HVTest HT-802, Руководство пользователя

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Harmonic Restraint Setting Point Search
Move the mouse to the coordinate system of the characteristic curve, click the left mouse
button, then select ‘Add setting point’ button for putting this point in the testing data list, repeat
the above operation to add multiple test points, as shown in the figure. The test points should
be selected in the action area and non-operating area, in order to verify whether the curve is
correct. Click the ‘start test’ button to start the test.
2. Differential test notices
(1) Setting equilibrium factor: Wrong equilibrium factor may lead to a large deviation
between the curve tested and setting curve. So please select the right equilibrium factor
according to the setting value of protection.
(2) Selection of computing formula: Wrong selection of differential current and braking
current formula results in the testing curve deviating from the setting value of protection, even
completely wrong. So should correctly select the formula.
(3) Selection of current phase on both sides: Wrong selection of current phase, the test
results will be totally wrong. If the differential current equals to the sum of the current from two
sides, both sides of the current phase difference is 180 degrees; if the differential