Sonel PAT-1 - Page 58

OPERATING MANUAL PAT-1, PAT-2, PAT-2E, PAT-10 version 1.02
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leads can adversely affect the result of PE resistance measurement (R
PE
). In order to eliminate the
influence of the test leads' resistance on the result, it is advised to perform a test lead compensation
(auto-zeroing). The tester enables to perform automatic compensation of test leads. The auto-zeroing
procedure starts followed by pressing and holding SET/SEL button for approx. 3 seconds. This func-
tion is available when:
- the tester is in R
PE
200mA or R
PE
10A manual mode;
- the tester is in autotest mode for Class I appliances.
The compensation is common for all R
PE
(200mA, 10A – for PAT-10) tests, both in manual and au-
totest mode, regardless of the mode it was carried out in. The compensation remains in force even
after turning the tester on and off, until deactivated by the user, as described below.
During the test lead compensation procedure the PAT-10 tester must be connected to mains
power supply.
The test lead compensation procedure:
Press and hold SET/SEL button for approx.
3s (in autotest CL I or manual R
PE
mode).
The tester has
switched into the
test lead compensa-
tion mode.
icon is flashing.
Touch the PE pin of the T1 test socket with the probe connected to socket
T2.