Load side Line side
Load side
Thyristor
1
Line side
Thyristor
Black Blue
Brown Red
-. Preparation heat sink and semiconductor.
• Clean all polished contact surfaces
carefully with Ethanol.
11.
• Drip couple drops silicone oil on
the cleaned contact surfaces, avoid
getting oil the guide hole.
Place the semiconductor the right direction.
• Lightly polish the contact surface f
semiconductor (the nickel layer must not
be polished through) with abrasive cloth
P600 which fix flat surface. Mount the guide pins the bottom heatsink. Then wipe the surface
in order get very thin layer oil. Smooth the
oil lightly over the whole surface using
lint-free paper.
13. Connect the gate cables. Rem ove the faulty thyristors.
• Lubricate directly after
polishing/cleaning, within minutes.
• void contact with surface.
12.
• Use well moistened lint-free paper.
The contact surfaces must dry before
lubrication.
• void contact with the surfaces after
lubrication.10. Check the semiconductor's symbol and type
specification
