ABB PSTX370 Service Manual page 51

4.3.3 Disconnect the main power cables
and the control cables
CAUTION
Always make sure that the power supply is
switched off before doing maintenance on the
Softstarter.
WARNING
When performing maintenance on the Softstarter,
an antistatic strap must be used. The antistatic
strap should be worn on the wrist, and be
connected to an electrical ground, to prevent
electrostatic discharge (ESD) damage to the
Softstarter.
1. Remove control cables
Mark the control cables prior to disconnecting
them to ensure proper re-connection.
1
Loosen the M3 screws using a slotted
screwdriver and disconnect the control cables from
the terminal block.
2. Mark main power cables
Mark the power cables prior to disconnecting
them.
1
Mark the main power cables on the top
terminals 1L1, 3L2 and 5L3 with 1, 3 and 5.
2
Mark the main power cables on the bottom
terminals 2T1, 4T2 and 6T3 with 2, 4 and 6.
3. Disconnect main power cables
1
Loosen (6x) Hexagon no. 8 M10x40
(including washers and square nuts).
2
Disconnect the main power cables from the top
terminals 1L1, 3L2 and 5L3.
3
Disconnect the main power cables from the
bottom terminals 2T1, 4T2 and 6T3.
1
2
1
3
2
| Service Manual | Service PSTX470...570
1SFC13105M0201
1
M3
4.3.3_1
2
4.3.3_2
Hexagon no. 8
1
M10x40
3
4.3.3_3
51
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