72
Function over-
view
- Varistors provide protection against momentary overvoltage of the mains
- Capacitors and coils form an LC low-pass filter that moderates the parasitic fre-
quencies over 60 Hz
- Capacitors divert disturbances to earth and also between the phases
- Resistors discharge the line filter capacitors
Plug layout
LED checklist
Measuring points
Fig. 43 Connections on NF 3160 PC board
X1
X2
X3
X4
X5
X6
Pin Function
X1 L1 in, cable
X2 L1 out, cable
X3 L2 in, cable
X4 L2 out, cable
X5 L3 in, cable
X6 L3 out, cable
There are no LED indicators on NF 3160 PC board.
There are no measuring points on NF 3160 PC board.
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