Beha-Amprobe GT-650, Руководство пользователя

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GT-650/GT-900 User's Manual
39
IEC CORD Test (CORD/PRCD)
The IEC CORD test does a full test of IEC cords, extension leads, multiple sockets
and cable reels. Following parameters are tested and measured:

Visual inspection

Protective earth bond resistance R
PE

Insulation resistance R
INS
between PE and L/N conductors (L/N conductors are
shorted by the GT-650/GT-900 tester). Test voltage of 500 VDC is used for this
test.

L conductor continuity

N conductor continuity

L and N condition (OK/shorted).
Test procedure and instructions for testing standard IEC cords:
Set test parameters.
Select auto or manual start mode by using the “
F
: AUT/
F
: MAN” menu key. If
auto start mode is selected (AUT is displayed on upper display line), then the
test will start automatically after connecting the cord to be tested to test /
mains socket and to test connector CORD. START key is not active in this start
mode. If manual start mode is selected (MAN is displayed on upper display
line), then use the START key to start the measurement.

Select appropriate test current of R
PE
step (0.2 or 5.0 A) by using the “PAR” and
then “Im” menu keys. Confirm selected test current by pressing the “

” menu
key.

Adjust limit value (0.01 … 11.00

) of R
PE
step by pressing the “PAR” and then
“CALC” (calculation) menu keys. Enter appropriate SECTION and LENGTH of
tested cable and confirm them by pressing the “

” menu key, calculated limit
value will be offered. Modify it if needed by using the "+" and "-" menu keys,
then confirm it by pressing the “

” menu key. In order to enter the limit value
with "+" and "-" menu keys directly without calculation, press the " "
menu key first.
Note!
Compensation of test adapter shall not be carried out when testing standard
IEC cords (as no adapter is used), see the figure 31. The symbol “C” (compensated
(8)) must not be present on the upper line, see the figure 32 – right picture.
Test procedure (manual start mode).

Connect the IEC cord according to the figure below.

Press the START key, VISUAL INSPECTION step will be offered. Do the visual
inspection of tested cord and confirm the result by pressing the “OK” (visual
inspection passed) or “n.OK” (visual inspection failed) menu key.
Note!
Visual inspection (positive result) can be confirmed also directly by pressing the
START key instead of pressing the “OK” menu key.

R
PE
measurement starts to run after positive confirmation of visual inspection.
During the measurement flex the cord along its length to help find any broken
conductors or poor connection joints.
Press the STOP key when the cable is checked by flexing it.

R
INS
measurement will be carried out automatically after finishing R
PE
step.