ABB PST30 Installation And Maintenance Manual page 25

B3
B2
B1
Figure 4: External bypass contactor
connection
Figure 5: Protective earthing.
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Chapter 5
Connection
5:2.1.1 External Bypass contactor
An external by-pass contactor can be used for softstarter sizes PST30...300 (built in for
PSTB370...1050).
Connect the contactor to terminals B1, B2 and B3 on the line side and terminals 2T1, 4T2
and 6T3 on the motor side.
The terminal markings are printed on the front label.
Do not use terminals B1, B2 or B3 for the "Inside Delta" connection. The current
measurement will be wrong.
5:2.1.2 Protective earthing
Softstarters type PST85...PSTB1050 should be earthed using the terminals as shown in
Figure 5 (one connection is sufficient).
Do not operate machine with the grounding wire disconnected
PST 30...72
1L1 3L2 5L3
B1 B2
2T1 4T2 6T3
PST 85...142
1L1 3L2 5L3
B1 B2
2T1 4T2 6T3
PST 175...300
1L1 B1 3L2 B2 5L3 B3
2T1 4T2 6T3
PSTB 370...470
1L1 3L2 5L3
2T1 4T2 6T3
PSTB 570...1050
1L1 3L2 5L3
2T1 4T2 6T3
Information!
Warning!
4 mm
B3
M8
6 Nm - 53 lb.in
B3
M8
9 Nm - 80 lb.in
M8
18 Nm - 160 lb.in
M10
40 Nm - 354 lb.in
M12
45 Nm - 443 lb.in
Figure 6: Tightening torques and cable sizes
5
2
1 x 6 ...... 70 mm
2
2 x 6 ...... 35 mm
WG 1...8
2
1 x 6 ...... 70 mm
2
2 x 6 ...... 35 mm
14
5.3
1SXU 132 021 M0201