Current Calibration Load Values - Pacific Power Source AFX Series Operation Manual

Single Phase Mode Setup
For Single-phase mode current Calibration, the load must have the appropriate size. See next
section for recommended load value by model and phase mode.
Use optional P/N 160086 Single Phase
Mode Shorting Connector

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.
Rating/phs
Model VA/W
360AFX 2000
390AFX 3000
3120AFX 4000
3150AFX 5000
3180AFX 6000
3240AFX 8000
3300AFX 10000
3450AFX 15000
3600AFX 20000
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Entire Contents Copyright 2018 by Pacific Power Source, Inc. (PPS) • All Rights Reserved • No reproduction without written authorization from PPS.
AFX Series Power Source Operation Manual
Hi Sense
Lo Sense
DMM
Figure 11-3: Current Calibration Equipment Setup – 1 Phase Mode
Three & Two Phase Mode
Calibration
Max. Current
Irms/phs (90%)
16.7 15
25.0 23
33.3 30
41.7 38
50.0 45
66.7 60
83.3 75
125.0 113
166.7 150
Table 11-3: Calibration Load Values by Model and Phase Mode
AFX SERIES® OPERATION MANUAL
A B C N N N
R Load
Recommended Max/
R Load (Ohm) Irms
8.00 50
5.33 75
4.00 100
3.20 125
2.67 150
2.00 200
1.60 250
1.07 375
0.80 500
Calibration
SECTION 11:
AC Line
Input
Single Phase Mode
Calibration
Current Recommended
(90%) R Load (Ohm)
45 2.67
68 1.78
90 1.33
113 1.07
135 0.89
180 0.67
225 0.53
338 0.36
450 0.27
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