Description; Casing - Chauvin Arnoux C.A 6545 Notice De Fonctionnement

2.1

Casing

See the presentation views of the instruments in § 11 Appendix, at the end of this user's manual.
2.1.1 C.A 6545 and C.A 6547
3 safety terminals, Ø 4 mm marked: "+", "G" and "-"
Access to terminal "G" protective fuse
7-way rotary switch:
Off: switches off unit power
500 V - 2 TΩ : insulation measurement up to 2 TΩ
1000 V - 4 TΩ : insulation measurement up to 4 TΩ
2500 V - 10 TΩ : insulation measurement up to 10 TΩ
5000 V - 10 TΩ : insulation measurement up to 10 TΩ
Var. 50 - 5000 V : insulation measurement with variable test voltage
SET-UP: adjustment of unit configuration
1 yellow START / STOP push button: start / end of measurement
6 keys (C.A 6545) or 8 keys (C.A 6547) made of elastomer each having a main function and a
secondary function:
Selection of the second function (in yellow Italics above each key)
2nd
R-DAR-PI-DD Primary function: before the insulation measurements, selection of required
measurement type: normal measurement, calculation of dielectric absorption ratio
(DAR), calculation of polarisation index (PI) or Dielectric Discharge test DD. After or
during the measurements, display of R, DAR, PI, DD and capacity (µF).
R (t) Secondary function: display/no display of intermediate values of insulation resistance,
test voltage and time stamp, following a programmed time test (the V-TIME keys may
also be used).
V-TIME Primary function: In insulation, display of elapsed time from the beginning of
measurement, then of exact voltage generated. In MR (memory recall) mode, display
of the date and time of the memorised measurement, of the exact test voltage and of
the memory address OBJ: TEST.
Secondary function: activation/deactivation of «programmed time test» mode
Primary function: ON/OFF of display backlighting
ALARM Secondary function: activation/deactivation of alarms programmed in the SET-UP
Primary function: Select a parameter for modification.
SMOOTH Secondary function: ON/OFF for display smoothing during insulation measurement

2. DESCRIPTION

37