Checklist for Insulation Tests
Page 23
C. Checklist
Checklist
for the Supervision of Insulation Tests
(to DIN 30 672) using the E
LMED
ISOTEST.
C.1. Test of Readiness for Operation
C.1.1 Battery (Varta 5M6 6 V/6 Ah or Sonnenschein 6 V/6.5 Ah)
Has the battery state of charge been checked correctly?
This test can be performed using the ELMED battery charger (see operating manual
for the battery charger).
C.1.2 Meaning of the Acoustic Signals
A brief buzzer sound when the test button is pressed indicates that the tester is ready
for operation. A brief buzzer sound is heard when the main switch of the ISOTEST
3P is turned on.
FAULT
Buzzer does not sound when the test button is pressed.
CAUSE
REMEDY
Main switch on tester has not been
turned on.
Turn main switch to ON or I
No battery installed in tester
Install battery
Battery discharged
Replace battery or inspect old
battery and recharge.
Defective fuse in battery
Replace fuse.
Fuse blown
Check fuse (VT/VRT only) and
replace, if necessary
Technical defect in the tester
Send in tester for inspection
Only for the ISOTEST 3P
Battery in handle is flat
Replace battery
..., if the unit had not been switched off within 5 minutes of the last time that the
safety bottom was operated. It can only be put back into operation by switching
the unit off and then on again.
FAULT
