Gossen Metrawatt GmbH
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15.12 Function Test – P
Schematic Diagram
Wiring Diagram
Setting Measuring Parameters for P
The following connection types are possible:
•
Test socket
•
CEE adapter (only for connection via
single-phase CEE or “caravan socket”)
•
AT3 adapter (AT3-IIIE, AT3-IIS, AT3-IIS32)
•
AT16DI/AT32DI
Note
These or similar adapters can be used for the function test (ini-
tial startup of the DUT), but measurement of apparent and
active power, power factor and current consumption is only
possible when the DUT is directly connected to the test socket
or via the CEE adapter (single-phase CEE socket only).
The device under test can be subjected to a function test with
mains voltage via the integrated test socket.
The test socket is tested for short-circuiting before switching to
line voltage (a statement resulting from the short-circuit test can
only be made regarding the DUT itself when a single-phase DUT
is being tested).
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 DUTs).
Test Procedure
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 41 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 startup 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.
➭
Switch the device under test on.
➭
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.
➭
Turn off the device under test.
➭
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.
➭
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.
Single Measurements,
Rotary Switch Level: Green
Ro
ta
ry
Swi
tc
h
Po
si
ti
o
n
Measuring Functions
Meas. Type
With Mains
to Test Socket
P
Function test at the test socket
Selection of polarity
for mains voltage
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
Normal / reversed
Selection of polarity for mains voltage to the test socket
P
Summary of Contents for SECULIFE ST BASE 25
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