53
Exchange of Thyristors for Size D6
3ADW000195R0501 DCS800 Service Manual e e
Gate (4): Faston 2.8 x 0.8 mm
Cathode (5): Faston 4.8 x 0.8 mm
Conductive plate: Diameter 48 mm
Second thyristor type
Thyristor T 1xxx-24 with Id code 3ADC340098P0001
Second thyristor type
Gate (y): Round terminal D = 1.5 mm
Cathode (K
1
): Faston 4.8 x 0.5 mm
Conductive plate: Diameter 50 mm
BCT thyristors
In some converter modules size D6 so called BCT’s (Bidirectional-Controlled-
Thyristors) are used. BCT’s 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.
Faston 4.8 x 0.5
Gate A
Faston 6.3 x 0.8
Gate B
BCT. dsf
Gate A
Gate B
Gates of BCT
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