ABB DSQC626A 机器人系统控制卡件

ABB DSQC626A 机器人系统控制卡件

ABB DSQC626A 机器人系统控制卡件

(1)作用:ABB DSQC626A 主要用于当发生人身触电或漏电时，能迅速切断电源，保障人身安全，防止触电事故。有的漏电保护器还兼有过载、短路保护，用于不频繁起、停电动机。

(2)工作原理:ABB DSQC626A 当正常工作时，不论三相负载是否平衡，通过零序电流互感器主电路的三相电流相量之和等于零，故其二次绕组中无感应电动势产生，漏电保护器工作于闭合状态。如果发生漏电或触电事故，三相电流之和便不再等于零，而等于某一电流值ls。ls会通过人体、大地、变压器中性点形成回路，这样零序电流互感器二次侧产生与Is对应的感应电动势，加到脱扣器上，当Is达到一定值时，脱扣器动作，推动主开关的锁扣，分断主电路。

(3）ABB DSQC626A 参数与类型

参数:额定电流,额定漏电动作电流，额定漏电动作时间。

类型。按动作方式可分为电压动作型和电流动作型﹔按动作机构分，有开关式和继电器式:按极数和线数分，有单极二线、二极、二极三线等。

ABB DSQC626A 机器人系统控制卡件

(1) Function :ABB DSQC626A is mainly used to quickly cut off the power supply when personal electric shock or leakage occurs, to ensure personal safety and prevent electric shock accidents. Some leakage protectors also have overload and short circuit protection, which are used for infrequent starting and power failure motors.

(2) Working principle: When ABB DSQC626A works normally, regardless of whether the three-phase load is balanced, the sum of the three-phase current phasors through the main circuit of the zero-sequence current transformer is equal to zero, so no induced electromotive force is generated in the secondary winding, and the leakage protector works in the closed state. If a leakage or electric shock occurs, the sum of the three phases of the current is no longer equal to zero, but equal to a certain current value ls. ls will form a loop through the human body, the earth and the neutral point of the transformer, so that the induced electromotive force corresponding to Is will be generated on the secondary side of the zero-sequence current transformer and added to the trip device. When Is reaches a certain value, the trip device will act to push the lock of the main switch and break the main circuit.

(3) ABB DSQC626A parameters and types

Parameters: Rated current, rated leakage action current, rated leakage action time.

Type. According to the action mode can be divided into voltage action type and current action type; According to the action mechanism, there are switching type and relay type: according to the number of poles and lines, there are unipolar two wire, two pole, two pole three wire and so on.