4. Setting into operation
4-1
4.1 Setting into operation
The PGK 25 is designed in such a way, that no output current
is generated which could be harmful in case of body contact.
In the process of testing capacitive type test objects however,
dangerous charges may occur. In tests where charges of 350
mJ or higher are stored in items with which persons could
make contact, special protection measures are required to
avoid direct or indirect contact with live parts.
1) Connect instrument with protective earth lead (461-308) via
protective earth connector (7) with station earth.
2) Connect instrument and test object with H.V. cable (460-437).
3) Mains operation:
Connect instrument with power cord (554-005). Please pay
attention to selected mains voltage!
Battery operation:
Check battery voltage by pressing push-button switch (1). The
state of charge of the battery will be indicated by the kV meter.
In battery test, the needle must be within the marked range.
4) Set range selector switch (2) to the desired range (0-5 kV or
0-25 kV).
5) Set voltage regulator (3) to "0".
(Otherwise the instrument cannot be turned on).
6) Set range selector switch (4) of amperemeter to maximum
value (10 mA).
7) The high voltage will be turned on by the timer (5) and the
control lamp (11) will be on.
8) Now the high voltage can be set to the desired value by turning
the voltage regulator (3). The current range selector switch (4)
can also be adjusted.
9) Only now the timer (5) should be set to the desired operating
time. The insulation resistance of the test object, resulting from
current and voltage can now be determined by using the
attached chart.
10) Instrument shutdown; turn timer (5) completely counter-
clockwise; H.V. control lamp (11) will be off.
11) Once the H.V. lamp is off, the integrated discharge unit will
automatically be activated. The connected test objects
(capacities) will be discharged slowly via a resistor (125 k
Ohms). The discharge time at 6 µF is approximately 5
seconds.
Before touching the test object short-circuit test object and
connect it to earth!
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