Hydraulic Connections; Table 3: Current Absorption And Thermal Magnetic Circuit Breaker Sizing For Maximum Power; Table 4: Section Of 4-Wire Cable (3 Phases + Earth) - DWT WaCS PWM Serie Instrucciones De Instalación Y Mantenimiento

Current absorption and thermal magnetic circuit breaker sizing for maximum power
Supply voltage [V]
Max. motor current absorption [A]
Max. inverter current absorption [A]
Rated current of thermal magnetic circuit breaker [A]
Supply voltage [ 3 x V]
Max. motor current absorption [A]
Max. inverter current absorption [A
Rated current of thermal magnetic circuit breaker [A]
Supply voltage [ 3 x V]
Max. motor current absorption [A]
Max. inverter current absorption [A
Rated current of thermal magnetic circuit breaker [A]

Table 3: Current absorption and thermal magnetic circuit breaker sizing for maximum power

10 m 20 m 30 m
1,5 1,5 1,5
4 A
1,5 1,5 1,5
8 A
1,5 1,5 2,5
12 A
2,5 2,5 2,5
16 A
2,5 2,5 4
20 A
4 4 4
24 A
6 6 6
28 A
6 6 6
32 A
10 10 10
36 A
10 10 10
40 A
10 10 10
44 A
10 10 10
48 A
16 16 16
52 A
16 16 16
56 A
16 16 16
60 A
Table applicable to cables in PVC with 4 wires (3 phases + earth)
As regards the section of the earthing cable, refer to current standards.
2.2.2

Hydraulic connections

The inverter is connected to the hydraulic section by means of pressure and flow sensors. The pressure
sensor is always required, while the flow sensor is optional if operating in stand alone mode, and is
compulsory when creating multi inverter systems.
Both are mounted on pump delivery and connected by means of the relative cables to the respective inputs
on the inverter board.
Always fit a check valve on pump suction and an expansion vessel on pump delivery.
In all circuits subject to the risk of water hammer (for example irrigation systems with flow rate interrupted
suddenly by solenoid valves), fit a further check valve downline of the pump and mount the sensors and
expansion vessel between the pump and valve.
The hydraulic connection between the pump and sensors must not have branched sections.
Pipelines must be sized according to the type of electric pump installed.
ENGLISH
Cable section in mm²
40 m 50 m 60 m 70 m
1,5 1,5 1,5 1,5
1,5 2,5 2,5 2,5
2,5 4 4
4 4 6
4 6 6 10
6 6 10 10
6 10 10 10
6 10 10 10
10 10 10 16
10 10 16 16
10 10 16 16
10 16 16 16
16 16 16 16
16 16 16 16
16 16 16 16

Table 4: Section of 4-wire cable (3 phases + earth)

PWM 203
230 V
11,0
25,0
32
PWM 407
380 480
15,0 11,5
20,5 16,5
25 20
PWM 420
380 480
41,0 32,5
55,0 44,0
63 50
80 m 90 m 100 m
1,5 2,5 2,5
4 4 4
4 6 6 6
6 6 10 10
10 10 10
10 10 16
10 16 16
16 16 16
16 16 16
16 16 16
16 16 16
16 16 16
16 16 16
16 16 16
16 16 16
80
PWM 202 PWM 201
230 V 230 V
9,0
18,7
20
PWM 405 PWM 404
380 480 380
11,0 8,7 9,0
16 12,0 12,5
20 16 16
PWM 415 PWM 410
380 480 380
31,0 24,5 22,0
42,0 33,0 29,5
50 40 32
120 m 140 m 160 m 180 m
2,5 2,5 4
6 6 6 10
10 10 10 10
10 10 16 16
16 16 16 16
16 16 16 16
16 16 16 16
16 16 16 16
16 16 16 16
16 16 16 16
16 16 16 16
16 16 16 16
16 16 16 16
16 16 16 16
16 16 16 16
6,5
12,0
16
480
7,2
10,0
16
480
17,5
23,5
25
200 m
4 4
10
16
16
16
16
16
16
16
16
16
16
16
16
16