LORCH MicorMIG 350 - Page 14

page 14
Pc-Board NEFI05
The pc-board NEFI05 is the mains lter 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Since week 49 2015 the varistors at the mains input had been replaced by types with higher voltage (S20K620).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 lter
- mains detection
- safeguarding control transformer (2 x 4.0A, 500V, slow)
- power-up function
Picture pc-board NEFI05
X2 X1
LP2LP1 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
R7R8
9
10
RE1 RE2
mains