Section 3 - Calibration; Scope; Applicable Documents; Required Test Equipment - Cal Power TrueWave TW5250 Service Manual

SECTION 3 – CALIBRATION

3.1 SCOPE

These procedures cover the calibration of TrueWave models TW1750, TW3500,
and TW5250. Calibrating the TrueWave requires no internal adjustment, therefore
the covers do not need to be removed (i.e., software calibration). Calibration is
accomplished by connecting test equipment to the unit's output and entering externally
measured data via computer over the GPIB port.

3.2 APPLICABLE DOCUMENTS

TrueWave Operating Manual:
TrueWave SCPI Specification:

3.3 REQUIRED TEST EQUIPMENT

The equipment listed below or equipment with equivalent capabilities can be used to
calibrate the TrueWave's output and measurement. The measurement equipment listed
meets the 4:1 ratio required by many calibration standards.
Description
Digital Multimeter
6½ digits AC
Power Analyzer,
three-phase
Counter Timer
Resistor Divider
Resistive Loads
Computer with
IEEE-488.2 Interface
TABLE 3-1. CALIBRATION TEST EQUIPMENT
Elgar Document No. M161469-01
Elgar Document No. M161469-02
Accuracy
AC Volts
Range: 0-350 VAC
Accuracy: 0.025%
RMS Current
Range: 0-13 A/phase
Accuracy: 0.25%
Peak Current
Range: 0-56 Apk/phase
Accuracy: 1.25%
Power
Range: 0-1800W/phase
Accuracy: 0.625%
Phase Angle
Accuracy: 0.25°
10:1 ration > 100KΩ
12Ω, 2000W (min.)
48Ω, 2000W (min.)
N/A
Model & Model No.
Fluke 1271 with high
accuracy (option 12)
Voltech PM3000A
Agilent 53131A
Any
Any
Any
Any
3-1