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
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