Circutor AFQ Series Uživatelský manuál Strana 65

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AFQ-4W
Instruction Manual 65
5.2. COOLING TURBINES AND FANS
The cooling fans and turbines must work properly to avoid
overheating in the active filter components.
Table 11 gives the number of fans and/or turbines required to cool the inductors
and the semiconductors according to the active filter model.
AFQ model
Inductor
cooling fans
IGBT cooling fans
IGBT cooling
turbines
AFQ-4W-25 A
3
2
-
AFQ-4W-50 A
3 4 -
AFQ-4W-100 A
3 - 1
AFQ-4W-150 A
6
-
2
AFQ-4W-200 A
6
-
2
Table 11 : Cooling components depending on the active filter model.
The following symptoms in the behaviour of the filter can indicate wear in the
fans or turbines:
Increased noise in the fan / turbine.
Increased temperature in the unit under the same environmental
conditions and load.
The AFQ-4W periodically indicates the temperature alarm.
If any sign of wear is detected, the affected fan/turbine should be replaced.
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