3.3 Electrical connection
DANGER
Electric shock
Death or serious personal injury
‐
Switch off the power supply before you start any work
on the product.
‐
Make sure that the power supply cannot be switched
on accidentally.
DANGER
Electric shock
Death or serious personal injury
‐
The installation must be fitted with a residual-current
device (RCD) with a tripping current less than 30 mA.
DANGER
Electric shock
Death or serious personal injury
‐
Make sure that the power supply plug delivered with
the product is in compliance with local regulations.
‐
The plug must have the same protective earth (PE)
connection system as the power outlet. If not, use a
suitable adapter if allowed by local regulations.
DANGER
Electric shock
Death or serious personal injury
‐
Power cables without a plug must be connected to a
supply disconnecting device incorporated in the fixed
wiring according to the local wiring rules.
All electrical connections must be carried out by a quali-
fied person in accordance with local regulations.
Depending on local regulations, a pump with minimum 10
m of mains cable must be used if the pump is used as a
portable pump for different applications.
Make sure that the product is suitable for the supply voltage and
frequency available at the installation site. Voltage and frequency
are marked on the pump nameplate.
The pump must be connected to an external main switch. If the
pump is not installed close to the switch, the switch must be of a
lockable type.
Three-phase pumps must be connected to an external motor-
protective circuit breaker. The rated current of the motor-protective
circuit breaker must correspond to the electrical data marked on the
pump nameplate.
If a level switch is connected to a three-phase pump, the motor-
protective circuit breaker must be magnetically operated.
Single-phase and three-phase pumps incorporate thermal overload
protection and require no additional motor protection. Except for
UNILIFT KP 350, 3 x 200 V, 50 Hz, which must be connected to a
motor-protective circuit breaker.
If the motor is overloaded, it will stop automatically. When
the motor has cooled to normal temperature, it restarts au-
tomatically.
Three-phase pumps with a float switch, UNILIFT KP-A, must be
connected to the mains supply by means of a contactor. See the
figure below.
1
2
3
4
TM00201
1
Wiring diagram
Pos.
Description
1
Yellow and green
2
Grey
3
Brown
4
Black
M
N L
-
1
1~
2 3
TM1040337
Wiring diagram
Pos.
Description
1
Yellow and green
2
Blue
3
Brown
9
English (GB)
Summary of Contents for Unilift KP 150
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