48
Exchange thyristors size H7
3ADW000488R0101 DCS880 Service manual e a
Bidirectional-Controlled-Thyristors (BCTs)
In some converter modules size H7 so called BCTs (Bidirectional-Controlled-Thyristors) are used. BCTs are a
pair of anti-parallel thyristors in one disk type housing. They can easily identified by the second pair of gate
leads. The second gate is marked with Gate B on the thyristor:
Note:
The Faston connectors of the gates are of different size.
Gate A should always be in front of the clamped heat sinks due to cooling reasons. Location of BCTs gate A
when built in:
To Next Page
Loading...
