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P R OT E C T I O N S E T T I N G S S E T U P F O R E K I P TO U C H T R I P U N I T S
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Default protection settings
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Example of study in EDSA
Protection Function
Long Time Protection
L Protection Overload (49)
Short Time Protection
S Protection Selective Short Circuit
(51/50TD)
Instantaneous Protection
I Protection Short Circuit (50)
Ground Fault Protection
G Protection Earth Fault
(51N/50NTD)
*Protection must be Enabled=ON to input the settings.
—
Example of study in EDSA
Protection Function
Long Time Protection L Protection
Overload (49)
Short Time Protection
S Protection Selective Short Circuit
(51/50TD)
Instantaneous Protection
I Protection Short Circuit (50)
Ground Fault Protection
G Protection Earth Fault
(51N/50NTD)
UL version: t2 Max = 0.4s
1
I3 threshold must be higher than I2 (if S Enabled = ON)
2
—
Example of study in EDSA
CB: UPS-B-Load 1
MFR
Model
Size
Rating
Cont. Amp
3-Phase kA
LG kA
Base kV
Trip
Frame
Enabled
Enabled
XT2 & XT4
XT5
ON
-
XT7/XT7M
Emax 2
XT2 & XT4
XT5
OFF*
ON
XT7/XT7M
Emax 2
XT2 & XT4
XT5
ON
-
XT7/XT7M
Emax 2
XT2 & XT4
XT5
OFF*
ON
XT7/XT7M
Emax 2
Frame
Threshold / Pickup Range
XT2 & XT4
XT5
0.4 x In to 1 x In; in 0.001 In steps
XT7/XT7M
Emax 2
XT2 & XT4
XT5
0.6 x In to 10 x In; in 0.1 In steps
XT7/XT7M
Emax 2
XT2 & XT4
XT5
1.5 x In to 15 x In; in 0.1 In steps (2)
XT7/XT7M
Emax 2
XT2 & XT4
0.1 x In to 1 x In; in 0.001 In steps
XT5
XT7/XT7M
0.1 x In to 1 x In; in 0.001 In steps (3)
Emax 2
ABB
XT5-N
400
65 kA, 0.24kV
400.00
10.28 Sym. (Calc.)
8.24 Sym. (Calc.)
0.208 Sym. (Calc.)
Function /
Threshold /
Time / Delay
Curve
Pickup
t1 = 12 seconds
t1 = 48 seconds
t = k/I2
I1= 1 x In
t1 = 144 seconds
t1 = 144 seconds
I2 = 2 x In
t2 = 0.1 seconds
t = k
I2 = 4 x In
t2 = 0.05 seconds
I2 = 2 x In
t2 = 0.1 seconds
I3 = 5.5 x In
-
-
I3 = 4 x In
t4 = 0.1 seconds
t = k
I4 = 0.2 x In
t4 = 0.4 seconds
t4 = 0.1 seconds
UL version: I4 Max = 1200A
3
UL version: t4 max = 0.4s
4
LV Solid state trip device
MFR
ABB
Model
XT5-Ekip DIP LSI (UL)
Sensor
400A
Long-time
Phase setting
Short-time
INST
Thermal
Pre-alarm
Memory
OFF
90% I1
-
-
-
-
90% I4
-
-
Time / Delay Range
3 - 60 s in 1s steps
3 - 48s in 1s steps
3 - 144s in 1s steps
3 - 144s in 1s steps
0.05 - 0.4s in 0.01s steps
0.05 - 0.8s in 0.01s steps (1)
0.1 - 1.0s in 0.05s steps (4)
LT Pickup
1.00 Multiples
LT Band
36
ST Pickup
3.5
ST Band
0.1 I
∧
xt=IN
Ins. Pickup
7.5
5
-
-
-
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