11-3
Introduction
The 5522A-PQ Option (hereafter the PQ Option) provides calibration functions to
maintain power quality monitoring equipment. The following functions are provided:
• Harmonic Distortion simulation (Composite Harmonics Function)
Allows the user to specify up to 15 tones (harmonics) including all even and odd
values to the 63rd. For each harmonic value, the user may enter the amplitude and
phase relative to the fundamental. There are also 7 preinstalled waveforms with up to
49 harmonics. The harmonic waveforms are available in V, A, V-A, and V-V modes.
• Flicker simulation (Delta (Δ) Amplitude, “flicker”)
Provided by means of rectangular or sinewave modulation of the output signal. The
repeat frequency and amplitude deviation are selectable. Flicker is available in V, A,
V-A, and V-V modes.
• Sags & Swells simulation (Delta (Δ) Amplitude, “single”)
In this mode, the user can output a one-time (single), amplitude deviation over a
specified time interval. The user may select three parameters: the ramp time, width of
the event, and % amplitude deviation. The ramp time is the period of time over which
the output value changes from its nominal setting to the select modified value. The
width of the event is selectable from 0.032 seconds to 60.0 seconds. The amplitude
deviation is selected as a percentage of the nominal. This function is available in V,
A, V-A, and V-V modes.
5522A PQ Specifications
These specifications apply only to the PQ Option. General specifications that apply to the
5522A (the Calibrator) can be found in Chapter 1. The specifications are valid under the
following conditions:
• The Calibrator is operated under the conditions specified in Chapter 1.
• The Calibrator has completed a warm-up period of at least twice the length of time
the calibrator was powered off, up to a maximum of 30 minutes.
• The PQ Option has been active longer than 5 minutes.
5522A PQ Option Specifications
Composite Harmonic Function Specifications
Maximum Number of Harmonics in a User Defined Waveform
15
Specified Fundamental Frequencies
15-65 Hz, 400 Hz
[1]
Highest Harmonic Frequency
5 kHz
[2]
Harmonic Amplitude Resolution
0.1 % of fundamental
Harmonic Phase Range (relative to fundamental)
0 to 360 °
Harmonic Phase Resolution
0.1 ° relative to fundamental
Pre-loaded Industry Waveforms
IEC A, IEC D, NRC7030, NRC 2 to 5
[1] AC Voltage outputs ≥ 33 V, and Current outputs ≥ 3 A have low frequency limits of 45 Hz. Other fundamental frequencies within the
output limits of the 5520A can be used, but are not specified.
[2] Current outputs with LCOMP ON have lower limits, as shown in the AC Current table below. Voltage outputs > 33V have a 2 kHz
limit.
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