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Appendix
13.2 Manual test procedures
Test /
test no.
Protection class
Visual inspection
Connection test
R
600 mA
PE
R
/ R
Insu-1
R
Insu-2
R
Insu-3
I
Cont
I
Cont weld.
Funct.
U
a weld.
Table 40: Overview of test procedures according to EN 60974-4 (VDE 0544‑4) for Class I (1 to 3) /
Class II (1)
13.2
Manual test procedures
13.2.1
Manual test procedures according to EN 50678
(VDE 0701) and EN 50699 (VDE 0702)
Test
Visual inspection for
visible defects:
• Connecting cables /
plug connections
• Housing, strain relief,
protection against
bending and kinking
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
Measuring the protective
conductor current
5284 / 08/2023 en
1
X
X
X
X
Insu‑IN
X
X
X
X
X
X
For cables with a rated current of ≤ 16.0 A:
For additional meters (up to 7.5 m each),
0.1 Ω is added to the limit up to a maximum
For cables with higher rated currents, the
calculated ohmic resistance value shall
For proving safe isolation: ≥ 2.0 MΩ
For devices with heating elements:
For devices with heating elements and a
≤3.5 mA on conductive components with
PE connection: 1 mA/ kW to max. 10 mA
for devices with heating elements and a
BENNING ST 755+ / ST 760+
2
Class I
X
X
X
X
X
X
X
X
X
X
Class I
X
For cables up to 5 m: ≤ 0.3 Ω
value of 1.0 Ω.
apply.
Generally: ≥ 1.0 MΩ
≥ 0.3 MΩ
power of > 3.5 kW: ≥ 0.3 MΩ
total power of more than 3.5 kW
3
1
Class II
X
X
X
X
X
-
X
X
X
X
X
X
X
-
X
X
X
X
X
X
Class II
Class III
X
X
-
-
≥ 2 MΩ
≥ 0.25 MΩ
-
-
107
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