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Dynamic regulation and response time |
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|  3.3.2.2 Dynamic regulation and response time. In the LOW RANGE posi-
tion with the sudden application or release of any load current up to 50
amperes, the voltage at the output terminals shall not fall nor rise more
than 5 percent from the no-load setting and shall decline to 37 percent
of the voltage excursion within 75 milliseconds. This requirement ap-
plies to any output voltage above 25 volts. At no-load settings below
25 volts, with the sudden application or release of any load current up
to 50 amperes, the voltage at the output terminals shall not fall nor
rise more than 1.25 volts and shall recover to within 0.5 volt of the no-
load voltage within 75 milliseconds.
3.3.2.2.1 Overshoot or undershoot. A momentary interruption of the ac
input power shall not cause the output voltage to overshoot the preset
value by more than 5 percent. When ac input power is applied to the
power supply, the dc output voltage shall rise at a rate of not less
than 30 volts per second to the voltage set by the output voltage con-
trol. The output voltage shall not overshoot the preset value by more
than 5 percent, and shall return to the preset value in less than 0.5
second. A sudden change in the position of the output voltage control
setting shall not cause an overshoot or an undershoot of voltage in ex-
cess of 5 percent of the new preset value.
3.3.2.3 Output stability. At any given voltage setting within the
voltage range specified in 3.3.2, the output voltage shall remain with-
in plus or minus one volt, without adjustment, for a minimum of four
hours, monitored continuously by use of the voltmeter recorder of 4.5.5.
3.3.2.4 Static line regulation. The static line regulation shall not
exceed 1 percent for a plus or minus 10 percent line voltage change or a
plus or minus 5 percent variation of input frequency at constant load.
3.3.2.5 Output voltage control. Changes in the power supply's output
voltage control shall result in simultaneous changes in the dc output
voltage, with negligible lag. The voltage control shall be capable of
adjusting the output voltage in the range of 6 to 90 volts within in-
crements of less than one-half volt. The output voltage shall be linear
within plus or minus 20 degrees with respect to the angular displacement
of the output voltage control.
3.3.2.6 Ripple voltage. The ripple content of the dc output of the
power supply shall not exceed 0.50 percent rms (1.50 percent peak-to-
peak) at any output above 25 volts or current within rating in the LOW
voltage range.
3.3.2.7 Output isolation. output of the power supply shall be isolated
from ground with either polarity capable of being grounded.
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