Insulation Resistance Test - ITT A 402 Serie Instructions D'installation Et D'entretien

A_AD 16.05.2007 8:22 Uhr
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Seite 62
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9. Insulation resistance test

A test of insulation resistance may only be performed
in an installation with A pumps as the installed electronics could
otherwise be damaged.
If a test is performed, the pump has to be electrically separated
from the installation.
Insulation resistance test of pumps A..., AD...
1. Switch off / interrupt the distribution voltage.
Wait 10 min until the voltage has dissipated!
2. Disconnect the lines
from terminal L and N and the ground wire.
3. Unscrew the screw (3).
4. Remove the module (4).
5. Short-circuit terminal L and N with a short line
(see A)
6. Unscrew the screw for the electronics' ground connection
(see B).
7. Test at max. 1500 VAC / DC between terminals L / N
and the grounding (see C).
Warning: Under no circumstances should the test
be between phase (L) and (N).
Max. admissible leakage current < 25mA.
8. Remove the test device (C).
9. Screw the screw (B) back in.
10. Remove the short line between terminal L and N
(see A).
11. Connect lines (L) and (N) and the ground wire
12. Install the module (4). Connect the contacts carefully.
13. Secure with a screw (3).
14. Switch on the distribution voltage.