Page 78 - MCCB-XT2-XT4

ABB | SACE Tmax XT

Voltage protections Protection Trip threshold
[ANSI code] Trip time t t tolerance (3) Trip time tolerance
with t8 ≥ 5 s: ± 100 ms / with t8 < 5 s: the
UV [27] / UV2 [27] t = t8 (t15) ± 2 % (4)
t best between ± 10 % and ± 40 ms
with t9 ≥ 5 s: ± 100 ms / with t9 < 5 s: the
OV [59] / OV2 [59] t = t9 (t16) ± 2 % (4)
t best between ± 10 % and ± 40 ms
with t14 ≥ 5 s: ± 100 ms / with t14 < 5 s: the
VU [47] t = t14 ± 5 % (11)
t best between ± 10 % and ± 40 ms

Voltage Advanced protections Protection Trip threshold
[ANSI code] Trip time t t tolerance (3) Trip time tolerance
S(V) [51V] / S2(V) with t20 ≥ 5 s: ± 100 ms / with t20 < 5 s:
[51V] t = t20 (t21) ± 10 % the best between ± 10 % and ± 40 ms
t
with t22 ≥ 5 s: ± 100 ms / with t22 < 5 s:
RV [59N] t = t22 ± 10 %
t the best between ± 10 % and ± 40 ms

Frequency protections Protection Trip threshold
[ANSI code] Trip time t t tolerance (3) Trip time tolerance
with t12 ≤ 5 s: ± 100 ms / with t12 < 5 s:
UF [81L] / UF2 t = t12 (t17) ± 1 % (5) the best between ± 10 % (min = 30 ms)
[87L] t
and ± 40 ms
OF [81H] / OF2 (5) with t13 ≥ 5 s: ± 100 ms / with t13 < 5 s: the
[87H] t = t13 (t18) ± 1 % best between ± 10 % and ± 40 ms
t

Power protections Protection Trip threshold
[ANSI code] Trip time t t tolerance (3) Trip time tolerance
with t23 ≥ 5 s: ± 100 ms / with t23 < 5 s:
UP [32LF] t = t23 ± 10 %
t the best between ± 10 % and ± 40 ms
with t26 ≥ 5 s: ± 100 ms / with t26 < 5 s:
OP [32OF] t = t26 ± 10 %
t the best between ± 10 % and ± 40 ms
with t24 ≥ 5 s: ± 100 ms / with t24 < 5 s:
RQ [40 o 32R] t = t24 ± 10 %
t the best between ± 10 % and ± 40 ms
with t27 ≥ 5 s: ± 100 ms / with t27 < 5 s: the
OQ [32OF] t = t27 ± 10 %
t best between ± 10 % and ± 40 ms
with If ≤ 6 In: ± 7 with t7 ≥ 400 ms: ± 40 ms / with t7 < 400
D [67] t = t7 % / with If > 6 In: ms: ± 20 ms and ± 10%, whichever is the
t
± 10 % highest
with t11 ≥ 5 s: ± 100 ms / with t11 < 5 s: the
RP [32R] t = t11 ± 10 %
t best between ± 10 % and ± 40 ms

Startup
Protection Trip time t Trip threshold Trip time tolerance
[ANSI code] t tolerance (3)
S StartUp t = t7 startup ± 10 % The best between ± 10% and 40 ms
t
with t23 ≥ 5 s: ± 100 ms / with t23 < 5 s:
UP StartUp t = t23 startup ± 10 %
t the best between ± 10 % and ± 40 ms

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