Gossen Metrawatt GmbH
49
Test Procedure with Connection to the Test Socket
➭
Set the rotary switch to the
R
PE
position.
➭
Select measurement type or connection type, as well as test
current. After pressing the
Ip
key, you have direct access to
the test current parameters: each time this key is pressed, the
setpoint value shown in the measuring window is switched to
the next value.
➭
Connect the DUT to the test socket.
➭
Start the test:
Press the
START
/STOP
key.
➭
Contact all conductive parts which are connected to
the protective conductor with test probe P1.
During measurement, the
connector cable
only needs to be moved
to the extent to which it’s accessible during repair, modification or
testing.
If a change in resistance occurs during the manual step of the
continuity test, it must be assumed that the protective conductor
is damaged, or that one of the connector contacts is no longer in
flawless condition.
➭
The measured values are displayed. The measured
value recording icon shown at the right appears. Each
time this key is pressed, the currently displayed mea-
sured value is saved to buffer memory.
➭
End the test:
Press the
START
/STOP
key.
The save icon appears (floppy disk showing the num-
ber of measured values stored to buffer memory) and
prompts you to save the measured values to a test ob-
ject ID number.
➭
Read the measured values and compare them with the
table of permissible limit values.
➭
Press the
ESC
key in order to discard the measured
values stored to buffer memory and acknowledge by
pressing the key shown at the right.
Special Case: Testing Extension Cords
➭
Set the measurement type parameter to “PE(TS) – P1”.
➭
Connect the EL1 adapter to the P1 sockets at the test instru-
ment.
➭
Connect the plug at the end of the extension cord to the test
socket.
➭
Connect the coupling socket at the end of the extension cord
to the plug at the EL1 adapter.
➭
The test procedure is the same as described above.
Further options for testing extension cords are included in the
description of the single measurement in the EL1 rotary switch
position and under the integrated test sequences.
–
VDE 0701-0702-VLTG / ÖVE E 8701-VLTG / SNR 462638-
VLTG,
–
EN 50678-VLTG / VDE 0701-VLTG,
–
EN 50669-VLTG / VDE 0702-VLTG.
Special Case: Permanently Installed DUT
➭
Contact the conductive parts of the housing with test probe
P1.
Special Case: Testing Protective Conductor Resistance at PRCDs
For PRCDs whose protective conductor resistance cannot be
measured when switched off, the SECUTEST ST BASE(10) offers
the “active: PE(TS) - P1” measurement type, with which the
PRCD can be switched on in order to ascertain protective con-
ductor resistance.
➭
Set the measurement type parameter to “active: PE(TS) – P1”.
➭
Connect the EL1 adapter (or a standard test probe as an al-
ternative) to the P1 sockets at the test instrument.
➭
Connect the PRCD to be tested to the test socket via its plug.
➭
Connect the EL1 adapter to the outlet on the PRCD (alterna-
tive: connect the test probe to the protective conductor of the
PRCD’s outlet, e.g. by means of an alligator clip).
➭
Start the measurement.
➭
Switch line voltage to the test socket. Then switch the PRCD
on.
➭
Otherwise, the test procedure is the same as described
above.
Note
With the +200 mA=, -200 mA= and
200 mA= measure-
ment types, test current rises very slowly in order to pre-
vent triggering of residual current monitoring at the
PRCD. And thus with this measurement type, it may take
longer than usual until a valid measured value is dis-
played. For this reason, the protective conductor should
not be contacted manually with the test probe, in order to
prevent a sudden rise in test current resulting in inadver-
tent tripping of the PRCD.
Maximum Permissible Limit Values for Protective Conductor
Resistance with Connector Cable Cross-Sections of up to 1.5 mm²
1
Total protective conductor resistance: max. 1
Test Standard
R
PE
Housing – Device
Plug
R
PE
Housing – Mains
Plug
Mains Cable
IEC 60974-4 / EN
60974-4 / VDE
0544-4
EN 50678 /
VDE 0701
VDE 0701-0702 /
ÖVE E 8701 /
SNR 462638
0.3
+ 0.1
1
for each additional
7.5 m
or
+ 100 m
at >
1.5 mm² raw *l/A
IEC 62353 /
EN 62353 /
VDE 0751-1
0.2
0.3
0.1
IEC 62368 /
EN 62368 /
VDE 0868-1
IEC 62911 /
EN 62911 /
VDE 0868-911
0.1
Содержание SECULIFE ST BASE 25
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