4
630
注:当使用环境温度低于 40℃时,产品可正常使用,不存在降容。
15)高海拔降容系数
1:海拔高度低于 2km,不需要考虑降容;
2:海拔高度高于 2km,降容系数将下表:
Note: When ambient temperature is less than 40℃, breaker can be used normally, without any
derating.
15)Derating coefficient in high altitude place
1:When breaker was used in place less than 2km, derating is needless.
2:When breaker was used in place higher than 2km, derating is necessary.
Molded Case Circuit Breaker Derating Coefficient Table in High altitude Place
海拔高度 H
Altitude (km)
2
3
4
5
接线端子/安装螺钉拧紧扭力矩 Torsion value for wiring terminal
序号
No.
1
2
3
地址:上海市浦东新区申江南路 2000 号
文件编号:NDT2920019
Derating
Coefficient
温度
40℃
Temperature
降容系数
1
Derating
Coefficient
表 5/ table5
塑壳断路器高海拔降容系数表
额定工作电流 Rated
working current
In
0.97In
0.93In
0.89In
表 6/ table6
壳架等级额定电流(A)
Frame size rated current
125、250
400
630
邮编:201315
第 10 页 共 18 页
45℃
50℃
55℃
0.979
0.958
0.937
最大工作电压
额定工频耐压 Rated
Ultimate
working frequency
working voltage
withstand voltage
Ue
0.83Ue
0.71Ue
0.63Ue
螺纹直径(mm)
扭力矩(N.m)
Thread diameter
Torsion value
M8
8
M10
20
M12
28
电话:(021)68586699
文件版本:4
60℃
65℃
0.915
0.893
1.00
0.89
0.80
0.73
传真:(021)23025796
70℃
0.871
Need help?
Do you have a question about the NDM3L Series and is the answer not in the manual?