.27..26.
13.1 Selective protection between NM8 and NA1
0.4~6
0.4~6
0.4~6
0.4~6
0.4~6
0.414~6
0.4416~6
0.5224~6
0.552~6
0.6624~6
0.69~6
0.828~6
0.8694~6
1.035~6
1.104~6
1.325~6
1.38~6
1.656~6
1.725 ~6
2.07~6
1.38~6
1.656~6
2.208~6
2.65~6
2.76~6
3.312~6
3.45~6
4.14~6
0.63~9.45
0.63~9.45
0.63~9.45
0.63~9.45
0.63~9.45
0.63~9.45
0.63~9.45
0.63~9.45
0.63~9.45
0.6624~9.45
0.69~9.45
0.828~9.45
0.8694~9.45
1.035~9.45
1.104~9.45
1.325~9.45
1.38~9.45
1.656~9.45
1.725~9.45
2.07~9.45
1.38~9.45
1.656~9.45
2.208~9.45
2.65~9.45
2.76~9.45
3.312~9.45
3.45~9.45
4.14~9.45
0.8~12
0.8~12
0.8~12
0.8~12
0.8~12
0.8~12
0.8~12
0.8~12
0.8~12
0.8~12
0.8~12
0.828~12
0.8694~12
1.035~12
1.104~12
1.325~12
1.38~12
1.656~12
1.725~12
2.07~12
1.38~12
1.656~12
2.208~12
2.65~12
2.76~12
3.312~12
3.45~12
4.14~12
1~15
1~15
1~15
1~15
1~15
1~15
1~15
1~15
1~15
1~15
1~15
1~15
1~15
1.035~15
1.104~15
1.325~15
1.38~15
1.656~15
1.725~15
2.07~15
1.38~15
1.656~15
2.208~15
2.65~15
2.76~15
3.312~15
3.45~15
4.14~15
1.25~18.75
1.25~18.75
1.25~18.75
1.25~18.75
1.25~18.75
1.25~18.75
1.25~18.75
1.25~18.75
1.25~18.75
1.25~18.75
1.25~18.75
1.25~18.75
1.25~18.75
1.25~18.75
1.25~18.75
1.325~18.75
1.38~18.75
1.656~18.75
1.725~18.75
2.07~18.75
1.38~18.75
1.656~18.75
2.208~18.75
2.65~18.75
2.76~18.75
3.312~18.75
3.45~18.75
4.14~18.75
1.6~24
1.6~24
1.6~24
1.6~24
1.6~24
1.6~24
1.6~24
1.6~24
1.6~24
1.6~24
1.6~24
1.6~24
1.6~24
1.6~24
1.6~24
1.6~24
1.6~24
1.656~24
1.725~24
2.07~24
1.6~24
1.656~24
2.208~24
2.65~24
2.76~24
3.312~24
3.45~24
4.14~24
2~30
2~30
2~30
2~30
2~30
2~30
2~30
2~30
2~30
2~30
2~30
2~30
2~30
2~30
2~30
2~30
2~30
2~30
1.725~30
2.07~30
2~30
2~30
2.208~30
2.65~30
2.76~30
3.312~30
3.45~30
4.14~30
2~30
2~30
2~30
2~30
2~30
2~30
2~30
2~30
2~30
2~30
2~30
2~30
2~30
2~30
2~30
2~30
2~30
2~30
1.725~30
2.07~30
2~30
2~30
2.208~30
2.65~30
2.76~30
3.312~30
3.45~30
4.14~30
2.5~37.7
2.5~37.7
2.5~37.7
2.5~37.7
2.5~37.7
2.5~37.7
2.5~37.7
2.5~37.7
2.5~37.7
2.5~37.7
2.5~37.7
2.5~37.7
2.5~37.7
2.5~37.7
2.5~37.7
2.5~37.7
2.5~37.7
2.5~37.7
1.725~37.7
2.07~37.7
2.5~37.7
2.5~37.7
2.5~37.7
2.65~37.7
2.76~37.7
3.312~37.7
