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California Instruments 11
User Manual Compact i/iX Series
2. Specifications
Specifications shown are valid over an ambient temperature range of 25 ± 5° C and apply after a 30
minute warm-up time. Unless otherwise noted, all specifications are per phase for sine wave output
into a resistive load. For three phase configurations or mode of operation, all specifications are for
Line to Neutral (L-N) and phase angle specifications are valid under balanced load conditions only.
Specifications for i models are identical to those for the iX except where noted.
2.1 Electrical
2.1.1 Input
Parameter Specification
Model 751i / iX 1501i / iX
Line Voltage:
(single phase, 2 wire +
ground (PE))
115 VAC ± 10 %
230 VAC ± 10 %
(AC Line selector switch on rear panel.)
Line VA: 980 VA / 950 W 1920 VA / 1860 W
Line Current at nominal
input voltage, full power:
< 8.5 Arms @ 115V
< 4.4 Arms @ 230V
< 17 Arms @ 115V
< 8.8 Arms @ 230V
Line Current at low line
input voltage, full power:
< 9.5 Arms @ 103.5V
< 4.9 Arms @ 207V
< 19 Arms @ 108V
< 9.9 Arms @ 207V
Line Frequency: 47-63 Hz
Efficiency: 80 % (typical @ full load)
Power Factor: 0.97 (typical @ full load)
Inrush Current: 160 Apk max. for less than 10 ms
Hold-Up Time: > 10 ms
Isolation Voltage: 1350 VAC input to output
1350 VAC input to chassis
California Instruments 12
User Manual Compact i/iX Series
2.1.2 Output
Output Parameter Specification
Modes i models: AC, DC
iX models: AC, DC, AC+DC
Voltage
Ranges (L-N):
AC, AC+DC Mode
Low Vrange: 0 - 150 Vrms
High Vrange: 0 - 300 Vrms
DC Mode
Low Vrange: 0 - 200 Vdc
High Vrange: 0 - 400 Vdc
Programming Resolution: 0.1 V
Accuracy:
(ALC mode ON)
0.1% FS1 (from 5V to FS1)
Distortion THD2:
< 1 % 16 - 1000 Hz
(harmonics and noise to 300 kHz)
Load Regulation:
(ALC mode ON)
0.1 % FS1
Voltage Sense modes: Internal
External
External Sense Up to 3 % of set voltage can be dropped across each load lead.
Line Regulation: 0.02% for 10% input line change
DC Offset Voltage:
(In AC mode)
< 20.0 mV
Output Noise:
(20 kHz to 1 MHz, full R load)
< 100 mVRMS – 150V / 200V Range
< 200 mVRMS – 300V / 400V Range
Output Coupling Direct coupled
Output Impedance (Z) (@
max current)
Z = Vrange * 0.001 / I_load
Current
Model 751i / iX 1501i / iX
AC Mode
High Voltage range 2.5 Arms @ 300 V
3.25 Arms @ 230 V
5.0 Arms @ 300 V
6.5 Arms @ 230 V
Low Voltage range 5.0 Arms @ 150 V
6.5 Arms @ 115 V
10.0 Arms @ 150 V
13.0 Arms @ 115 V
1 FS (Full Scale) refers to highest available range, e.g. 300Vac in AC mode, 400Vdc in DC mode.
2 The distortion specification applies at 77% voltage range, max current and resistive load conditions.
California Instruments 13
User Manual Compact i/iX Series
Output Parameter Specification
DC Mode
High Voltage range 1.25 Adc @ 400 V
1.67 Adc @ 300 V
2.5 Adc @ 400 V
3.25 Adc @ 300 V
Low Voltage range 1.25 Adc @ 200 V
1.67 Adc @ 150 V
1.25 Adc @ 200 V
1.63 Adc @ 150 V
AC+DC Mode
High Voltage range 1.25 Adc @ 300 V
1.63 Adc @ 230 V
2.5 Adc @ 300 V
3.25 Adc @ 230 V
Low Voltage range 1.25 Adc @ 150 V
1.63 Adc @ 115 V
1.25 Adc @ 150 V
1.63 Adc @ 115 V
Current Limit mode Programmable, CC or CV mode
Note: Constant power mode allows higher current at reduced voltage. Maximum current available at 77% of
voltage range. See Figure 2-1 through Figure 2-8 for voltage versus current profiles by model and
voltage range.
Maximum AC Peak Current
AC mode, High Vrange
AC mode, Low Vrange
10 Apk
20 Apk
20 Apk
40 Apk
Crest Factor AC Current
Maximum CF at full scale
voltage rms current
4:1
Power
Model 751i / iX 1501i / iX
AC Mode 750 VA 1500 VA
DC Mode
High Voltage range 500 W 1000 W
Low Voltage range 250 W 250 W
AC+DC Mode 375 VA 750 VA
Frequency
Range: 16 Hz - 1000 Hz
Resolution1: 0.01 Hz [< 81.91 Hz]
0.1 Hz [> 82.0 to 819.1 Hz]
1 Hz [> 819 Hz]
Accuracy: ± 0.025 %
Temp. Coefficient ± 5 ppm of value / °C
Stability: ± 15 ppm of value
Note: All output specifications apply below the Current / Voltage rating line shown in the V/I
rating charts of sections 2.1.2.1 through 2.1.2.4.
1 Programming resolution reduced if –LKM/-LKS option is installed. See paragraph 2.8.
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