SACE EMAX 2 NEW LOW VOLTAGE POWER C I RCUI T BRE AKERS TO ANS I C37 / UL 1066 / CSA STANDARDS
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— Technical characteristics for protection trip units Protection functions
ABB Code ANSI Code Function
Threshold
Threshold step
Tripping time
Time Step 0.01s
OF2
81H
Overfrequency protection
f18 = 1.001….1.1 x fn 0.001 x fn
with f > f18, t18 = 0.15...300s
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 protection
I20 = 0.6...10 x In
0.1 x In
With I > I20, t20 = 0.05…30s
0.01s
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 Uh= 0.2…1 x Un
0.01 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)
RV
59N
Residual overvoltage protection U22 = 0.05….0.5 x Un 0.001 x Un
with U > U22, t22 = 0.5…120s
0.01s
Tolerance
± 5%
The better of the two data: ± 10% or ± 40 ms (for t<5s) / ± 100 ms (for t ≥ 5s)
OP
32OF
Active overpower protection
P26 = 0.4…2 Sn
0.001 Sn
with P > P26, t26 = 0.5…100s
0.5s
Tolerance
± 10%
The better of the two data: ± 10% or ± 40 ms (for t<5s) / ± 100 ms (for t ≥ 5s)
OQ
32OF
Reactive overpower protection Q27 = 0.4…2 Sn
0.001 Sn
with Q > Q27, t27 = 0.5…100s
0.5s
Tolerance
± 10%
The better of the two data: ± 10% or ± 40 ms (for t<5s) / ± 100 ms (for t ≥ 5s)
UP
32LF
Active underpower protection
P23 = 0.1...1 x Sn 0.001 x Sn
with P < P23, t23 = 0.5…100s
0.5s
Start up Tolerance
range: 0.1…30s
0.01s
± 10%
The better of the two data: ± 10% or ± 40 ms (for t<5s) / ± 100 ms (for t ≥ 5s)
RQ
40/32R
Loss of field or reverse reactive power protection Loss of field or reverse reactive power protection
Q24 = -1…-0.1 Sn 0.001 Sn
with Q > Q24, t24 = 0.5…100s
0.1s
Kq = -2…2
0.01
Q25 = -1…-0.1 Sn 0.001 Sn
with Q > Q25, t25 = 0.5…100s
0.5s
Kq2 = -2…2
0.01 0.01
Voltage minimum threshold
Vmin. = 0.5...1.2
Tolerance
± 10%
The better of the two data: ± 10% or ± 40 ms (for t<5s) / ± 100 ms (for t ≥ 5s)
S2(V)
51V
Voltage controlled overcurrent protection
I21 = 0.6...10 x In
0.1 x In
With I > I21, t21 = 0.05…30s
0.01s
Step mode
Ul2= 0.2…1 x Un
0.01 x Un
Ks2= 0.1…1
0.01
Linear mode
Ul2= 0.2…1 x Un 0.01 x Un Uh2= 0.2…1 x Un 0.01 x Un Ks2= 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) with f > f28, t28 = 0.5...10s
ROCOF
81R
Rate of change of frequency protection
f28 = 0.4….10 Hz/s 0.2 Hz/s
0.01s
Trip direction
up &/or down
Tolerance
± 5%
The better of the two data: ± 20% or ± 200 ms
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