Operation Manual

MI 3310 / MI 3310A SigmaGT Measurements
70
 For more information refer to chapter Measurements according to IEC/ EN
60974-4, paragraph Insulation resistance (supply circuit to protective circuit)
in 3-phase adapter user manual.
Result screens:
Examples of Insulation LN-PE measurement results
Displayed results:
Main result ............. Insulation resistance LN-PE
Note:
 Consider displayed warnings before starting measurement!
5.3.3 Insulation resistance (welding circuit to protective circuit)
The insulation resistance test checks the resistance between the welding circuit
(outputs) and the protective circuit (protective earth) of the welding machine.
The instrument measures the insulation resistance between:
- mains test socket‘s PE terminal and W1/ W2 terminals on 3-phase adapter
(A1422).
Insulation W-PE menu
Test parameters for insulation resistance W-PE measurement
OUTPUT Test voltage [500 V]
LIMIT
Minimum resistance [2.50 M, 5.00 M, 10.0 M, none]
TIME Measuring time [2 s, 3 s, 5 s, 10 s, 30 s, 60 s, 120 s, 180 s, none]
Test circuit and measurement procedure for insulation resistance W-PE
measurement