文件编号
Doc. No.
NDT2920257
版次
Edition
第
2
版
Version 2
实施日期
Implementation date
2019-08-19
6
并经一定的时间后断路器将断开。
过载指示灯快速闪烁时
(
频率
4Hz)
，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 Ir. The breaker will break the circuit after certain duration.
When the overload indicator flashes fast
（
frequency is 4Hz
），
it indicates that the 3 trip has not
caused the product tripped.
（
2
）电源指示灯
Power light
电源指示灯慢速闪烁时
(
频率
1Hz)
，表示正常运行；
电源指示灯快速闪烁时
(
频率
4Hz)
，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(frequency is 1Hz)
，
it indicates that the system is
running normally
；
When the overload indicator flashes fast (frequency is 4Hz)
，
it indicates that self-checking of
the controller or failure detected during the system operation.
注：两种指示灯应在每半年进行一次常规检验。
Note: Two indicator lights should have once routine inspection per half a year.
3.2.2.4
过载长延时保护
Protection of overload long-delay
a
）过载长延时整定电流
Ir
，容许偏差±
3%;
a) Setting current Ir of overload long-delay, Allowable deviation is ±3%;
b
）过载长延时整定时间
Tr
，动作时间精度为±
10%;
b) Setting time Tr of overload long-delay
，
Accuracy of action time is±10%;
c
）当实际电流
I
超过
1.15
倍的过载长延时整定电流值
Ir
时，视为过载状态。过载保护按反时限特
性进行，延时动作时间
tr=
（
2×Ir/I
）
2
×Tr
。
c) When actual current
’
s value is more than 1.15 times overload long delay setting current Ir,
see as overload status. Overload protection is carried out according to inverse time-delay
characteristics, delay action time tr=
（
2×Ir/I
）
2
×Tr.
3.2.2.5
短路短延时保护
Short-circuit short-delay protection.
a
）短路短延时整定电流
Isd
，容许偏差±
3%
。设置为
off
时，控制器短路短延时保护功能关闭。
a) Setting current Is of short-circuit short-delay, Allowable deviation is ±3%.
b
）短路短延时保护动作时间值
Tsd
，动作时间精度为理论值±
10%
（注意：
0.1s
和
0.2s
这两个档
位，固有绝对误差
±
40ms
）。
b) Action time value of short-circuit short-delay protection, accuracy of action time is ±
10%(Notes: Inherent absolute deviation is
±
40ms for 0.1s and 0.2s these two gears).
c
）短路短延时保护分为定时限保护和反时限保护两种方案。
c) Short-circuit short-delay protection include two schemes of definite time-delay and inverse
time-delay protection.
当故障电流
1.5×Isd
＞
I
≥
Isd
时，具有反时限保护特性，即
tsd=
（
1.5×Isd/I
）
2
×Tsd
；
When fault current is 1.5×Isd
＞
I
≥
Isd, triggered by inversed time-delay characteristics
，即
tsd=
（
1.5×
2019.12.31
文件控制
