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发明公开
CN102891530A 一种防控母失压装置 无效 - 撤回

一种防控母失压装置
摘要：
本发明公开了一种防控母失压装置，主降压装置的一端通过触点K5连接在合母线正极上，另一端通过触点K6连接在控母线正极上；所述直流接触器的一端通过触点K1连接在主降压装置与触点K6之间，另一端通过触点K3连接在合母线或控母线负极上；所述备用降压装置的一端通过触点K2和触点K4连接在合母线正极上，另一端连接在控母线正极上，在触点K2和触点K4之间设有常闭触点K7，所述常闭触点K7与直流接触器相适配。设置一个备用降压装置，并且通过直流接触器来控制该备用降压装置的通断，在主降压装置开路情况下通电，维持控母不失压，并且使控母电压达到正常值，不仅结构简单实用，而且操作简单不易出现差错。
摘要（英）：

The invention discloses a control bus voltage loss prevention device. According to the device, one end of a main voltage reduction device is connected to the positive pole of a closure bus through a contact K5, and the other end of the main voltage reduction device is connected to the positive pole of a control bus through a contact K6; one end of a direct current contactor is connected between the main voltage reduction device and the contact K6 through a contact K1, and the other end of the direct current contactor is connected to the negative pole of the closure bus or the control bus through a contact K3; one end of a standby voltage reduction device is connected to the positive pole of the closure bus through a contact K2 and a contact K4, and the other end of the standby voltage reduction device is connected to the positive pole of the control bus; a normally closed contact K7 is arranged between the contact K2 and the contact K4; and the normally closed contact K7 is adaptive to the direct current contactor. According to the standby voltage reduction device, and the on/off of the standby voltage reduction device is controlled through the direct current contactor, so that the main voltage reduction device is powered up under an open circuit condition, no voltage loss of the control bus is maintained, and the voltage of the control bus reaches a normal value. The control bus voltage loss prevention device is simple in structure, practical and easy to operate, and an error is difficult to occur.

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