nader NDM2L Series Product Manual page 9

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10) 在没有雨雪侵袭的地方 Be mounted free from rain and snow.。
11) 当用户使用条件较上述严酷时应与制造商协商 Should consult with the manufacturer when
the working conditions are harsher.
12)储存环境 Storage environment
周围温度 Ambient temperature
13)产品降容系数表 Product derating coefficient table 见表 4/table4
序号
壳架等级额定电流
No.
Frame size rated current
1
125
2
250
3
400
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。
Note: When ambient temperature is less than 40℃, breaker can be used normally, without any derating.
14)高海拔降容系数 Derating coefficient in high altitude place
1:海拔高度低于 2km,不需要考虑降容;When breaker was used in place less than 2km, derating
is needless.
2:海拔高度高于 2km,降容系数将下表:When breaker was used in place higher than 2km, derating
is necessary.
地址:上海市浦东新区申江南路 2000 号
文件编号:NDT2920129
见表
项目 Item
相对湿度 Relative humidity
表 4 塑壳式断路器降容系数表
table4 Molded Case Circuit Breaker Derating Coefficient Table
温度 Temperature
降容系数 Derating Coefficient
温度 Temperature
降容系数 Derating Coefficient
温度 Temperature
降容系数 Derating Coefficient
温度 Temperature
降容系数 Derating Coefficient
3/table3
表 3/ table3
规 范 Description
-40℃ ~ +75℃
(Ambient temperature at 25℃)≤95%
温度对应产品降容系数表 Derating coefficient table
40℃
45℃
1
0.977
40℃
45℃
1
0.982
40℃
45℃
1
0.981
40℃
45℃
1
0.979
邮编:201315
电话:(021)68586699
第 9 页 共 20 页
文件版本:2
50℃
55℃
60℃
0.954
0.931
0.907
50℃
55℃
60℃
0.963
0.944
0.924
50℃
55℃
60℃
0.962
0.942
0.922
50℃
55℃
60℃
0.958
0.937
0.915
见表
5/table5
传真:(021)23025796
65℃
70℃
0.883
0.858
65℃
70℃
0.904
0.882
65℃
70℃
0.901
0.879
65℃
70℃
0.893
0.871

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