User Manual

GMC-I Messtechnik GmbH 37
8.9 Function Test – P
Schematic Diagram
Setting Measuring Parameters
The device under test can be subjected to a function test with
mains voltage via the integrated test socket.
The DUT is tested automatically for short-circuiting. The test
socket is switched to mains outlet.
In addition to testing with the selector switch in the function test
position, a function test can also be performed immediately after
safety testing has been passed in accordance with the selected
standard (not possible for protection class III devices).
Note
The function test can only be executed for DUTs which
are connected to the test socket.
Test Sequence
Attention!
!
The function test may only be performed after the DUT
has successfully passed the safety test.
Attention!
!
Refer to the safety precautions on page 7 with regard to
switching power consumers.
Attention!
!
Starting the Function Test
For reasons of safety, the device under test must be
switched off before the function test is started. This pre-
caution prevents inadvertent start-up of a DUT which
may represent a hazard during operation, e.g. a circular
saw or a disc grinder.
Ending the Function Test
After completion of the function test, DUTs must be
turned off with their own switch – especially devices with
relatively high inductivity.
➭ Set the rotary switch to the P position.
➭ Connect the DUT’s mains plug to the test instrument’s test
socket.
➭ Start the test: press the START/STOP key.
➭ Acknowledge the warning which indicates that line
voltage will be connected to the test socket.
➭ The measured values are displayed. The measured
value recording symbol shown at the right appears.
Each time this key is pressed, the currently displayed
measured value is saved to the buffer.
➭ Stop the test: press the START/STOP key.
The save symbol appears (floppy disk showing the
number of measured values stored to buffer memory)
and prompts you to save the measured values to an ID
number.
➭ 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.
Switch
Setting
Meas.
Variant
Measuring functions
Single measurements, rotary switch level: green
Measurements at DUTs with line voltage
P Function test at the test socket
I Current between L and N
U Voltage between L and N
f Frequency
P Active power
S Apparent power
PF Power factor
Measuring Parameter Meaning
Polarity
LN Phase L – neutral conductor N
NL Neutral conductor N – phase L
P