Verifying safe isolation from supply
139-2021.9 / 07 NXAIR M 131
Indications VOIS+, VOIS-R+, CAPDIS-S1+ / CAPDIS-S2+
Operational high voltage not present
Operational high voltage present
Operational high voltage not
present
Auxiliary voltage not available
(only CAPDIS-S2+)
Failure in phase L1,
operational high voltage at L2 and L3
Voltage (not operational high voltage
voltage) present
Indication: “Test” passed
(lights up shortly)
Indication: “Test” not passed
(lights up shortly)
Overvoltage present
(lights up permanently)
Indication:
“ERROR” e.g. in case of missing
auxiliary voltage
Fig. 221: Indications VOIS+, VOIS-R+, CAPDIS-S1+/-S2+
Features VOIS+, VOIS-R+, CAPDIS-S1+ / CAPDIS-S2+
Integrated display, without auxiliary power
Integrated display, without auxiliary power
Maintenance-free, repeat test
required
Degree of protection IP54
Degree of protection IP54
With integrated 3-phase test socket for phase
comparison
With integrated 3-phase test socket for phase
comparison
Integrated repeat test of the
interfaces