60
GMC-I Messtechnik GmbH
20.3
Periodic Testing per BGV A3
– Limit Values for Electrical Systems and Equipment
Limit Values per DIN VDE 0701-0702
Maximum Permissible Limit Values for
Protective Conductor
Resistance
for Connector Cables with Lengths of up to 5 m
1)
This value may not exceed 1
for permanently connected data
processing systems (DIN VDE 0701-0702).
2)
Max. total protective conductor resistance: 1
Minimum Permissible Limit Values for
Insulation Resistance
* With activated heating elements (if heating power > 3.5 kW
and R
ISO
< 0.3 M
: leakage current measurement is required)
Maximum Permissible Limit Values for
Leakage Current
in mA
* For devices with heating power of greater than 3.5 kW
Note 1:
Devices which are not equipped with exposed parts that are con-
nected to the protective conductor, and which comply with re-
quirements for housing leakage current and, if applicable, patient
leakage current, e.g. data processing devices with shielded power
pack
Note 2:
Permanently connected devices with protective
conductor
Note 3:
Portable x-ray devices with mineral insulation
Key
I
B
Housing leakage current (probe or contact current)
I
DI
Residual current
I
SL
Protective conductor current
Maximum Permissible Limit Values for
Equivalent Leakage Current
in mA
1
For devices with heating power of greater than 3.5 kW
Test Standard
Test Current
Open-
Circuit Voltage
R
SL
Housing –
Mains Plug
VDE 0701-0702:2008
> 200 mA
4 V < U
L
< 24
V
0.3
1)
+ 0.1
2)
for each addi-
tional 7.5 m
Test Stan-
dard
Test Voltage
R
INS
PC I
PC II
PC III Heat
VDE 0701-
0702:2008
500 V
1M
2 M
0.25 M
0.3 M
*
Test Standard
I
PE
I
C
I
DI
VDE 0701-0702:2008
SC I: 3.5
1 mA/kW *
0.5
SC I:
3.5
1 mA/kW
*
SC II:
0.5
Test Standard
I
EL
VDE 0701-0702:2008
SC I: 3.5
1 mA/kW
1)
SC II: 0.5
