文件编号
Doc. No.
NDT2920257
版次
Edition
第
2
版
Version 2
实施日期
Implementation date
2019-08-19
5
（
5
）短路短延时整定时间
Tsd; Setting time of short-circuit short-delay Tsd;
（
6
）短路瞬时整定电流
Ii
;
Setting current of short-circuit instantaneous Ii;
（
7
）电源指示灯
Power; Power light;
（
8
）过载指示灯
Over. Overload light.
控制器控制面板见下图
1
：
Control panel of controller is shown as follow Fig. 1:
图
1
控制器控制面板
Fig. 1 Control panel of controller
3.2.2 NDM3
EU
控制器控制面板各部分功能
Functions of each part in control panel of NDM3
EU
controller
3.2.2.1
测试端口
Test port
“TEST
”端口，
NDM3
EU
专用测试仪通过该端口与控制器相连，进行测试及调试等操作。
Through this “ TEST” terminal, special tester for NDM3
EU
is connected to the controller to
conduct testing and debugging etc.
3.2.2.2
整定电流、整定时间调节旋钮
Adjusting knob for setting current
、
setting time and tripping
rating
可通过电流、时间的调节，选择适当的组合以达到保护线路、保护设备的作用
,
此项操作应由专
业技术人员负责。
Suitable combinations of current and time are adjusted by this knob, so as to protect circuits and
devices. This operation should be done by specialized technical personnel.
注：
1.Tr
表示当实际电流为
Ir
整定值的
2
倍时，断路器动作时间。
如：当
Ir
整定为
400A
、
Tr
整定为
100s
时，当主回路电流为
2×400A
时，断路器将持续
100s
时后断
开主回路。动作时间精度为±
10%
。在过载电流下，断路器断开主回路的时间遵循以下公式：
t=(2×Ir/I)
2
×Tr
（其中
I
表示过载情况下，主回路实际电流值）
Notes: 1.Tr indicates the operating time of the breaker when actual current is twice of Ir setting.
E.g.: when Ir and T
r
are set as 400A and 100s respectively, when the current in main circuit reaches
2× 400A, the breaker will disconnect the main circuit after lasting for 100s. The time precision of
action is ±10%. Under the overcurrent, the time that the breaker disconnects the main circuit shall
follow the following format: t=(2×Ir/I)
2
×Tr(Of which, I stands for the actual current in the main circuit
under overcurrent.)
3.2.2.3
指示灯
Indicator light
（
1
）过载指示灯
Overload light
过载指示红灯恒亮时，表示实际电流超过了过载长延时整定电流值
Ir
的
1.15
倍，处于过载状态，
2019.12.31
文件控制
