Doc. Title Doc. No. 新 VD4 断路器分合闸脱扣器技术介绍1YH8 122 109 F Rev AIssued By Product Type Doc. Status Revision Page Company Department New VD4 Draft Released A 1 of 8 ABB Xiamen Switchgear Co., Ltd. TD [ ] [X] Author 1st Approved By 2nd Approved By Distribution Huang Ming Bernard Su Bernard Su External _________________________________________________________________________________________________________________________ We reserve all rights in this document and in the information contained therein. Reproduction, use or disclosure to third parties without express authority is strictly forbidden. 一、脱扣器原理简介新 VD4 断路器所配的脱扣器为创新的安全型双线圈设计脱扣器，分合闸脱扣器完全相同。分合闸脱扣器皆可承受被长期通电而不会烧毁。分合闸脱扣器安装在脱扣器功能模块中，整个模块可以进行简单快速的更换，并同时保持断路器参数的稳定性。以合闸脱扣器为例，新脱扣线圈的工作原理如下图所示：图 1 控制模块原理示意图每个脱扣器包含有一个动作线圈（5-3 端子间）和一个保持线圈（3-4 端子间），并集成了一整套控制保护电路。动作线圈的额定功率为200W，保持线圈的额定功率仅为 5W。1.在无合闸命令状态下，受IC 控制的电子开关M1 和 M2 皆处于关断状态，动作线圈和保持线圈都不被导通。2.如果脱扣器接受到的合闸命令小于设定的门槛电压，也就是低于60％的额定二次工作电压时， IC 控制的电子开关M1 和 M2 仍然不被导通，动作线圈和保持线圈中没有任何电流通过，脱扣器不动作。Doc. Title Doc. No. 新 VD4 断路器分合闸脱扣器技术介绍1YH8 122 109 F Rev AIssued By Product Type Doc. Status Revision Page Company Department New VD4Draft Released A 2 of 8 ABB Xiamen Switchgear Co., Ltd. TD [ ] [X] _________________________________________________________________________________________________________________________ We reserve all rights in this document and in the information contained therein. Reproduction, use or disclosure to third parties without express authority ...
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