Fluke 522A/6, Operator'S Manual

Page: 388 / 426

5522A
Operators Manual
11-18
How to Set the Flicker Amplitude
The
Δ
V/V blue softkey brings up a screen in the Control Display allowing the user to
specify the amplitude of the deviation as a percentage of the nominal output value. The
percentage value may be positive or negative.
P
ST
Values
IEC 61000-4-15 (“Flickermeter – Functional and Design Specifications”) defines the
severity of flicker in terms of a short term (“st”) observation period of 10 minutes. For
both 50 HZ and 60 Hz, the calibrator has 7 combinations of amplitude changes and
frequency to give a P
st
reading of 1 on a flickermeter. These 7 values can be accessed by
pressing the P
st
= 1 VALUES blue softkey.
When the P
st
= 1 VALUES blue softkey is pressed, the menu shown below appears.
nn377f.eps
Use the
↑
and
↓
blue softkeys to navigate back and forth between the 7 installed P
st
values. Select the desired P
st
value then press the LOAD VALUE blue softkey. The
Control Display will now revert back to the Flicker Menu. Notice that the new P
st
value
has now been loaded.
The Pst 1 softkey chooses classifiers that effectively change the flickermeter P
st
readings
from 1 to the chosen values. There are 1-5 classifiers.
The Table 60 Hz softkey chooses the appropriate delta voltage and time combinations for
either 60 Hz or 50 Hz operation. Note that this selection also changes the output
frequency of the calibrator.
How to Set Phase and Reference in the
Δ
AMPL Function
For a detailed description of this procedure, refer to "Setting the Output" in Chapter 4 of
this manual.
Delta (
Δ
) Amplitude, Flicker Function (Current)
Simulating flicker for a current output is similar to a voltage output. There are additional
menus (e.g. LCOMP and OUTPUT) that pertain to the current output. Refer to the
previous section for more information.
Note
Before starting this section, refer to "Entering the PQ Modes " earlier in
this chapter.
Delta (
Δ
) Amplitude Mode (Amps)
Enter the PQ Delta (
Δ
) Amplitude mode (PQ:
Δ
AMPL). Press the
Δ
AMPL softkey to
access the Delta (
Δ
) amplitude functions. The
Δ
AMPL Menu, shown below, appears in
the Control Display. From this mode the flicker and sags/swells functions are accessible
by pressing the SET
Δ
blue softkey.