English (GB)
9
7. Electrical connection
The electrical connection should be carried out by an authorised
electrician in accordance with local regulations.
The operating voltage and frequency are marked on the motor
nameplate. Make sure that the motor is suitable for the power
supply on which it will be used and the motor terminal connection
is correct. You will find a wiring diagram in the terminal box.
7.1 Cable entry/screwed connection
All motors are supplied without screwed cable entries. The table
below shows the numbers and sizes of cable entry holes of the
terminal box (standard: EN 50262).
7.2 Three-phase connection
1)
60 Hz motors, 0.37 - 1.1 kW: 220-277/380-440 V.
Fig. 13
Delta connection
Fig. 14
Star connection
If the motor is provided with PTC sensors or PTO contacts, the
connection must be in accordance with the wiring diagram in the
terminal box.
Three-phase motors must be connected to a motor-protective
circuit breaker.
Warning
The CR pump must be connected to an external
mains switch placed close to the pump and to a
motor-protective circuit breaker or a CUE frequency
converter. It must be possible to lock the mains
switch in OFF position (isolated). Type and
requirements as specified in
EN 60204-1, 5.3.2.
Warning
Before removing the terminal box cover and before
removing/dismantling the pump, make sure that the
power supply has been switched off and that it
cannot be accidentally switched on.
Caution
The user is to consider whether it is necessary to
install an emergency stop switch.
Motor
[kW]
Number and size
of cable entries
Description
0.25 - 0.55
2 x M20 x 1.5
The holes have precast
threads and are closed with
knock-out cable entries
0.75 - 3.0
2 x M20
The holes are closed with
knock-out cable entries
4.0 - 7.5
4 x M25
The holes are closed with
knock-out cable entries
11 - 18.5
2 x M20
4 x M40
The holes are closed with
knock-out cable entries
Mains supply [V]
Delta connection
Star connection
50 Hz
220-240
/
380-415
380-415
/
660-690
60 Hz
220-277
/
380-480
1)
380-480
/
660-690
TM
02
66
56
13
05
TM
02
66
55
13
05
W2
U2
V2
U1
V1
W1
U1
U2
V1
V2
W1
W2
L
3
L
2
L
1
W2
U2
V2
U1
U1
V1
V1
W1
U2
V2
W1
W2
L
3
L
2
L
1
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