67
66
Characteristic curve of distribution protection electronic type release
Curves and Parameters
Characteristic curve of SU20L basic type release
Characteristic curve of SU20S standard type release
0.001
0.01
0.1
1
10
100
1000
10000
1
10
I/In
50ms
t
(s)
Instantaneous
Ii = (OFF/2/3/4/6/8/10/12) In
10ms
2
12
0.001
0.01
0.1
1
10
100
1000
10000
0.5
5
t
(s)
x/Ir
0.1s
1 1.5 10
Long time
delay
Ir= (0.4/0.5/0.6/0.7/0.8/0.9/0.95/1) In
Tr = (3/6/12/18)s
Short time
delay
I
Sd
=(OFF/1.5/2/3/4/6/8/10)Ir
T
Sd
=(0.1/0.2/0.3/0.4)s
0.4s
0.2s
0.3s
6s
3s
12s
18s
0.001
0.01
0.1
1
10
100
1000
10000
1
10
I/In
50ms
t
(s)
Instantaneous
Ii = (1.5~12) In
10ms
2
12
0.001
0.01
0.1
1
10
100
1000
10000
0.5
5
t
(s)
x/Ir
0.1s
1 1.5 10
Long time delay
Ir= (0.4~1) In Tr= (3~18)s
Short time delay
I
Sd
=(1.5~10)Ir T
Sd
=(0.1~0.4)s
0.4s
0.2s
0.3s
0.001
0.01
0.1
1
10
100
1000
0.1
1
t
(s)
I/In
Grounding
protection
Ig=(0.4~1)In
Tg=(0.1~0.4)s
0.1s
0.4s
0.3s
0.2s
0.4
Curves and Parameters
Characteristic curve of SU20SM standard type release
Characteristic curve of SU20LM basic type release
0.001
0.01
0.1
1
10
100
1000
10000
0.5
5
t
(s)
x/Ir
1 1.5
Long time
delay
Ir= (OFF/0.4/0.5/0.6/0.7/0.8/0.9/1)In @7.2Ir
Class=(5/10/20/30)
Class5
Short time
delay
I
sd
= (OFF/5/6/8/9/10/11/12)Ir T
sd
= 0.1s
0.1s
Class10
Class20
Class30
0.001
0.01
0.1
1
10
100
1000
10000
1
10
I/In
t
(s)
Instantaneous
Ii = 15 In
50ms
10ms
15
0.001
0.01
0.1
1
10
100
1000
10000
0.5
5
t
(s)
x/Ir
1 1.5
Long time
delay
Ir= (0.4~1) In @7.2Ir
Class=(5/10/20/30)
Class5
Short time
delay
I
Sd
= (4~12)Ir T
Sd
= 0.1s
0.1s
Class10
Class20
Class30
0.001
0.01
0.1
1
10
100
1000
10000
1
10
I/In
t
(s)
Instantaneous
Ii = 15 In
50ms
10ms
2
15
0.4
0.001
0.01
0.1
1
10
100
1000
0.1
1
t
(s)
x/In
Grounding
protection
Ig=(0.4~1)In
Tg=(0.1~0.4)s
0.1s
0.4s
0.3s
0.2s
Characteristic curve of motor protection electronic type release