文件编号
Doc. No.
NDT2920257
版次
Edition
第
2
版
Version 2
实施日期
Implementation date
2019-08-19
7
Isd/I
)
2
×Tsd
;
当故障电流
Ii
>
I
≥
1.5×Isd
时,反时限保护转为定时限保护,即
tsd=Tsd
。
When fault current is Ii
>
I
≥
1.5× Isd , inverse time-delay convert to definite time-delay protection,
tsd=Tsd.
3.2.2.6
短路瞬时保护
Short-circuit instantaneous protection.
a
)短路瞬动保护整定电流
Ii
,容许偏差±
15%;
a) Setting current of short-circuit instantaneous Ii
,
Allowable deviation is±15%;
b
)短路瞬动保护动作时间
Ti
<
50ms
。
b) Action time Ti of Short-circuit instantaneous protection is
<
50ms.
3.2.2.7
热记忆保护保护
Thermal memory protection
热记忆保护功能维持时间
Tthm=1200s
。
Thermal memory protection hold time Tthm is 1200s.
4.
工作环境
Working Environment
4.1
存放的环境条件见下表
3
:
Storage condition is shown as follow Table 3:
表
3
存放环境条件表
Table 3 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
Service environment
(
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;
(1) Do not install the breaker in explosive environment, or hazard of explosion will be resulted
;
(
2
)请勿安装于特别潮湿的地方;
(2) Do not install the breaker in extremely humid locations
;
(
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;
(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
)不要安装在振动大于
10m/s
2
的地方;
(4) Do not install the breaker in places with vibration more than 10m/s
2
;
(
5
)不要安装在气体介质能腐蚀金属和破坏绝缘的地方。
(5) Do not install the breaker in places with gaseous medium corrosive to metal and aggressive
2019.12.31
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