Megging; High-Voltage Test - Grundfos UPE 2000 Series Montage- Und Betriebsanleitung

9. Megging

Megging of an installation incorporating an UPE
pump is not allowed, as the built-in electronics may
be damaged. If megging of the pump is necessary,
the pump should be electrically separated from the
installation.
Megging of the pump can be carried out as de-
scribed below.
Megging of UPE pumps
1. Switch off the electricity supply.
2. Remove the wires from terminals L1, L2 and L3 and the
earth wire (see B).
3. Short-circuit terminals L1, L2 and L3 using two short
wires (see D).
4. Remove the wire for electronics frame connection (see
A).
5. Test between terminals L1/L2/L3 and earth (see C).
Maximum test voltage: 1500 VAC/DC.
Note: Never test between supply terminals (L1, L2 and
L3).
Maximum permissible leakage current: < 20 mA.
6. Fit the wire for electronics frame connection (see A).
7. Remove the short wires between terminals L1, L2 and
L3 (see D).
8. Fit the supply wires to terminals L1, L2 and L3 and the
earth wire (see B).
9. Switch on the electricity supply.

9.1 High-voltage test

If it is necessary to high-voltage test the UPE pump,
the megging instructions must be followed, see sec-
tion 9. Megging .
B
C
D
A
161