Siemens SINAMICS SL150 Operating Instructions Manual page 97

To remove a thyristor, proceed as follows:
1. Withdraw the gate lead from the thyristor electronics.
2. Insert the setting gauge
3. Release the clamping bolt
4. Remove the thyristor with the gate lead facing forwards.
Installation
NOTICE
Injury when using an unsuitable tool
Using unsuitable tools can result in injury and/or equipment damage.
The spring stays preloaded by the setting gage.
● Always use the correct tools.
To install a thyristor, proceed as follows:
①
②
Figure 9-9
SINAMICS SL150 6SL38600UL432AA0Z
Operating Instructions Rev.201910281433 EXAMPLE
the thyristor is being replaced.
In this way you release the heat sink / thyristor assembly. The heat sinks and thyristors move
downwards until the heat sinks and thyristors are held at a defined position by holding bolts.
Note
The stack is fully released when the lowest heat sink is held by the holding bolt.
The holding bolts and the distances traveled are matched to each other so that you can
easily remove the thyristor from the clamped assembly after releasing the clamping bolt.
Expanding rivets
Thyristor
Heat sink with thyristor
①
in the groove of the guide bolt
③
using the reversible ratchet with socket spanner
③
Gate lead
④
Thyristor electronics
Maintenance
9.7 Repairs
②
on the stack section in which
④
.
97