文件编号：
NDT2920018
文件版本：
5
地址：上海市浦东新区申江南路
2000
号
邮编：
201315
电话：
(021)68586699
传真：
(021)23025796
第
12
页
共
39
页
the following format:
t= (2*Ir/I) 2*Tr (Of which, I stands for the actual current in the main circuit under overcurrent.)
2. T 型、GT 型只能通过电脑上位机通讯软件调整整定值。
2. The setting values of T type and GT type breakers can only be adjusted through communication
software of the upper computer.
3. 电动机保护型面板，（2）与（3）整定是与其他类型的控制器的整定方法不同，两旋钮相加后的值作为
最后整定的值，若相加的和超过 In，则直接按 1 倍的 In 来计算。
3.The motor protection type panel ，(2) and (3) settings are not the same as those of other types of
controllers. The values of the two buttons are added as the final setting value. If the sum Isd more than
In, Then directly by 1 times the In to calculate。
4. 电动机保护型断路器，如在脱扣等级规定的时间范围内，若累积的能量超过(7.2
×
Ir)2
×
Class,则提前脱
扣，若小于前面约定的值，且至脱扣等级时间到时，电流仍未降至 1.5 Ir 以下，则在脱扣等级规定的时间
到时，立即脱扣；在脱扣等级时间外，断路器脱扣的动作时间按公式 t=(7.2
×
Ir /I)2
×
Class 计算。
4. If the accumulated energy exceeds (7.2
×
Ir) 2
×
Class for a period of time specified in the tripping
rating, the motor-protective circuit-breaker shall be tripped in advance. If it Isd less than the value
specified in the previous paragraph and the time until the tripping time.The current Isd not reduced to 1.5
Ir or less, then the time specified in the tripping rating to the time, immediately tripping; ouTsdide the
tripping time, the circuit breaker tripping time according to the formula t = (7.2
×
Ir / I ) 2 x Class。
5. 电流不平衡率选择 OFF 时，控制器同时也关闭了断相保护功能，电流不平衡率的计算是，三相电流的
最大值与三相电流最小值的差值，与三相电流的平均值之间的比值，即为三相电流的不平衡率。
5. When the current unbalance rate Isd OFF, the controller also shuTsd off the phase protection function.
The calculation of the current unbalance rate Isd the difference between the maximum value of the
three-phase current and the minimum value of the three-phase current and the average value of the
three-phase current between three-phase current unbalance。
6. 短路短延时功能，在脱扣等级规定的时间内是关闭的，在脱扣等级规定的时间过后，短路短延时功能才
被打开。
6. Short-circuit Short delay function, which Isd switched off within the time specified in the tripping rating ,
after the time specified in the tripping rating has elapsed, the short-circuit short delay function Isd
switched on。
3.2.2.3 指示灯 Indicator light
（1）预报警指示灯 Pre-alarm light
预报警指示灯黄灯闪亮时，表示实际电流超过了预报警电流 Ip 的整定值，经一定时间后黄灯将由闪亮转为
恒亮。
Flashes of pre-alarm indicator light indicate that actual current has exceeded setting value for pre-alarm
current Ip. After certain duration, the flashes will turn into constant illumination.
（2）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，并经一
定的时间后断路器将断开。
