EasyManua.ls Logo

nader NDM3EU-225 - Page 9

Default Icon
17 pages
Print Icon
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Loading...
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
9 17
1.5IsIIi
精度 accuracy%
±10
注:反时限时动作曲线符合 ts=1.5Isd
2
×Tsd/I
2
,定时限动作时间跟踪 Tsd 整定值。
ts:短路短延时动作时间 Tsd:短路短延时动作时间整定
I:实际运行电流 Isd:短路短延时动作电流整定值
Note: Inverse time curve is satisfied ts=1.5Isd
2
×Tsd/I
2
Fixed time action follows Tsd setting value.
ts: Short circuit short-time delay Tsd: Short circuit short-time delay setting time
Iworking current Isd: Short circuit short-time delay setting current
4)短路瞬时保护(见表 7Short circuit instantaneous protection(Table 7)
瞬时保护功能防止配电系统的金属性固体短路,此类故障短路电流比较大,需要快速断开。
Short circuit short-time delay protection is used to prevent short cirtuit of power distribution system.The
current of shrt circuit is high, which is needed quick break.
7 Table 7
脱扣特性
Tripping
Characteristics
Ii(×In)
见表 3 See table 3
脱扣时间Tripping time
0.85Ii
不脱扣 Non-tripping
1.15Ii
50ms
4.工作环境 Working Environment
4.1 存放的环境条件见下表 8
Storage condition is shown as follow Table 8:
8 存放环境条件表
Table 8 Storage condition
项目
Item
规范
Specifications
周围温度
Ambient temperature
-40 +75
相对湿度
Relative humidity
(环境温度 25℃时)≤95%
(when ambient temperature is
25)95%
4.2 使用环境 Environment for application
1)不要安装于含有爆炸气体的环境里,否则有引发爆炸的危险;
2)请勿安装于特别潮湿的地方;
3)不要安装在外磁场大于地磁场 5 倍的地方,否则断路器不能正常工作;
4)不要安装在振动大于 10m/s
2
的地方;
5)不要安装在气体介质能腐蚀金属和破坏绝缘的地方。
6)温度降容
(1) Do not install the breaker in explosive environment, or hazard of explosion will be resulted
(2) Do not install the breaker in extremely humid locations
(3) Do not install the breaker in places where external magnetic field is more than 5 times of the
geomagnetic field, or the breaker cannot work normally
(4) Do not install the breaker in places with vibration more than 10m/s
2