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Before use
Before use, thoroughly test the insulation resistance of the electronic pump's stator winding (including outgoing cable) to the pump casing with a 500V
megohmmeter, and the cold insulation resistance should be not less than 100 MO.
The electric pump shall be connected to the power source for trial operation before entering into water. The time shall not exceed 3 seconds. The cable lines of
single-phase water pump shall be connected according to the wiring diagram on the electric machine or control cabinet strictly with correct colours. Incorrect
wiring will cause the pump to work abnormally or even damage the electric machine. Three-phase water pump can be connected without differentiating cable
colours.
A power line can be added with rather distant power supply. Please select proper cable lines according to the below tables to avoid selecting a cable that is
too thin that will lead to abnormal operation.
Single phase motor
0.25
0.37
0.55
0.75
0.92
Three phase motor
0.37
0.55
0.75
18.5
Choose the required cutting area of cable according to the power of the pump and length of the external cable to ensure
the normal operation of the motor.
3
Cable length / Cross-sectional area of conductor (mm
kW
0-15m
0.75
0.75
0.75
0.75
1.0
1.1
1.0
1.5
1.25
1.8
1.5
2.2
1.5
2.6
2.0
3.0
2.0
Cable length / Cross-sectional area of conductor (mm
kW
0-20m
0.75
0.75
0.75
1.1
0.75
1.5
1.0
2.2
1.25
2.6
1.25
3.0
1.5
4.0
2.0
5.0
2.0
5.5
2.5
7.0
2.5
7.5
3.0
9.2
3.0
11
4.0
13
4.0
15
5.0
5.0
22
6.0
26
6.0
30
8.0
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220-240V 50/60Hz
16-30m
31-45m
46-60m
0.75
0.75
0.75
0.75
0.75
1.0
1.0
1.25
1.25
1.25
1.25
1.5
1.5
2.0
2.0
2.0
2.0
2.5
2.5
2.5
2.5
3.0
380/415V 50/60Hz
21-40m
41-60m
61-80m
0.75
0.75
0.75
1.0
1.0
1.0
1.0
1.25
1.25
1.25
1.5
1.5
1.5
2.0
2.0
2.0
2.5
2.5
2.5
3.0
3.0
3.0
3.0
4.0
4.0
4.0
4.0
5.0
5.0
5.0
5.0
6.0
6.0
6.0
6.0
6.0
6.0
8.0
8.0
8.0
8.0
10.0
)
2
61-75m
76-90m
0.75
1.0
1.25
1.0
1.25
1.25
1.25
1.25
1.5
1.25
1.5
1.5
1.5
1.5
2.0
1.5
2.0
2.0
2.0
2.5
2.5
2.5
2.5
3.0
2.5
3.0
4.0
3.0
4.0
4.0
4.0
4.0
5.0
)
2
81-100m
101-120m
1.0
1.0
1.25
1.0
1.25
1.25
1.25
1.25
1.5
1.25
1.5
1.5
1.5
1.5
2.0
2.0
2.0
2.5
2.0
2.5
2.5
2.5
2.5
3.0
3.0
3.0
4.0
3.0
4.0
4.0
4.0
4.0
5.0
4.0
5.0
5.0
5.0
5.0
6.0
5.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
8.0
6.0
8.0
8.0
8.0
8.0
10.0
8.0
10.0
10.0
10.0
10.0
6.0x2
10.0
6.0x2
8.0x2
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