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Pc-Board NEFI05
The pc-board NEFI05 is the mains filter board of the MicorMIG 500.
Since week 49 2015 the varistors at the mains input had been replaced by types with higher voltage (S20K620).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)
- power-up function
Picture pc-board NEFI05
X2
X1
LP2
LP1 LP3
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
24
28
26
25
27
RE1
RE2
R7
R8
9
10
RE1
RE2
mains