PROTECT ION TR I P UNI TS
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Trip Time
Time Step
Excludability
Excludability trip Pre-Allarm
Curve
Stability voltage time for live state = 100…30000ms Minimum matching time = 100…3000ms
0.001 s 0.01 s
yes
only signaling no
tref = 0.1…30 s
0.1 s
yes
only signaling no
yes yes yes
t41 = 0.1…1 s
0.05 s 0.01 s 0.01 s 0.05 s 0.05 s
yes yes yes yes yes
yes
50…90% I41 step 1% t = k
t41sel = 0.04…0.2 s
Range: 0.1…30s
t41 = 0.1…1 s with I = 4 x In
yes yes
50…90% I41 step 1% t = k/I 2 50…90% I41 step 1% t = k
t41 = 0.05-0.4 s
t41 = 0.1-0.4 s
0.05 s
yes
yes
50…90% I41 step 1% t = k/I 2
tΔn = 0.06 – 0.1 – 0.2 – 0.3 – 0.4 – 0.5 – 0.8 s
no
no
t = k
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