Siemens PM330 Hardware Installation Manual page 80

Service and maintenance
5.4 Replacing additional components
Removal steps for the middle current transformer
1. Loosen screw
2. Remove screws
3. Remove screws
4. Withdraw the connector
5. Remove the screws that are used to fasten the current transformer
6. Remove the current transformer.
NOTICE
When removing the current transformer avoid damaging the electronic modules
To avoid damaging the electronic modules in the vicinity of the current transformer, it is
helpful if the current transformer is removed from the device together with the upper and
lower busbars.
When placed down on a worktable, the two busbars can then be simply withdrawn from the
current transformer.
Installation steps for the middle current transformer
Installation is carried out the same as removal, but in the reverse order.
NOTICE
When installing the current transformer avoid damaging the electronic modules
To avoid damaging the electronic modules in the vicinity of the current transformer, it is
helpful if the busbars are first inserted in the current transformer. This operation can be
performed on a work table.
The current transformer - together with the upper and lower busbars - can then be installed
in the device.
Tightening torque for the screws:
①
●
③
●
④
●
⑤
●
⑦
●
⑧
●
⑪
●
Exceptions: Frame size JX, 400 V: 500 kW, 560 kW: 5 Nm
78
①
for the cover and remove it
③ ④
, and
⑦ ⑧
and
⑩
: 3 Nm
: 6 Nm
: 5.5 Nm
: 50 Nm
: 5 Nm
: Frame sizes GX, HX: 7 Nm, frame size JX: 3 Nm
: Frame sizes GX, HX, JX: 1.8 Nm
②
.
⑤ ⑥
from the busbar
⑨
from the busbar .
.
Hardware Installation Manual, 12/2018, A5E32844552B AF
.
⑪
.
Power Module PM330