Manual Test Procedures According To En 60974-4 (Vde 0544-4); Table 42 Manual Test Procedures According To En 62353 (Vde 0751-1) - Benning ST 755+ Operating Manual

Appendix
13.2 Manual test procedures
Test
Device leakage
current:
Alternative leakage
current measuring
method
Direct / differential
current measuring
method
Patient leakage
current:
Alternative leakage
current measuring
method (AC)
Direct current
measuring method
(AC)
Functional test
Analysis, evaluation,
documentation
Table 42: Manual test procedures according to EN 62353 (VDE 0751-1)
13.2.3 Manual test procedures according to EN 60974-4
(VDE 0544‑4)
Test
Visual inspection for
visible defects:
• Torch / electrode
holder
• Mains supply
• Welding circuit
• Housing etc.
Testing the protective
conductor with regard to:
Continuity between the
earthing contact of the
mains plug and
accessible conductive
parts of the device / the
device connection
Measuring the insulating
resistance
5284 / 08/2023 en
Class I
Type B Type BF
≤ 1 000 µ ≤ 1 000 µ ≤ 1 000 µA
A A
≤ 500 µA
≤ 500 µA ≤ 500 µA
- ≤ 5 000 µ
A
-
≤ 5 000 µ
A
Functioning of safety equipment and functional test
(Inspection and preparation for intended use)
Class I
X
For cables with a rated current of
≤ 16.0 A:
For cables up to 5 m: ≤ 0.3 Ω
For additional meters (up to
7.5 m each), 0.1 Ω is added to
the limit up to a maximum value
of 1.0 Ω.
For cables with higher rated
currents, the calculated ohmic
resistance value shall apply.
Mains circuit to welding circuit:
≥ 5.0 MΩ
Welding circuit to protective
conductor circuit: ≥ 2.5 MΩ
Mains circuit to protective
conductor circuit: ≥ 2.5 MΩ
BENNING ST 755+ / ST 760+
Type CF Type B Type BF
≤ 500 µA ≤ 500 µA
≤ 100 µA ≤ 100 µA
≤ 50 µA - ≤ 5 000 µA
≤ 50 µA - ≤ 5 000 µA
Mains circuit to welding circuit:
Mains circuit to accessible
surfaces: ≥ 5.0 MΩ
Class II
Type CF
≤ 500 µA
≤ 100 µA
≤ 50 µA
≤ 50 µA
Class II
X
-
≥ 5.0 MΩ
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