Softstarters Type PSE18...PSE370 Installation and commissioning manual 1SFC132057M0201
34 Chapter 5
2T1 4T2 6T3
1L1
3L2
5L3
2T1 4T2 6T3
1L1
3L2 5L3
5.2.3 Connection of the operational power circuit
The softstarter is recommended to be connected with a line contactor as de-
scribed in figure 5.1. Additional
circuit diagrams will be found in Chapter 11 Wiring
diagrams.
Softstarters PSE18...PSE105 are provided with built-in cable clamps. The cables
must be stripped before connection, and the length of the exposed wire should
be 20 mm or 0.8 in. Connect according to figures 5.3 and 5.5.
For Softstarters PSE142...PSE370 the cables must have lugs and be connected
to the terminal bars, according to figure 5.4 and 5.5.
Connect the line side to terminals 1L1, 3L2, 5L3.
Connect the motor to terminals 2T1, 4T2, 6T3.
The terminals marking are printed on the front of the softstarter.
1SFC13275F0001
M8
PSE18...105
1L1
2T1 4T2 6T3
3L2 5L3
max
22 mm
(0.866 in)
max
20 mm
(0.787 in)
max
5 mm
(0.197 in)
11/6-16 UNF-2S
275 lb.in
PSE142...170
1L1
2T1 4T2 6T3
3L2 5L3
3/4-16 UNF-2A
375 lb.in
PSE210...370
1L1
2T1 4T2 6T3
3L2 5L3
2,5 .. 10 mm
2
ATK185: AWG4 to 300kcmil
Cu 75°C only
2x2,5 .. 2x10 mm
2
AWG12 .. 6
6 Nm - 53 lb.in
8 Nm - 71 lb.in
10 .. 70 mm
2
2x10 .. 2x70 mm
2
AWG6 .. 2/0
M6
9 Nm - 80 lb.in
Using connection module
Using connection bars
max
30 mm
(1.181 in)
max
30 mm
(1.181 in)
max
10 mm
(0.394 in)
M10
28 Nm - 240 lb.in
Using connection bars
max
24 mm
(0.945 in)
max
22 mm
(0.866 in)
max
8 mm
(0.315 in)
M8
18 Nm - 160 lb.in
Using connection bars
Using connection module
}
}
Cu 75
°C
only
ATK300: AWG4 to 400kcmil
ATK300/2: AWG4 to 500kcmil or
2xAWG4 to 2x500kcmil
Cu 75°C only
Using connection module
(If connection module is removed)
Figure 5.5: Tightening torques and dimensions for terminal bars and lugs
Figure 5.3: PSE18...PSE105 connection of the connection
module line side and motor side terminals
Figure 5.4: PSE142...PSE370 connection of the line side and
motor side terminals
Warning!
Capacitors for power factor compensation are not allowed between the
softstarter and the motor, since this can cause
current peaks which can
burn the
thyristors in the softstarter. If such capacitors are to be used, they
should be connected on the line side of the softstarter.
