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GT-650/GT-900 User's Manual
37
Clamp Current Test (
) (GT-900 only)
The test with the external clamp adapter measures the current in clamped
conductor. The function is intended to measure:
The earth leakage current in the protective conductor (PE).
The load current in line (or neutral) conductor.
Test procedure and instructions:
Connect the clamp according to one of the figures 27, 28 or 29, depending on
which current one wish to measure.
Select appropriate measurement range by using menu key “RNG” (F1), (0 ... 20
mA for earth leakage current or 0 ... 60 A for load current).
Figure 27: Earth leakage current test connection (differential method)
Figure 28: Earth leakage current test connection (direct method)
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