AFX SERIES® OPERATION MANUAL
SECTION 11: CALIBRATION
Entire Contents Copyright
2016 by Pacific Power Source, Inc. (PPS) • All Rights Reserved • No reproduction without written authorization from PPS.
AFX Series Power Source Operation Manual
Page 266 of 274
Single Phase Mode Setup
For Single phase mode current Calibration, the load must be size appropriate. See next section
for recommended load value by model and phase mode.
AC Line
Input
DMM
Hi Sense
Lo Sense
Use optional P/N 160086 Single Phase
Mode Shorting Connector
R Load
A B C N N N
Figure 11-3: Current Calibration Equipment Setup – 1 Phase Mode
11.4.1
Current Calibration Load Values
Full scale current gain calibration is best performed at current levels that are around 90% of full
scale current. Since the AFX Series® has only a single voltage range, maximum RMS current is
available at 120Vrms L-N for each phase. For single phase mode, the current is three times
higher. Thus, to obtain 90% of load current, resistor value that is sized to draw this current level
at around 120Vrms is required. Since the maximum current varies by model and phase mode,
the table below shows the recommended resistor values or resistive load bank settings.
Three & Two Phase Mode
Single Phase Mode
Model
Rating/phs
VA/W
Max.
Irms/phs
Calibration
Current
(90%)
Recommended
R Load (Ohm)
Max/
Irms
Calibration
Current
(90%)
Recommended
R Load (Ohm)
360AFX
2000
16.7
15
8.00
50
45
2.67
390AFX
3000
25.0
23
5.33
75
68
1.78
3120AFX
4000
33.3
30
4.00
100
90
1.33
3150AFX
5000
41.7
38
3.20
125
113
1.07
3180AFX
6000
50.0
45
2.67
150
135
0.89
3240AFX
8000
66.7
60
2.00
200
180
0.67
3300AFX
10000
83.3
75
1.60
250
225
0.53
3450AFX
15000
125.0
113
1.07
375
338
0.36
3600AFX
20000
166.7
150
0.80
500
450
0.27
Table 11-3: Calibration Load Values by Model and Phase Mode
Summary of Contents for 3120AFX
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