nader NDM3EU-225 Operating Instructions Manual page 6

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如：当 I 整定为 225A、T r 整定为 100s 时，当主回路电流为 2×225A 时，断路器将持续 100s 时后断
R
开主回路。动作时间精度为±10%。在过载电流下，断路器断开主回路的时间遵循以下公式：
t=(2×I /I) ×T （其中 I 表示过载情况下，主回路实际电流值）
2
r r
Notes: 1.T r indicates the operating time of the breaker when actual current is twice of I
E.g.: when I r and T are set as 225A and 100s respectively, when the current in main circuit reaches
R
2× 225A, the breaker will disconnect the main circuit after lasting for 100s. The time precision of
action is ±10%. Under the overcurrent, the time that the breaker disconnects the main circuit shall
follow the following format: t=(2×I
under overcurrent.)
3.2.2.3 指示灯 Indicator light
（1）过载指示灯 Overload light
过载指示红灯恒亮时，表示实际电流超过了过载长延时整定电流值 I
并经一定的时间后断路器将断开。
过载指示灯快速闪烁时，表示在 3 次脱扣动作仍未导致产品脱扣
Constant light of overload indicator indicates that actual current is more than 1.5 times of
overload long-time delay current setting I
When the overload indicator flashes fast，it indicates that the 3 trip has not caused the product
tripping
（2）电源指示灯 Power light
电源指示灯慢速闪烁时，表示正常运行
电源指示灯快速闪烁时，代表控制器自检或系统运行过程中检测到故障
When the overload indicator flashes slow，it indicates that the system is running normally
When the overload indicator flashes fast， it indicates that self checking of the controller or
failture detected during the system operation
注：两种指示灯应在每半年进行一次常规检验
工作环境 Standard Working Condition
4.
4.1 存放的环境条件见表 Storage condition ( see the table)
NDT2920214
Edition
2019.12.26
文件控制
/I) ×T (Of which, I stands for the actual current in the main circuit
2
r
r
. The breaker will break the circuit after certain duration.
R
表 6：存放环境条件表
Table 6: Table of storage condition
项目
Item
周围温度
Ambient temperature
相对湿度
第 2 版
版次
Version2
6
实施日期
Implementation date
setting.
R
的 1.15 倍，处于过载状态，
R
规范
Specifications
-35℃ ～ +70℃
（环境温度 25℃时）≤95%
20190417