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1
1.1
1.2
124
Time delayed undervoltage protection (TUV)
Time delayed undervoltage protection (TUV)
Application
The time delayed undervoltage protection function, TUV, is applicable in all situations, where
reliable detection of low phase voltages is necessary. The function can also be used as a super-
vision and fault detection function for some other protection functions, to increase the security
of a complete protection system.
Function block
T UV
BLOCK
TRIP
BLKTR
STL1
VTSU
STL2
STL3
START
xx00000207.vsd
Chapter 6
Voltage
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