Chauvin Arnoux C.A 6505 Notice De Fonctionnement page 45

V
V
AC
V
AC

The insulation resistance is outside the
measurement range.
Check your connections; one of the terminals
of the instrument may be disconnected, or else
the value measured is in fact > 4 T
The spurious voltage present on the terminals
is greater than 25 VAC or 35 Vpeak.
The instrument alerts you but does not prevent
making the measurements.
The spurious voltage present on the terminals is
too high for a measurement to be made:
peak spurious V > 0.4 Un
The test voltage, Un, is indicated by the setting
of the switch.
Eliminate the spurious voltage and restart the
measurement.
Indicates that the protective fuse of the G
terminal is defective.
Replace the fuse as indicated in § 6.1.2.
Ω
.