
9-18 Troubleshooting
%5-"%.0*UNE
Heatsink3
Heatsink 2
Heatsink 1
SCR 2
SCR 1
Heatsink3
Heatsink 2
Heatsink 1
SCR 2
SCR 1
Figure 9.5 – Power Module Assembly (one phase) • 1000/1300/1500/2400 V, 180/360 A
Gap
Centre Nut
(Do not loosen)
Indicating Washer
Locking Nut
(Do not adjust)
(Do not loosen)
To remove clamp pressure, loosen
lower center nut so that the gap between
the clamp surface and the heatsink is
approximately 6 mm (0.25 in.).
Gap
Centre Nut
(Do not loosen)
Indicating Washer
Locking Nut
(Do not adjust)
(Do not loosen)
To remove clamp pressure, loosen
lower center nut so that the gap between
the clamp surface and the heatsink is
approximately 6 mm (0.25 in.).
Figure 9.6 – Heatsink Clamp
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