Werbung
Verfügbare Sprachen
Verfügbare Sprachen
VRD safety device
General
VRD is an additional safety device that prevents, as far as possible, output voltages that
may pose a danger to persons.
VRD = Voltage Reduction Device.
TP 125 VRD safe-
ty principle
VRD is active
VRD is not active
NOTE!
Within 0.
3 seconds after welding has finished:
► VRD is active again
► The output voltage is limited to 12 V again
Display when
voltage limiting is
not present
There is a risk of serious injury and damage from electrical voltage.
Make sure that the rod electrode does not touch any persons or electrically conducting or
earthed parts.
Flashing LEDs indicate that the VRD is inactive and that the welding voltage is present on
the current sockets.
WARNING!
Welding circuit resistance is greater than
the minimum human body resistance (grea-
ter than or equal to 200 Ohm):
-
VRD is active
-
Open circuit voltage is limited to 12 V
-
Example: no risk ensues if both wel-
ding sockets are touched accidentally
at the same time
Welding circuit resistance is less than the
minimum human body resistance (less than
200 Ohm):
-
VRD is inactive
-
Output voltage not limited in order to
ensure sufficient welding power
-
Example: start of welding
69
Werbung
