Page 46 - Sace Emax 2 Catalogue

3/22 SACE EMA X 2 LOW VOLTAGE AIR CIRCUIT-BRE AKERS

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Technical characteristics for protection

trip units

Protection functions

ABB Code ANSI Code Function Threshold Threshold Trip time Time Excludibility Excludibility Pre-allarm Trip curve Ekip Touch Ekip Hi-Touch Ekip G Touch Ekip G Hi-Touch
step Step trip
VU 47 Voltage unbalance protection U14 = 2…90% Un unbalance 1%Un with unbalance > U14, t14 = 0.5...60s 0.5s yes yes no t = k
Tolerance ± 5% The better of the two data: ± 10% or ±
40 ms (for t<5s) / ± 100 ms (for t≥5s)
UF 81L Underfrequency protection f12 = 0.9….0.999 x fn 0.001 x fn with f < f12, t12 = 0.06…300s 0.01s yes yes no t = k
Tolerance ± 1% (with fn ±2%) The better of the two data: ± 10% or ±
40 ms (for t<5s) / ± 100 ms (for t≥5s)
OF 81H Overfrequency protection f13 = 1.001….1.1 x fn 0.001 x fn with f > f13, t13 = 0.06…300s 0.01s yes yes no t = k
Tolerance ± 1% (with fn ±2%) The better of the two data: ± 10% or ±
40 ms (for t<5s) / ± 100 ms (for t≥5s)
RP 32R Reverse active power protection P11 = -1…-0.05 Sn 0.001 Sn with P > P11, t11 = 0.5…100s 0.1s yes yes no t = k
Tolerance ± 10% The better of the two data: ± 10% or ±
40 ms (for t<5s) / ± 100 ms (for t≥5s)
ABB: 47 Cyclical direction of the phases 1-2-3 or 3-2-1 yes only no -
Cyclical signalling
direction
ABB: 78 3phase Power factor PF3 = 0.5…0,95 0.01 yes only no -
Power signalling
factor
LC1/2 Current threshold LC1 =50%...100% I1 1% yes only no -
Iw1/2 LC2 =50%...100% I1 1% signalling
Iw1 = 0.1…10 In 0.01 x In
Iw2 = 0.1…10 In
Activation: up/down
Tolerance ± 10%
S2 50TD Time-delayed overcurrent protection I5 = 0.6...10 x In 0.1 x In With I > I5, t5 = 0.05...0.8s 0.01s yes yes no t = k
68 Zone selectivity t5sel = 0.04…0.2s 0.01s yes yes
Start up Activation: 0.6…10 x In 0.1 x In Range: 0.1…30s 0.01s yes
Tolerance ± 7% I ≤ 6 x In The better of the two data:
± 10% I > 6 x In ± 10% or ± 40 ms
D 67 Directional overcurrent protection I7 = 0.6...10 x In 0.1 x In with I > I7, t7 = 0.1...0.8s 0.01s yes yes no t = k
(forward &/or backward)
68 Zone selectivity t7sel = 0.1…0.8s 0.01s yes
Start up (forward &/or backward) Activation: 0.6…10 x In 0.1 x In Range: 0.1…30s 0.01s yes
Trip direction forward &/or backward
Minimum angle direction (°) 3.6, 7.2, 10.8, 14.5, 18.2, 22,
25.9, 30, 34.2, 38.7, 43.4, 48.6,
54.3, 61, 69.6
Tolerance ± 7% I ≤ 6 x In The better of the two data:
± 10% I > 6 x In ± 10% or ± 40 ms
UV2 27 Undervoltage Protection U15 = 0.5….0.98 x Un 0.001 x Un with U < U15, t15 = 0.05…120s 0.01s yes yes no t = k
Tolerance ± 2% The better of the two data: ± 10% or ±
40 ms (for t<5s) / ± 100 ms (for t≥5s)
OV2 59 Overvoltage protection U16 = 1.02….1.5 x Un 0.001 x Un with U > U16, t16 = 0.05…120s 0.01s yes yes no t = k
Tolerance ± 2% The better of the two data: ± 10% or ±
40 ms (for t<5s) / ± 100 ms (for t≥5s)
UF2 81L Underfrequency protection f17 = 0.9….0.999 x fn 0.001 x fn with f < f17, t17 = 0.15…300s 0.01s yes yes no t = k
Tolerance ± 1% (with fn ±2%) The better of the two data: ± 10% or ±
40 ms (for t<5s) / ± 100 ms (for t≥5s)
OF2 81H Overfrequency protection f18 = 1.001….1.1 x fn 0.001 x fn with f > f18, t18 = 0.15...300s 0.01s yes yes no t = k
Tolerance ± 1% (with fn ±2%) The better of the two data: ± 10% or ±
40 ms (for t<5s) / ± 100 ms (for t≥5s)
S(V) 51V Voltage controlled overcurrent I20 = 0.6...10 x In 0.1 x In With I > I20, t20 = 0.05…30s 0.01s yes yes no t = k
protection
Step mode Ul= 0.2…1 x Un 0.01 x Un
Ks= 0.1…1 0.01
Linear mode Ul= 0.2…1 x Un 0.01 x Un
Uh= 0.2…1 x Un 0.01 x Un
Ks= 0.1…1 0.01
Tolerance ± 10% The better of the two data: ± 10% or
± 40 ms (for t<5s) / ± 100 ms (for t≥5s)