Page 44 - Sace Emax 2 Catalogue

3/20 SACE EMA X 2 LOW VOLTAGE AIR CIRCUIT-BRE AKERS

—

Technical characteristics for protection

trip units

Protection functions

ABB Code ANSI Code Function Threshold Threshold Trip time Time Excludibility Excludibility Pre-alarm Trip curve Ekip Touch Ekip Hi-Touch Ekip G Touch Ekip G Hi-Touch
step Step trip
L 49 Overload Protection I1 = 0.4…1 x In 0.001 x In with I = 3 I1, t1 = 3...144 s 1s yes, with rating no 50...90% I1 step 1% t = k / I 2
plug L=off
Thermal Memory yes
Tolerance trip between 1.05 and 1.2 x I1 ± 10% I ≤ 6 x In / ± 20% I > 6 x In
49 Overload Protection I1 = 0.4…1 x In 0.001 x In with I = 3 I1, t1 = 3...144 s 1s yes, with rating no 50...90% I1 step 1% t = t1xaxb
Standard inverse SI: k=0.14 α=0,02 plug L=off If k -1
Very Inverse VI: k=13.5 α=1 I1
Extremely Inverse EI: k=80 α=2
Tolerance trip between 1.05 and 1.2 x I1 ± 10% I ≤ 6 x In / ± 20% I > 6 x In
S 50TD Time-delayed overcurrent protection I2 = 0.6...10 x In 0.1 x In With I > I2, t2 = 0.05...0.8s 0.01s yes yes no t = k
68 Zone selectivity t2sel = 0.04…0.2s 0.01s 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 +-40ms
51 Time-delayed overcurrent protection I2 = 0.6...10 x In 0.1 x In with I = 10 In, t2 = 0.05...0.8s 0.01s yes yes no t = k / I 2
Thermal Memory yes
Tolerance ± 7% I ≤ 6 x In ± 15% I ≤ 6 x In
± 10% I > 6 x In ± 20% I > 6 x In
I 50 Istantaneous overcurrent protection I3= 1.5...15 x In 0.1 x In With I > I3, instantaneous - yes (3) no no t = k
Start up Activation: 1.5…15 x In 0.1 x In Range: 0.1…30s 0.01s yes
Tolerance ± 10% ≤ 30 ms
68 Zone selectivity ≤ 30 ms yes
G 50N TD Earth fault protection I4 = 0.1...1 x In 0.001 x In with I > I4, t4 = Instantaneous 0.05s yes yes 50...90% I4 step 1% t = k
(1)
(with Vaux) + 0,1...1 s
68 Zone selectivity t4sel = 0.04…0,2s 0.01s yes
Start up Activation: 0.2…1 x In 0.02 x In range: 0.1…30s 0.01s yes
Tolerance ± 7% The better of the two data: ± 10% or
± 40 ms or 50ms with
t4 = instantaneous
51N Earth fault protection I4 = 0.1...1 x In 0.001 x In with I = 4 In, t4 = 0.1…1s 0.05s yes yes 50...90% I4 step 1% t = k / I 2
(1)
Tolerance ± 7% ± 15%
IU 46 Current unbalance protection I6 = 2…90% In unbalance 1%In with unbalance > I6, t6 = 0.5…60s 0.5s yes yes no t = k
Tolerance ± 10% The better of the two data: ± 10% or ±
40 ms (for t<5s) / +-100ms (for t≥5s)
2I 50 Programmable instantaneous I31 = 1.5…15 x In 0.1xIn with I>I31, instantaneous yes no no t = k
overcurrent protection (max setting 15kA)
Tolerance ± 10% ≤ 7ms (2)
MCR Closing on short-circuit protection I3= 1.5...15 x In 0.1 x In With I > I3, instantaneous 0.01s yes no no t = k
Monitor time range: 40…500ms
Tolerance ± 10% ≤ 30 ms
Gext 50G TD Earth fault protection I41 = 0.1...1 x In Toroid 0.001 x In with I > I41, t41 = 0.1…1s 0.05s yes yes 50...90% I41 step t = k
(1)
Toroid 1%
68 Zone selectivity t41sel = 0.04…0,2s 0.01s yes
Start up Activation: 0.1…1 x In 0.02 x In range: 0.1…30s 0.01s yes
Tolerance ± 7% The better of the two data:
± 10% or ± 40 ms
51G Earth fault protection I41 = 0.1...1 x In 0.001 x In with I = 4 In, t41 = 0.1…1s 0.05s yes yes 50...90% I41 step 1% t = k / I 2
(1)
Tolerance ± 7% ± 15%
Rc 64 50N TD Residual current protection I∆n = 3 - 5 - 7 - 10 - 20 - 30A with I > I∆n, t∆n = 0.06 - 0.1 - 0.2 - Available with no no t = k
87N Differential ground fault protection 0.3 - 0.4 - 0.5 - 0.8s rating plug Rc
Tolerance - 20% ÷ 0% 140ms @ 0.06s (max trip time)
950ms @ 0.80s (max trip time)
UV 27 Undervoltage Protection U8 = 0.5….0.98 x Un 0.001 x Un with U < U8, t8 = 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)
MDGF Modified Differential I41= 0.1…1 x In with I>I41, t41=0.05...1s (t=k) 0.05s yes yes 50...90% I41 step t = k
2
Ground Fault protection with I>I41, t41=0.1...1s (t=k/I ) 1% t = k / I 2
Tolerance ± 7% The highest of 15% or 15ms
OV 59 Overvoltage protection U9 = 1.02….1.5 x Un 0.001 x Un with U > U9, t9 = 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)