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Functions
2.3 Directional Overcurrent Protection 67, 67N
[Lo_67N-TOC-1, 1, en_US]
Figure 2-29
Minimum Operating Time
The minimum operating time defines the minimum interval for tripping the inverse element. When an inverse
element picks up, an individual time 67-TOC-1MinO.T, 67-TOC-2MinO.T, 67-TOC-3MinO.T, 67-
TOC-4MinO.T, 67N-TOC-1MinO.T, 67N-TOC-2MinO.T, 67N-TOC-3MinO.T, 67N-TOC-4MinO.T starts.
The inverse element can only trip after the minimum operating time elapses.
120
Logic diagram of the directional overcurrent protection; example: inverse time overcurrent
element 67NTOC- 1, phases
SIPROTEC Compact, 7SC80, Manual
E50417-G1140-C486-A8, Edition 07.2017
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