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文件编号:NDT2920257
文件版本:3
地址:上海市浦东新区申江南路 2000 邮编:201315 电话:(021)68586699 传真:(021)23025796
7 17
When the overload indicator is always on, it means that the actual current exceeds 1.15 times of the overload
long delay setting current value Ir, which is in an overload state, and the circuit breaker will be disconnected after
a certain time.
3.3 控制器参数整定(见表 3Setting Parameters of Controller (Table 3)
3 Table 3
壳架等级
Frame size
极数
Pole
Ir(A)
Trs
Isd(×Ir
Tsds
Ii(×In
225
3
100,110,125,
150,175,
200,225
12,60,80,100
2,3,4,5,6,7,8,9,
10,OFF
0.1,0.2,0.30.4
3,4,5,6,7,8,9,
10,11,12
400
3
250,300,350,
400
12,60,100,150
2,3,4,5,6,7,8,9,
10,OFF
0.1,0.2,0.3,0.4
3,4,5,6,7,8,9,
10,12,14
3.3.1 基本功能表(见表 4Basic fuction (Table 4)
4 Table 4
保护功能 Protection fuction
其它功能 Other
种类
Type
过载长延时保护
Overload long-time delay protection
热记忆功能
thermal memory function
短路短延时反时限保护
Short circuit short-time delay inverse time protection
短路短延时定时限保护
Short circuit short-time delay setting time protection
短路瞬时保护
Short circuit instantaneous protection
3.3.2 控制器整定值
1)过载长延时保护 (见表 5Overload long-time delay protection (Table 5)
过载长延时保护基于电流的真有效值(RMS,用来对过负荷进行保护。
Overload long-time delay protection is basic on the RMS of current, which is used to protect the load.
5 Table 5
NDM3EU-225
IrA
见表 3 See table 3
Tripping
Characteri
stics
Trs
12
60
80
100
1.05Ir
2h 不脱扣 Non-tripping
1.30Ir
1h 脱扣 tripping
1.5Ir,trs
21.3
106.7
142.2
177.8
2.0Ir,trs
12
60
80
100
7.2Ir,trs
0.93
4.63
6.17
7.72
精度
Accuracy
±10