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25.2
Definite time non-directional overcurrent
protection (TOC)
4.
Compare the measured operating current with the set value IN>.
5.
Set the fault current to about 1.5 times the measured operating cur-
rent.
6.
Switch on the fault current and measure the operating time of the
TOC protection. Use the TOC--TRN signal.
7.
Compare the measured time with the set value tN.
Completing the test
Continue to test another function or complete the test by setting the test mode to off.
Chapter 13
Verifying settings by secondary
injection
145
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