Vrd - Voltage Reduction Device - Fronius Trans Pocket 1500 Service Instructions Manual

VRD - Voltage
Reduction Device
(continued)
Fig.13b VRD is not active
Important! Within 0.3 seconds of the end of welding:
-
-
VRD is active again
The output voltage is once again limited to 12 V
Welding-circuit resistance is smaller than
the minimum human-body resistance
(smaller than 200 ohms):
- VRD is inactive
- No limitation of the output voltage, so
as to ensure sufficient welding power
- Example: Start of welding
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