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18/84 IZM circuit-breakers, IN switch-disconnectors
IZM26 tripping characteristics
2010 CA08103002Z-EN
www.eaton.comL protection: IEEE high inverse tripping, and S protection: flat characteristic curve
See Notes 3, 7, 8, 9, 23, 25, 28, 29.
L protection: IEEE extreme inverse tripping, and S protection: flat characteristic curve
See Notes 3, 7, 8, 9, 23, 25, 28, 29.
A Set values for overload protection
A Set values for overload protection
C Minimum total opening delay
C Minimum total opening delay
I
Available set values for short-time delayed short-circuit protection I
sd
I
Available set values for short-time delayed short-circuit protection I
sd
J Short-circuit release for very high currents
J Short-circuit release for very high currents
S Long delay time at 14 × I
r
S Long delay time at 14 × I
r
5 4 3
6 7 8 9 10
20 30 40 50 60 80 100
0.5 0.7 0.9
2
1 min
0.6 0.8 1
I/I
r
t
[s]
0.01
2
5
6
7
8
9
10
20
30
40
50
60
70
80
90
100
500
400
300
200
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
3
4
1230DIA-116 (70C1039)
0.50
J
0.1 - 0.5 s
(0.10,0.15,0.20, ...,
0.40,0.45,0.50)
C
0.4 - 1.0 x I
n
= I
r
(0.40, 0.45, 0.50, ..., 0.90, 0.95, 1.00)
A
4.50
4.00
3.50
3.00
2.50
2.00
1.50
1.00
0.80
0.60
0.50
0.40
0.30
0.20
5.00
0.2 - 5.0
(0.2, 0.3, 0.4, ..., 4.8, 4.9, 5.0)
S
I
1.5 - 10 x I
r
(1.5,2.0,2.5, ...,
9.0,9.5,10.0),
12/14 x I
r
5 4 3
6 7 8 9 10
20 30 40 50 60 80 100
0.5 0.7 0.9
2
1 min
0.6 0.8 1
I/I
r
t
[s]
0.01
2
5
6
7
8
9
10
20
30
40
50
60
70
80
90
100
500
400
300
200
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
3
4
1230DIA-117 (70C1040)
0.50
J
0.1 - 0.5 s
(0.10,0.15,0.20, ...,
0.40,0.45,0.50)
C
0.2 - 5.0
(0.2, 0.3, 0.4, ..., 4.8, 4.9, 5.0)
S
4.50
4.00
3.50
3.00
2.50
2.00
1.50
1.00
0.80
0.60
0.50
0.40
0.30
0.20
5.00
0.4 - 1.0 x I
n
= I
r
(0.40, 0.45, 0.50, ..., 0.90, 0.95, 1.00)
A
I
1.5 - 10 x I
r
(1.5,2.0,2.5, ...,
9.0,9.5,10.0),
12/14 x I
r
IZM26…(P)…