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2
Morsetto di alimentazione - Power supply terminal - Borne de alimentación
3 Collegamento tipico per macchine di potenza inferiore a 5,5 kW
3 ~ 230 V
3 ~ 400 V
Collegamento errato
Collegamento corretto
4 Collegamento tipico per macchine di potenza uguale o superiore a 5,5 kW
3 ~ 400 V
3 ~ 680 V
Collegamento corretto
Collegamento errato
L'errato collegamento delle linee di terra ad un morsetto
diverso da quello di terra danneggia irrimediabilmente
tutto l'apparato!
L'errato collegamento della linea di alimentazione sui
morsetti di uscita destinati al carico danneggia irrimedia-
bilmente tutto l'apparato!
Connection to the power supply line
Connect the PWM to the power supply line. If an extension of the power
cable is required, use a cable with a suitable section to limit possible
overall voltage drops (power supply plus pump) to 3%. In any event,
never use cables with a section of less than 1.5 mm
In the case of extensions to the inverter cables, for example for power
supply to submersed electric pumps, if there is electromagnetic distur-
bance, the following is recommended:
1. Check earthing and if necessary add an earthing device in the im
mediate vicinity of the PWM.
2. Embed the cables
3. Use shielded cables
4. Install the mains filters.
8
WACS si riserva il diritto di apportare modifiche senza obbligo di preavviso - WACS reserves the right to make any changes it deems fit without notice - WACS se reserva el derecho de realizar modificaciones sin la obligación de aviso previo
UW
V
J7
J4
PUMP
2
RS
J2
R131
R132
R130
R148
R146
R147
R129
R145
R144
The PWM is already provided with current protections. If a thermal mag-
netic cut-out is installed on the line, this must have a capacity suited to
the pump used. The connection of the line to the PWM must include the
earth line. The total earth resistance must not exceed 100 Ohm.
A RCCB should be installed to protect the system, which
should be suitably sized, as follows: Class AS, with selec-
tive adjustable current dispersion, protected against inadvertent
activation. The automatic differential switch must be marked with
the following two symbols:
Connection to pump
The power supply voltage of the installed electric pump must be 400
V three-phase. Check the motor connection dataplate to ensure corre-
sponding specifications. The 400V power voltage is normally used with
a star configuration for pumps with outputs of less than 5.5KW, while
for outputs equal to or greater than 5.5 kW the delta configuration is
used (in any event always check pump dataplate or terminal board
specifications).
3 Typical connection for pumpsets with power rating below 5.5 kW
3 ~ 230 V
3 ~ 400 V
Incorrect connection
Correct connection
4 Typical connection for pumpsets with power rating equal to or higher
than 5.5 kW
3 ~ 400 V
3 ~ 680 V
Correct connection
Incorrect connection
VAR11
T
J8
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