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| 用途 Application |
Ⅱ ZNCK智能测控单元适用于电压为6-10KV三相中性点不接地供电网系统中的矿用隔爆型高压真空配电装置BGP系列产品中。
Ⅱ ZNCK Intelligent test control unit is applicable to BGPseries products of mining used explosion proof type high-voltage vacuum distribution in three neutral point unearth power network system with voltage6-10KV. |
| 功能及保护技术参数 Function and protection technical parameter |
Ⅱ ZNCK 智能测控单元采用单片机控制，并以全中文液晶显示，成分发挥软件和硬件优势，保护功能齐全，性能稳定，其技术处于领先水平，该测控单元的主要保护功能及技术参数如下：
1.短路保护：短路保护整定电流值分挡连续可调，分别为额定电流的6-10的整数倍数，精度为±5%。保护动作 时间小于100ms;
2.过载保护：在1.2倍额定电流时启动，采用反时限特性动作；
3.接地保护：接地保护为选择性保护；接地电流整定值为接地保护动作的门栏值，分2A、3A、4A三挡；接地延时动作时间为0.5s、1S三
挡，误差小于±5%
4.绝缘监视保护：保护动作时间小于100ms
5.过压保护：当电网电压uac大于120％额定电压时，过压保护动作，动作时间小于100ms，精度为±5%
6.欠压保护：当电网电压小于65％额定电压时，欠压保护动作延时５s，精度为±5%
7.故障追忆功能：可记忆前99次发生跳闸故障，并包含相应动作数据
8.累计信息功能：有功电度量记忆范围0-99999999度，累计故障可记忆0-9999次。 |
| Ⅱ ZNCK Intelligent test control unit adopts singlechip control,and LCDdisplay in ChineseIt fully exert the advantage of software and hardware,and with complete protection function and stable performance,its technology is in the leading position.The main protection function and technical parameter of the test control unit as the following: |
1.Short-circuit protection:the rectify current value of the short-circuit protection is stepped and continuously adjustable,it is the 6-10
integer times of the rated current,the accuracy ±5%.The protection time smaller than 100ms;
2.Overload protection:Start at 1.2times of rated current,adopt inverse time lag characteristic action;
3.Grounding protection:The grounding protection is a selective protection;the grounding current rectified value as the threshold level
of the grounding action,has 2A,3A and 4A steps;grounding time lag action is 0,0.5S and 1S steps,error smaller than ±5%;
4.Insulating montor protection: Protection action time smaller than 100ms;
5.Over-voltage protection:When the voltage of the power net uac larger than 120% of the rated voltage,over-voltage protection action,
action time smaller than100ms,the accuracy ±5%;
6.Under-voltage protection:When the voltage of the power net smaller than 65% of the rated voltage,under-voltage protection action
time delay 5S the accuracy is ±5%;
7.Faults remember function:Can remember the front 99 times of trip fault and contain relative action data:
8.Information accumulating function:Remember rage of wattful electrical degree charge 0-99999999 times,can remember
accumulating fault 0-9999 times | |
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