① Setting value of the long-time-delayed protection
② Delay time of the long-time-delayed protection
③ Switchover of the overload characteristic (I
4
t and VI, SI, EI)
④ Setting value of the short-time-delayed protection
⑤ I
2
t characteristic ON/OFF of the short-time-delayed protection
⑥ Delay time of the short-time-delayed protection
⑦ Setting value of the instantaneous protection
⑧ Setting value of the ground-fault protection
⑨ Switchover to the I²t characteristic of the ground-fault protection
LT Overload range
ST Short-time-delayed short-circuit protection range
INST Instantaneous short-circuit protection range
GF Ground-fault protection
Description
2.9Electronic trip unit ETU
3VA27 molded case circuit breakers & 3WL10 air circuit breakers
Equipment Manual, 10/2023, L1V30499596002-03 61
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