KOLARC MX600 - VRD: Safety Principle

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VRD: Safety
principle
The welding circuit resistance is
greater than the minimum body
resistance (greater than or equal to
200 ohms):
- VRD is active
- Open circuit voltage is limited to
35 V
- Unintentional contact with the output
voltage does not pose any danger
The welding circuit resistance is less
than the minimum body resistance
(less than200 ohms):
- VRD is inactive
- No limitation of the output voltage
to ensure adequate welding power
- Example: welding start
Applies to MMA welding mode:
Within 0.3 seconds of the end of welding:
- VRD is active again
- Restriction of the output voltage to 35 V is ensured again
NOTE!
MX600/MX500/MX400 power sources comes with the standard VRD safety parameters.