Electrical Connection; Supply Voltage - Grundfos UPE 2000 Series Montage- Und Betriebsanleitung

4. Electrical connection

The electrical connection and protection should be
carried out in accordance with local regulations.
Never make any connections in the pump
terminal box unless the electricity supply
has been switched off for at least 5 min-
utes.
The earth terminal of the pump must be
earthed.
The pump must be connected to an exter-
nal mains switch with a minimum contact
gap of 3 mm in all poles.
Earthing or neutralization can be used for
protection against indirect contact.
Megging must be carried out as de-
scribed in section 9. Megging .
If the pump is connected to an
electric installation where an
earth leakage circuit breaker
(ELCB) is used as an additional
protection, this circuit breaker
must trip out when earth fault
currents with DC content (pul-
sating DC) and smooth DC
earth fault currents occur.
The earth leakage circuit
breaker must be marked with
the two symbols shown.
• The pump requires no external motor protection.
• If a classification of the pump to overvoltage prop-
erty class 1 or 2 in accordance with VDE 0160/
12.90 is required, a prefilter must be installed.
Contact GRUNDFOS for further information.
• The operating voltage and frequency are marked
on the pump nameplate. Please make sure that
the motor is suitable for the electricity supply on
which it will be used.

4.1 Supply voltage

3 x 400-415 V ±10%, 50 Hz.
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