Table 1-5. Electrical Performance Characteristic Parameters AC Precise (Class 1)
Characteristic parameter
a.
Voltage characteristics
1.
Regulation (%)
2.
Steady-state-stability (variation) (bandwidth %)
(a) Short term (30 seconds)
(b) Long term (4 hours)
3. Transient performance
(a) Application of rated load
(1) Dip (%)
a.
60 Hz
—
b.
400 Hz
(2) Recovery (seconds)
(b) Rejection of rated load
(1) Rise (%)
a.
60 HZ
b.
400 Hz
(2) Recovery (seconds)
(c) Application of simulated motor load (twice rated current)
(1) Dip (%)
a.
60 Hz
b.
400 Hz
(2) Recovery to 95% of rated voltage (seconds) (Note 1)
4.
Waveform
(a) Maximum deviation factor (%)
(b) Maximum individual harmonic (%)
5.
Voltage unbalance with unbalanced load (%) (Note 2)
6.
Phase balance voltage (%)
7.
Voltage adjustment range
(a) 50 Hz (120/208 volts)
50 Hz (240/416 volts)
(b) 60 Hz (120/208 volts)
60 Hz (240/416 volts)
Value
1
1
2
15
12
0.5
15
12
0.5
30
25
0.7
5
2
5
1
190 to 213 volts
380 to 426 volts
197 to 240 volts
395 to 480 volts
Test method
MIL-STD-705
608.1
608.1
608.2
619.2
619.2
619.2
619.2
619.2
619.2
619.1
619.1
619.1
601, 1
601.4
620.2
508.1
511.1
511.1
1-50
