Megging - Grundfos UPE Series 2000 Installation And Operating Instructions Manual

9. Megging

Megging of an installation incorporating a GRUND-
FOS MAGNA pump is not allowed, as the built-in
electronics may be damaged. If megging of the pump
is necessary, the pump should be electrically sepa-
rated from the installation.
Megging of the pump can be carried out as de-
scribed below.
Megging of pumps
1. Switch off the electricity supply.
2. Remove the wires from terminals L and N and the earth
conductor.
3. Short-circuit terminals L and N using a short wire (see
B).
4. Remove the screw for electronics frame connection
(see A).
5. Test between terminals L/N and earth (see C).
Maximum test voltage: 1500 VAC/DC.
Note: Never test between supply terminals (L and N).
Maximum permissible leakage current: < 20 mA.
6. Fit the screw for electronics frame connection (see A).
7. Remove the short wire between terminals L and N
(see B).
8. Fit the supply wires to terminals L and N and the earth
conductor.
9. Switch on the electricity supply.
B
A
C
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