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DCH重合闸继电器

2013/12/18 14:52:38点击:
用途:DCH-1型一次重合闸继电器是用于输电线路上实现三相一次重合闸的接线中,作为它的主要组成部分。
结构:装置由于一台时间继电器DS-32C作为时间元件,一台中间继电器作为中间元件,及一些电阻、电容元件组成,它们被固定在绝缘的安装板上,安装板又被固定在金属的底座上。装置具有金属的外壳,它通过螺杆被紧固在底座上。装置具有塑料盖子,从外面可以观察装置动作情况。时间元件:DS-32C型时间继电器,它的延时调整范围为0.25~5S。它被用来调整从装置启动到发出接通断路器合闸线圈电路的脉冲为止的延时。时间元件有两对延时动合触和两对瞬时转换触点。中间元件DZK-226型中间继电器,它是装置的出口元件,用于发出接通断路器合闸线圈电路的脉冲。继电器的线圈由二只绕组组成,电压绕组ZJ用于中间元件的启动;电流绕组ZJ用于中间元件启动后使衔铁继续保持在合闸位置。电容器用于保证装置只动作一次。充电电阻:用于限制电容器的充电速度。附加电阻:用于保证时间元件线圈热稳定性。
重合闸继电器动作原理:用于单端供电的一次重合闸位置。断路器在合闸位置,重合闸装置中的电容器经过按钮触点EF和电阻已经充满电,整个装置准备着动作。
技术参数:直流额定电压为110V、220V。
在额定电压下,当环境温度为20±5℃,相对温度不大于70%时,电容器充电到使中间元件动作所必需的时间在15-25S范围内(时间)元件的延时整定在0.5S时。在中间元件吸合后,在电流绕组流过额定电流时同,断开电压绕组的电压,衔铁应保持在吸合位置。
时间元件的线圈串联附加电阻后应能长期经受110%额定电压。DCH重合闸继电器