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