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The CT Analyzer Test Cards
6.6.5 Accuracy Limiting Error Graph*
* According to the "China Electric Regulations for protection CTs".
To display the AL error graph, press the AL Error Graph soft key in the
Excitation card.
Note: The "AL Error Graph" function can be switched on or off in the device
settings (Main Menu, entry "Settings" -> Setting Menu, entry "Accur. Limiting
Error Graph"). If switched off, the AL error graph is not included in the test report.
All standards are supported, except IEC 60044-6 class TPZ.
Figure 6-15 AL error graph
Available soft keys
Moves the cursor upwards on the error graph.
Moves the cursor downwards on the error graph.
Switches off the display of values on the top right of the diagram. If
you have switched off the values, this soft key changes to Text On
to switch the values display on again.
Closes the AL error graph and brings you back to the Excitation
card.
Moves the cursor to that point on the error graph that corresponds to
the nominal burden value defined in the "VA" field of the CT-Object
card (value entered by the user or determined by the CT Analyzer).
Moves the cursor to that point on the error graph that corresponds to
the operating burden value defined in the "Burden" field of the
CT-Object card (value entered by the user or determined by the
CT Analyzer).
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