Megger BALTO Compact 4000, User Manual

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Several types can be selected :
„ Linear (Slope, Duration).
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Input parameters : di/dt - dt
„ Linear (Slope, Current).
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Input parameters : di/dt - I
„ Linear (Duration, Current).
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Input parameters : dt - I
„ Exponential (Duration, Current).
Parameters.
The input parameters depend on the selected slope type.
Parameter: Description: Unit:
di/dt The slope used for a linear injection. A/s
dt The duration used for a linear injection. ms
ΔI The magnitude of the injection. A
Absolute value If this is checked, then the current will rise to exactly ‘I’.
Otherwise, ‘I’ + the bias current.
Bias current The injection starts with a bias current (standard 100 A)
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The rate of increase used for an exponential injection.
‘tau’ is the time it takes to reach 63,2% of ‘I’. ms
Flat Part The time to hold the final current after the injection. ms
Principle of measurement.
Linear injections, example :
Example:
The key ‘Preview’ from the dialog displays the dialog ‘P26_Graph’ with a view on the injection graphic.
www.megger.com + 7.500 A 115
Secondary Injection.