear Load Capability: Output voltage total harmonic distortion shall be less than 3% when
connected to a 100% non-linear load with a crest factor not to exceed 3%.
9. Slew Rate: 1 Hz/second maximum (or selectable up to 2.0 Hz/sec)
10. Power Factor: 0.8 at the rated volt-amperes (VA)
11. Inverter Overload Capability: 120% of rated load for 1 minute
145% of rated load for 30 seconds
12. Bypass Overload Capability: >212% for one cycle; > 150% for 30 seconds
D. Battery
1. Battery Voltage: 198 VDC minimum before cutoff; 240 VDC nominal, 277 VDC maximum
maintenance charge voltage; 300 VDC equalization voltage
2. Maximum DC Current: Maximum DC current at cutoff voltage will be [ ] A.