文件编号:
NDT2920019
文件版本:
4
地址:上海市浦东新区申江南路
2000
号
邮编:
201315
电话:
(021)68586699
传真:
(021)23025796
第
10
页
共
18
页
Derating
Coefficient
4
630
温度
Temperature
40℃
45℃
50℃
55℃
60℃
65℃
70℃
降容系数
Derating
Coefficient
1
0.979
0.958
0.937
0.915
0.893
0.871
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.
表 5/ table5
塑壳断路器高海拔降容系数表
Molded Case Circuit Breaker Derating Coefficient Table in High altitude Place
海拔高度
H
Altitude (km)
额定工作电流
Rated
working current
最大工作电压
Ultimate
working voltage
额定工频耐压
Rated
working frequency
withstand voltage
2
In
Ue
1.00
3
0.97In
0.83Ue
0.89
4
0.93In
0.71Ue
0.80
5
0.89In
0.63Ue
0.73
表 6/ table6
接线端子/安装螺钉拧紧扭力矩 Torsion value for wiring terminal
序号
No.
壳架等级额定电流
(A)
Frame size rated current
螺纹直径
(mm)
Thread diameter
扭力矩
(N.m)
Torsion value
1
125
、
250
M8
8
2
400
M10
20
3
630
M12
28