IBO 3SDm - Cable Extension and Connection

The maximum, acceptable cable length dependent on the
diameter of cable cores of the power supply cable
Type of
power
supply
Power of the
supplied
motor
[kW]
1
mm
2
1.5
mm
2
2.5
mm
2
4
mm
2
6
mm
2
10
mm
2
16
mm
2
1x230 V
0.37
50
75
125
1x230 V
0.55
40
58
94
150
1x230 V
0.75
30
46
74
121
174
1x230 V
1.1
21
32
50
86
125
215
1x230 V
1.5
22
37
62
90
155
245
1x230 V
2.2
30
45
67
115
180
3x400 V
0.75
135
200
235
3x400 V
1.1
98
145
245
390
3x400 V
1.5
75
110
180
290
435
3x400 V
2.2
52
80
130
210
310
515
3x400 V
3
40
60
105
170
250
415
3x400 V
4
30
48
80
125
190
310
495
3x400 V
5.5
35
60
90
135
225
360
3x400 V
7.5
55
85
125
210
325
Not following the above instructions on cable selection can lead to pump operation
with too low voltage and consequent motor overload which can result in failure.
If the manufacturer equipped the pump with a short cable, then, it can be
extended according to the user needs. The hermetic connection of the cables
should be performed by a person with adequate knowledge and experience. The
user should assign such installation to a well fitter, or they can do it in the shop of
the well purchase. Unprofessional connection and insulation of the cables can
lead to automatic trigger of the residual-current devices, flooding motor with
water or electrocution of the user. Cable extension in types of pump equipped
with launching cable box may require its disassembly. Prior to disassembly, it is
recommended to check the connection of cable cores in the cable box and
connect the cable cores of the extension cable in the same way. Incorrect
connection can lead to motor failure, pump failure, pump operation with lowered
parameters. It is recommended that the extension of the power supply cable is
assigned to the guarantor or well fitter.
The cable box is separately delivered to some
types of pumps. There is a starting capacitor built in
the cable box as well as an overcurrent protection,
switch. The picture presents the diagram of cable
core connection of the power supply cable to the
connecting strip in the box. Cable cores of the
power supply cable are marked with small tags with
core no. When identifying cores with tags or colour,
connect them according to the diagram.
5
Capacitor
(ea
rthi
ng)
Po
we
r
su
ppl
y
23
0V/
50
Hz
~1