3.45~37.7
4.14~37.7
3.2~48
3.2~48
3.2~48
3.2~48
3.2~48
3.2~48
3.2~48
3.2~48
3.2~48
3.2~48
3.2~48
3.2~48
3.2~48
3.2~48
3.2~48
3.2~48
3.2~48
3.2~48
1.725~48
2.07~48
3.2~48
3.2~48
3.2~48
3.2~48
3.2~48
3.312~48
3.45~48
4.14~48
3.2~48
3.2~48
3.2~48
3.2~48
3.2~48
3.2~48
3.2~48
3.2~48
3.2~48
3.2~48
3.2~48
3.2~48
3.2~48
3.2~48
3.2~48
3.2~48
3.2~48
3.2~48
1.725~48
2.07~48
3.2~48
3.2~48
3.2~48
3.2~48
3.2~48
3.312~48
3.45~48
4.14~48
4~60
4~60
4~60
4~60
4~60
4~60
4~60
4~60
4~60
4~60
4~60
4~60
4~60
4~60
4~60
4~60
4~60
4~60
1.725~60
2.07~60
4~60
4~60
4~60
4~60
4~60
4~60
4~60
4.14~60
4~60
4~60
4~60
4~60
4~60
4~60
4~60
4~60
4~60
4~60
4~60
4~60
4~60
4~60
4~60
4~60
4~60
4~60
1.725~60
2.07~60
4~60
4~60
4~60
4~60
4~60
4~60
4~60
4.14~60
5~75
5~75
5~75
5~75
5~75
5~75
5~75
5~75
5~75
5~75
5~75
5~75
5~75
5~75
5~75
5~75
5~75
5~75
1.725~75
2.07~75
5~75
5~75
5~75
5~75
5~75
5~75
5~75
5~75
6.3~94.5
6.3~94.5
6.3~94.5
6.3~94.5
6.3~94.5
6.3~94.5
6.3~94.5
6.3~94.5
6.3~94.5
6.3~94.5
6.3~94.5
6.3~94.5
6.3~94.5
6.3~94.5
6.3~94.5
6.3~94.5
6.3~94.5
6.3~94.5
1.725~94.5
2.07~94.5
6.3~94.5
6.3~94.5
6.3~94.5
6.3~94.5
6.3~94.5
6.3~94.5
6.3~94.5
6.3~94.5
Circuit breaker
Rated
current (A)
Default setting ratings
of short time-delay 8In (kA)
Setting
range (kA)
Delayed tripping
time (s)
Returnable time
Frame size
rated current
Rated
current (A)
400 630 800 1000 1250 1600 2000 2000 2500
3200
3200
Instantaneous
setting ratings (kA)
0.16
0.19(motor)
0.2
0.24(motor)
0.25
0.30(motor)
0.32
0.38(motor)
0.40
0.48(motor)
0.50
0.60(motor)
0.63
0.75(motor)
0.80
0.96(motor)
1.0
1.20(motor)
1.25
1.5(motor)
1.0
1.2(motor)
1.6
1.92(motor)
2.0
2.4(motor)
2.5
3.0(motor)
16
20
25
32
40
50
63
80
100
125
100
160
200
250
NM8-125
NM8S-125
NM8-250
NM8S-250
4000
4000
5000
6300
NA1-2000 NA1-3200 NA1-4000
NA1-6300
3.2
0.4~6
5.04
0.63~9.45
6.4
0.8~12
8
1~15
10
16
16 20
25.6
25.6 32 32
1.25~18.75
2~30 2~30 2.5~37.7
3.2~48
3.2~48 4~60 4~60
40
50.4
5~75 6.3~94.5
Downstream
Upstream
13. Selectivity protection
0.1, 0.2, 0.3, 0.4 0.1, 0.2, 0.3, 0.4
0.06, 0.14, 0.23, 0.35
0.06, 0.14, 0.23, 0.35
Air Circuit Breaker