| 应用在1140 V电路中的DW45万能式断路器改型 |
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| 引用本文： | 王国忠,张正,王栋霖. 应用在1140 V电路中的DW45万能式断路器改型[J]. 低压电器, 2013, 0(20): 56-58 |
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| 作者姓名： | 王国忠 张正 王栋霖 |
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| 作者单位： | 浙江方圆电气设备检测有限公司,浙江嘉兴314001 |
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| 摘 要： | DW45万能式断路器（ACB）通过触头结构改进,将原多组并联触头分为两组后绝缘隔离再串联,形成双断点结构,从而将DW45 ACB最高额定工作电压由AC690 V提高到1 140V,改型后DW45 ACB在AC 1 140 V极限短路分断能力技术指标达到35 kA.
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| 关 键 词： | 万能式断路器 双断点触头结构 极限短路分断能力 |
Improvement of DW45 Air Circuit Breaker Applied in the Circuit of 1 140 V |
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| Affiliation: | WNAG Guozhortg, ZHANG Zheug, WANG Dongliu (Zhejiang Fangyuan Electrical Equipment Testing Co. ,Ltd. , Jiaxing 314001, China) |
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| Abstract: | By improvement of the contact structure of DW45 air circuit breaker （ ACB ） , the original several groups of parallel contacts were divided into two groups. The two groups were insulated and then connected in series so as to form a double-break-contact structure, thus the maximum rated operating voltage of DW45 ACB was increased from AC 690 V to AC 1 140 V. The technical data of ultimate short circuit breaking capacity of the improved DW45 ACB can reach 35 kA/AC l 140 V. |
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| Keywords: | air circuit breaker （ACB） double-break-contact structure ultimate short circuit breaking capacity |
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