b) Runback test
From the ‘CURRENT’ testing options screen press ‘IDMT’,then ‘RUNBACK’.
The runback test is started by: (i) cessation of current (ii) operation of the relay contacts (iii) by pressing
the START RUN BACK key, or (iv) the current-on time exceeding 600 seconds. The run back timer is
halted by pressing the STOP key, or if the runback time exceeds 600 seconds. A final display of the
runback time is then given, with the option to REPEAT the test or ESCAPE to the current test sub-menu
(figure 5).
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