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Principle & Technical data
MIG-FI Series Block diagram of principle shown as Figure 1
Input (3~380V/50Hz)
Output
Figure1: Block diagram of principle
This series welding machines apply IGBT soft switch inverter technology. 3-phase input volt
380V are rectified by rectifier, inverted into HF AC, reduced by HF transformer, rectified and
filtered by HF rectifier, then output DC power suitable for welding. After this process, the
welder’s dynamically responsive speed has been greatly increased, so the
welder size and
weight are reduced noticeably. Power source enjoys good anti-fluctuating ability and
high-quality performance.
MIG-E Series Volt-Ampere Curve as shown in Figure 2:
Figure 2: MIG-FI Series Volt-Ampere Curve
U (V)
-
80
-
60
-
40
-
20
-
0
U
2
=14+0.05I
2
I (A)
3 phase
Rectifier
HF
Inverter
HF
Transformer
Rectifier &
Filter
Control circuit
+
-
