Description; Unit Overview - Chauvin Arnoux C.A 6541 Manual De Instrucciones

2.1

Unit overview

Refer to the pictures of the device in Appendix § 11, found at the end of this user's manual.
2.1.1 C.A 6541 and C.A 6543
Œ
3 x 4 mm ∅ safety terminals labelled: " + ", " G " and " - "
Next to the " - " terminal, there are 2 additional terminal contacts for the connection of the remote
control probe (3 contact connector)

Rotary selector switch with 9 positions:
Off : instrument is off
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MΩ - 50 V : insulation measurement up to 200 GΩ
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MΩ - 100 V : insulation measurement up to 400 GΩ
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MΩ - 250 V : insulation measurement up to 1 TΩ
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MΩ - 500 V : insulation measurement up to 2 TΩ
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MΩ - 1000 V : insulation measurement up to 4 TΩ
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400 KΩ : resistance measurement
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40 Ω
: continuity measurement
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SET-UP :set-up of the device configuration
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Ž
1 yellow START / STOP button: start/stop of the measurement
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6 buttons (C.A 6541) or 8 buttons (C.A 6543) in elastomer, each with a first and a second function:
Selection of the second function (in yellow italics below each button)
2nd
First function: before insulation measurement use to choose the type of measurement
desired from amongst normal measurement, the dielectric absorption ratio (DAR)
R-DAR-PI
and the polarisation index (PI). After measurement it displays R, DAR, PI and
capacitance (µF).
Second function: Show / hide the interval values of insulation resistance, test voltage
R (t)
and time-stamping, following a time-controlled test (buttons V-TIME and
used).
V-TIME First function: When measuring insulation, it displays the time elapsed since the
beginning of the measurement, then the exact voltage generated. When carrying out
Resistance or Capacitance measurement, this button has no effect. In MR (memory
recall), it displays the date and the time at which the measurement was memorised, the
exact test voltage and the OBJ : TEST number.
Second function: activation/deactivation of "time-controlled" test mode
6
First function: to turn display back-lighting on and off
Second function: to activate/deactivate the alarms programmed in SET-UP
ALARM
First function: to select a parameter to be modified
SMOOTH Second function: to stop/start smoothing of displayed values during insulation testing

2. DESCRIPTION

36
L
can also be
M