Electrical connection
The electrical connections should be carried out by an authorized electrician.
To make sure the motor is suitable for the power supply, cables of the motor must be connected to
power supply according to the
on the terminal box and the motor nameplate.
figure
Motor shall be connected with a fast and effective motor starter, to ensure that the motor will not be
damaged by lack of phase, unstable voltage or overload. The motor shall be earthed reliably.
Before take apart the terminal box cover or dismantle pump, make sure that the power supply is
switched off.
Electrical connection and safety devices
The pump units should be connected to the power supply by the appropriately rated power cables
according to the motor ratings.
The pump units should always be equipped with safety devices as required in the standards (EN 809
and/or EN 60204-1) as well as by the national rules of the country where the pump is used.
Despite the rules of any country, the power supply to the pump unit must be equipped with at least
following electrical safety devices with appropriate ratings:
Emergency switch.
Circuit breaker (as a supply disconnecting (isolating) device as well as an overcurrent protective
device).
Motor overload protection.
Recommendation for Electrical Connection and Safety Devices
CAUTION
WARNING
13
Installation & Connection
Table 4
No.
Power
input (HP)
Cable
connection
Input
current (A)
Cable spec
(mm²)
Circuit
breaker (A)
Thermal
protector (A)
1
0.5
Y
1
0.75
5
1.2
2
0.75
Y
1.4
0.75
5
1.7
3
1
Y
1.8
0.75
5
2.2
4
1.5
Y
2.6
1.0
5
3.1
6
2
Y
3.5
1
10
4.2
8
3
Y
4.9
1.5
10
5.9
11
4
Y
6.3
1.5
10
7.6
13
5
∆
8.2
2.5
20
9.8
15
7.5
∆
11
2.5
20
13.2
16
10
∆
15
4
20
18
17
15
∆
21
4
25
25.2
18
20
∆
29
6
32
34.8
19
18.5
∆
35
10
40
42
20
25
∆
41
16
60
49.2
21
40
∆
55
16
60
66
22
50
Λ
68
25
80
81.6
23
60
Λ
82
35
100
98.4
25
75
Λ
100
70
160
120
26
100
Λ
134
70
160
160.8
27
120
Λ
160
90
200
192
380V / 60Hz
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