Benning ST 760 - Individual Tests: PRCD Test; PRCD Test Explanation and Application

62
15.13 PRCD test
VDE 0701-0702
VDE 0751-1 /
EN 62353
VDE 0544-4 /
EN 60974-4
Class
Class
Class
Class
Class
Class
Class
I
II
III
I
II
I
II
X
-
-
-
-
-
-
Explanation
A portable residual current protection device (PRCD) provides
protection against hazardous body currents in the downstream
circuit in case of direct contact. The rated value for the tripping
fault current is max. 30 mA.
After the visual inspection, the “PRCD” button is
available via the manual test according to “VDE
0701-0702, (Class I)”.
The following PRCD types can be tested using the
BENNING ST 755/ ST 760:
AC
A
F
B
B+
2-pin/ 3-pin
K
S
S+
The PRCD test may include the following test steps
(type-specific):
 PRCD
o tripping current for I nom. [mA] (at 0° and 180°)
o tripping time 1x I nom. [ms]
o tripping time 5x I nom. [ms]
o tripping time ½x I nom. [ms]
o contact voltage [V]
o functional test of the PRCD TRIP button
o functional test with disconnected conductor (L, N, PE)
In addition:
 RPE
 RInsu-IN (RInsu-1, LN<->PE)
 RInsu-OUT (RInsu-2, sec.<->PE)
 IPE
 ICont
Preconfigured test procedures for the following PRCD types are
integrated in the "Automatic" section (see chapter 11).
AUTO test no.
23
24
25
26
27
28
29
30
31
32
Name
PRCD
-S
PRCD
-S+
PRCD
-K
PRCD
-AC
PRCD
-A
PRCD
-F
PRCD
-B
PRCD
-B+
PRCD 2
-pin
PRCD 3
-pin
Visual
insp.
X
X
X
X
X
X
X
X
X
X
Connecti
on test
X
X
X
X
X
X
X
X
X
X
RPE
600 mA
X
X
X
X
X
X
X
X
RInsu-1/
RInsu-IN
X
X
X
X
X
X
X
X
X
X
RInsu-2/
RInsu-
OUT
X
X
X
X
X
X
X
X
X
X
IPE
X
X
X
X
X
X
X
X
X
X
ICont
X
PRCD
X
X
X
X
X
X
X
X
X
X
The PRCD test procedure automatically guides you through the
test steps that are specific for the respective PRCD type. The
current instructions are shown on the display of the appliance
tester.
The test socket is supplied with mains voltage.
PRCDs of type AC only detect pure sinusoidal currents
and are therefore no longer approved in Germany
according to VDE 0100-530.
Make sure that all plug connections are properly
connected to each other.
Application
Class I, PRCD test
Direct current measuring method
Connection diagram
VDE 0701-0702
 Insert the shock-proof plug of the portable residual current
protection device (PRCD) into the test socket of the appliance
tester.
 Connect the cable adapter to the shock-proof socket of the PRCD
and the cable adapter jack of the BENNING ST 755/ ST 760.
 The test sample is supplied with mains voltage.
 Follow the instructions shown on the display of the appliance
tester.
Measurement
 Connect the portable residual current protection device (PRCD)
according to the connection diagram.
 Select the corresponding PRCD type
(e. g. PRCD-A).
 Select an individual test.
"PRCD" is the default individual test procedure for a
portable residual current protection device.
In addition, the following individual tests can be carried
out:
RPE, RInsu-IN/OUT, IPE and ICont
 Tap the “Start” button.
 Follow the instructions shown on the display of the appliance
tester.
 Check the measured values for compliance with the prescribed
limits.
 Tap the “Stop” button to stop the test.
The “Test result” screen opens.