The utility model belongs to a control system for preventing misclosing after plastic case failure in the drawer of low voltage switchgear. The positive pole of the 220V control power supply is connected with fuse protection insurance FU in series. The circuit of the 220V control power supply is connected with a normal open contact, which is a fault auxiliary contact, and is connected with a control coil of the intermediate relay KA. The circuit forms a plastic case fault signal expansion part. The circuit outside the fault signal expansion part is connected in parallel with the normal closed contacts of the intermediate relay, and the normal closed contacts are connected with the losing voltage coil MN, which forms the interlocking tripping part of the fault signal; the normal open contacts of the intermediate relay KA are also connected in parallel with the circuits outside the plastic case fault signal expansion part and the interlocking tripping part of the fault signal, and the normal open contacts are connected with the acousto-optic alarm, which forms the circuit. Acousto-optic alarm part. The utility model not only reminds the occurrence of faults, but also prevents the plastic case from misclosing, and ensures the danger of misoperation.
【技术实现步骤摘要】
低压开关柜之抽屉内防止塑壳故障后误合闸控制系统
本技术涉及电器安全控制系统,具体是低压开关柜之抽屉内防止塑壳故障后误合闸控制系统。
技术介绍
随着《中国制造2025》的提出,输配电行业对数据中心智能低压开关柜的安全性就有了更高的要求。市场上现有的数据中心智能低压开关柜的缺点有:在塑壳发生故障跳闸后,现场的工作人员却容易失误没注意,然后在故障还没有解除的情况下就操作塑壳合闸,并造成危险的发生。比如据配电房现场工作人员反映,常常发生当塑壳故障跳闸后,现场的工作人员却容易失误没注意,然后在故障还没有解除的情况下就操作塑壳合闸,并造成危险的发生。而已有的解决方案是提高现场工作人员的工作能力,仔细检查塑壳是否为故障跳闸,但是还是会有失误的发生。申请号为:2018102207349公开了一种防误闭锁电路,该专利技术中的闭锁信号生出模块在检测出电源失压、系统复位和程序非正常运行的系统故障时,闭锁模块控制执行器件驱动模块停止工作,从而实现自动闭锁执行器件,防止断路器误分闸或误合闸,提高自动配电系统的可靠性和稳定性。该专利利用模块化执行程序非正常运行,虽然效果好,但是成本较高。20 ...
【技术保护点】
1.低压开关柜之抽屉内防止塑壳故障后误合闸控制系统,包括在控制回路中连接有220V控制电源,220V控制电源中正极串接有熔断保护的保险FU,其特征在于:在所述220V控制电源的回路中连接有常开触点,常开触点为故障辅助触点,并连接有中间继电器KA的控制线圈,该回路形成塑壳故障信号扩展部分。
【技术特征摘要】
1.低压开关柜之抽屉内防止塑壳故障后误合闸控制系统,包括在控制回路中连接有220V控制电源,220V控制电源中正极串接有熔断保护的保险FU,其特征在于:在所述220V控制电源的回路中连接有常开触点,常开触点为故障辅助触点,并连接有中间继电器KA的控制线圈,该回路形成塑壳故障信号扩展部分。2.根据权利要求1所述的低压开关柜之抽屉内防止塑壳故障后误合闸控制系统,...
【专利技术属性】
技术研发人员:同晓锋,张兴,董广林,梁新剑,
申请(专利权)人:京能十堰热电有限公司,
类型:新型
国别省市:湖北,42
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