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