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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值
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
I:working current Isd: Short circuit short-time delay setting current
4)短路瞬时保护(见表 7)Short 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.
表 7 Table 7
脱扣特性
Tripping
Characteristics
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:
表 8 存放环境条件表
Table 8 Storage condition
(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
;