CN2313288Y - 微型断路器的触头系统 - Google Patents

微型断路器的触头系统 Download PDF

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Publication number
CN2313288Y
CN2313288Y CN 97230750 CN97230750U CN2313288Y CN 2313288 Y CN2313288 Y CN 2313288Y CN 97230750 CN97230750 CN 97230750 CN 97230750 U CN97230750 U CN 97230750U CN 2313288 Y CN2313288 Y CN 2313288Y
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China
Prior art keywords
contact terminal
circuit breaker
arc
movable contact
miniature circuit
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Expired - Fee Related
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CN 97230750
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黎伟成
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FOSHAN SWITCHES FACTORY
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FOSHAN SWITCHES FACTORY
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Abstract

一种微型断路器的触头系统,包括磁轭、动触头、静触头、引弧板、灭弧室,在磁轭上连接一只金属弧角,该弧角在电气上与动触头相连。本触头系统的改进,使电弧道由原来的静触头弧道增加为动,静触头双弧道,提高微型断路器的短路分断能力,减少动触头的电磨损。

Description

微型断路器的触头系统
本实用新型涉及一种微型断路器,特别是微型断路器的触头系统。
常见的微型断路器,由于体积小,结构紧凑,使触头开距超程较小。断路器分断电流后,电弧弧极停留在动触头上(如图1所示),停滞时间较长,直到进入灭弧室熄灭为止。电弧对动触头烧蚀严重,降低了断路器的极限短路分断能力。现有产品大多数不满足6KA的极限短路分断能力和1.5KA的短路运行分断能力。
本实用新型的目的是对微型断路器的触头系统进行改进,以提高微型断路器的短路分断能力,减少动触头的电磨损。
图1是现有微型断路器的触头系统示意图;
图2是本实用新型的触头系统示意图。
本实用新型是通过如下方式实现的:参照图2,本微型断路器的触头系统包括磁轭1、动触头2、静触头3、引弧板4、灭弧室5,在磁轭1上连接一只金属弧角6。此连接可以是直接连接,如焊接、铆接等,也可以通过导体连接,如通过导线连接。金属弧角6在电气上与动触头2相连。这样,断路器在分断短路电流时,电弧道由原来的静触头弧道增加为动、静触头双弧道,电弧根部从动触头2上迅速转移到弧角6上,沿动触头弧道进入灭弧室,从而减少了电弧对动触头的磨损,使电弧尽快熄灭,缩短了电弧燃烧时间,降低了实际分断电流,提高分断能力。
本实用新型的优点在于:1.有效减少动触头的电磨损,提高了微型断路器的短路分断能力。全系列微型断路器极限短路分断能力达到6KA,达到了IEC898标准的技术要求。2.结构简单,成本低廉、容易实施。

Claims (3)

1、一种微型断路器的触头系统,包括磁轭(1)、动触头(2)、静触头(3)、引弧板(4)、灭弧室(5),其特征在于在磁轭(1)上连接一只金属弧角(6),该弧角(6)在电气上与动触头(2)相连。
2、根据权利要求1所述的断路器的触头系统,其特征是金属弧角(6)与磁轭(1)直接连接。
3、根据权利要求1所述的断路器的触头系统,其特征是金属弧角(6)与磁轭(1)通过导体连接。
CN 97230750 1997-12-30 1997-12-30 微型断路器的触头系统 Expired - Fee Related CN2313288Y (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 97230750 CN2313288Y (zh) 1997-12-30 1997-12-30 微型断路器的触头系统

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 97230750 CN2313288Y (zh) 1997-12-30 1997-12-30 微型断路器的触头系统

Publications (1)

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CN2313288Y true CN2313288Y (zh) 1999-04-07

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CN 97230750 Expired - Fee Related CN2313288Y (zh) 1997-12-30 1997-12-30 微型断路器的触头系统

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CN (1) CN2313288Y (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102610455A (zh) * 2012-04-01 2012-07-25 天津市鸿远电气设备有限公司 低压断路器灭弧机构
CN106997833A (zh) * 2017-05-22 2017-08-01 国网上海市电力公司 一种框架断路器的触头系统

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102610455A (zh) * 2012-04-01 2012-07-25 天津市鸿远电气设备有限公司 低压断路器灭弧机构
CN106997833A (zh) * 2017-05-22 2017-08-01 国网上海市电力公司 一种框架断路器的触头系统

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