Chauvin Arnoux C.A 6456 Bedienungsanleitung Seite 72

4.4.2 PREPARATION FOR THE MEASUREMENT (CONNECTION))
=> If necessary, in SET-UP mode:
- set threshold voltage U
- the type of compensation of the measuring cables (see § 3.3))
- set the alarm threshold Z
- possibly, select a value of U
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>
88.88
88.88
88.88
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- possibly, select a value of U
PUSH
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U MEAS
ref
I
k
PUSH
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- the current generated for the measurement in low current mode (see § 4.2.2),
- set the number of measurements to be counted to smooth the measurement (see § 3.2)
=> Set the switch to the ZLOOP position,
=> Activate the alarm by pressing the ALARM key,
=> Connect the line power plug or the 3 separate cables to the installation to be tested,
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(see § 3.2),
L
or R (see § 4.2.2)
L L
to be used for the calculation of the short-circuit current :
REF
2 nd + x2
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direction of alarm (> ou<)
location of decimal point
setting of the values of each of the 4 digits,
selected by successive presses on the
keys
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x3
to be used for the calculation of the short-circuit current:
REF
x4
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selection of voltage :
MEAS/230/400/127 ou MEAS/220/380/110
x3
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