Replacing A Thyristor - Siemens SINAMICS GL150 Operating Instructions Manual

Maintenance
9.7 Repairs
9.7.6.3

Replacing a thyristor

The tool set provided contains the following parts:
● Open-ended wrench
● Socket wrench
● Contact oil "Cramolin Schutz" (international name "Cramolin Protection")
Note
Selecting replacement thyristors
Use only the approved thyristor types for the mounting location. Observe the equipment
installation log when replacing the thyristor.
Danger when not complying with the five safety rules
Work must only be performed on adequately grounded power unit. Non-observance of the five
safety rules can cause death or serious injury. Serious material damage can also result.
● Observe the five safety rules.
You can replace thyristors within 5 minutes using simple tools. Plastic holders support the
thyristors against the heat sinks. The heat sinks are suspended on springs. A cup-spring
assembly produces the necessary clamping force in the stack.
144
DANGER
SINAMICS GL150 6SL38555UN113KA0Z
Operating Instructions Rev.201910281450 EXAMPLE