7.4 CHECK THE OPERATING TIME
Check that the operating time recorded by the timer is within the setting in the tDiff cell. Allowance must be
made for the accuracy of the test equipment being used.
Note:
For Definite Time characteristics there is an additional delay of up to 0.02 seconds. You may need to add this the
IED's acceptable range of operating times.
Caution:
On completion of the tests, you must restore all settings to customer
specifications.
MiCOM P747 Chapter 14 - Commissioning Instructions
P747-TM-EN-1 361
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