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SECTION 1–GENERAL DESCRIPTION
Output Current Per Phase SW 21000: 52A to 135V in 156V range, derates linearly to
44.8A @ 156V; 26A to 270V in 312V range, derates linearly to 22.4A @ 312V.
Crest Factor: 4.0 (peak output current to RMS output current)
Output Frequency: DC or 40 Hz to 5 KHz.
Output Power Per Phase: SW10500: 3500VA; SW15750: 5250VA; SW21000: 7000VA.
Total Harmonic Distortion (Full Linear Load or No Load): 0.25% maximum, 40 to
100 Hz; 0.5% maximum to 500 Hz; and 1% maximum to 1 KHz plus 1%/KHz to 5 KHz.
AC Noise Level: >60 dB RMS below full output (sine wave, 40 Hz - 500 Hz).
Amplitude Stability with Remote Sense: ±0.1% of full scale over 24 hours at constant
line, load, and temperature.
Load Regulation: ±0.025% of full scale voltage for a full resistive load to no load, above
1 KHz, add ±0.015% KHz.
Line Regulation (DC, or 40 Hz to 5 KHz): ±0.025% of full scale for a ±10% input line
change.
Voltage Accuracy: ±0.1% of range. Above 1 KHz, add 0.2% KHz. Add ±0.1% of full
scale for AC PLUS DC mode. Valid for 5 to 156 VRMS and 10 to 312 VRMS at 25°C
(77°F), sine, sense leads connected.
Voltage Resolution: 0.05% of full scale.
Frequency Resolution: 0.01 Hz 40 to 99.99 Hz
Frequency Accuracy: ±0.01% at 25°C ±0.001%/°C.
Phase Accuracy, Phase to Phase Balanced Linear Resistive Load:
±1°, 40 Hz to 1 KHz plus ±1°/KHz above 1 KHz.
Phase Angle Resolution: 0.1°.
Remote Output Voltage Sense: 5 VRMS total lead drop, maximum. Sense leads must
be connected at frequency >500 Hz.
Output Impedance: SW 10500: 1 phase; SW 15750 or SW 21000: 1 or 3 phase mode
meets requirements of IEC-1000-3-2, Annex A, supply source. Valid for equipment
classes A, B, C and D.
1-2
0.05 Hz 100 Hz to 999.9 Hz
0.5 Hz 1000 Hz to 5000 Hz
SW 10500/15750/21000
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