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Pc-Board NEFI04
The pc-board NEFI04 is the mains filter board of the MicorMIG 400.
Since week 49 2015 the varistors at the mains input had been replaced by types with higher voltage (S20K620).
Functions
-
mains filter
- mains detection
-
safeguarding control transformer (2 x 4.0A, 500V, slow)
Picture pc-board NEFI04
X1
X2
LP2
LP1
LP3
LP7
LP5
LP6
LP14
PE
LP15 (PE)
Schematic
2
1
3
LP15 PE
6
5
7
4
8
11
12
L2
L1
L3
14
U
+Uz
-Uz
X1-3
X1-1
X2-3
X2-1
SI1
SI2
mains