9.4b Measuring touch current
(with devices of protection class II)
The limit value is 0.5 mA
The touch current can either be measured directly with the substitute
leakage current method or with the differential current method. This
measurement must also be carried out on devices of protection class I with
touchable conductive parts.
Measuring principle circuits
Touch current – substitute leakage current method PC II, Diagram M4b
Caution! The test object is supplied with mains voltage
during the test.
Tester
Test line
Test
object
19
Operating manual for the TG uni 1 appliance tester
Conducting tests in accordance with VDE 0701 and 0702 - definition of standards
Test socket
´Probe´
socket
9.5 Inspection the inscriptions
Safety-related inscriptions must be controlled and, where necessary,
renewed or supplemented in suitable form.
9.6 Function test (only required for DIN VDE 0701)
After completion of the electrical test, a function test shall be carried out on
the test object. A partial test can be sufficient.
9.7 Documentation
Once a test is passed, it should be documented in suitable form. If a test
object proves to be unsafe, this should be clearly indicated on the device
and the operator informed in writing. Recording the measured values and
the changes is recommended.
Touch current:
Direct measurement PC I, Diagram M8b
Direct measurement PC II, Diagram M8a
Test
object
Test line
Tester
Test
object
Test line
Tester
Measurement of all touchable conductive parts of the test
object that are not connected to the protective conductor
Insulated installation
Test socket
Socket
´Probe´
Test socket
Socket
´Probe´
Insulated installatio
