Gossen MetraWatt SECULIFE ST BASE 25, Руководство по эксплуатации

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Gossen Metrawatt GmbH 61
15.8.3 Device Leakage Current – IE
1
Adapter AT3-IIIE, AT3-IIS or AT3-II S32:
Voltage measuring inputs for leakage current measurement with differential
method only with test instrument including feature I01 (e.g. SECUTEST ST
PRO)
2
Voltage measuring inputs for leakage current measurement with differential
method and use of a current clamp sensor only with test instrument includ-
ing feature I01 (e.g. SECUTEST ST PRO)
Application
The measurement of device leakage current is required for electri-
cal medical devices in accordance with IEC 62353 / EN 62353 /
VDE 0751-1.
In the case of device leakage current as the sum of all leakage
current, all probe contact points must be contacted simultane-
ously.
Definition
Device leakage current is the sum of all leakage current from the
housing, accessible conductive parts and applied parts to PE.
Direct measuring method
–
Direct Measurement Type
– DUT mains plug to test socket
– Test probe P1 to P1 terminals
Schematic Diagram
The device under test (PC1) is operated with mains power.
Protective conductor current is measured between the protective
conductor at the mains (test instrument supply power) and the
protective conductor terminal at the DUT via the DUT’s mains
cable. The measurements must be performed with mains plug
polarity in both directions. Switching takes place via the polarity
softkey.
Accessible conductive parts which are connected to the housing,
as well as those which are not connected to the housing, must be
contacted with test probe P1.
If the DUT includes connectors for applied parts, they must be
short-circuited and contacted with test probe P1 as well.
Wiring Diagram
Differential Current Method
–
Differential measurement type
– DUT mains plug to test socket
– Test probe P1 to P1 terminals
Schematic Diagram, Protection Class I
The device under test (PC1) is operated with mains power.
Differential current which flows via the two mains conductors is
measured (current clamp measurement concept). The measure-
ments must be performed with mains plug polarity in both direc-
tions. Switching takes place via the polarity softkey.
Short-circuited terminals for applied parts or accessible conduc-
tive parts which are not connected to the housing must be con-
tacted with test probe P1.
Wiring Diagram, Protection Class I
Wiring Diagram, Protection Class II
Single Measurements, Rotary Switch Level: Green
Ro
ta
ry
Swi
tc
h
Po
si
ti
o
n
Meas. Type
With Mains to
Test Socket Meas. Type
Without
Mains to Test
Socket Measuring Functions
I
E
Direct
I
E
Device leakage current, RMS
I
E ~
AC component
I
E=
DC component
U
LN
Test voltage
Differential
I
E
Device leakage current, RMS
U
LN
Test voltage
Alternative
I
E
Device leakage current, RMS
U Test voltage
AT3 adapter
1
I
E
Device leakage current, RMS
U
LN
Test voltage
Clamp
2
I
E
Device leakage current, RMS
U
LN
Test voltage
I
E