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发明公开
CN104201728A 一种可自动判断电源极性的便携式充电机 无效 - 撤回

一种可自动判断电源极性的便携式充电机
摘要：
本发明公开了一种可自动判断电源极性的便携式充电机，其包括便携式充电机（1）、便携式充电机输出开关（2）、保护继电器动作接点（3），其特征在于保护继电器动作接点（3）连接极性检测判装置（4），极性检测判装置（4）包括保护继电器的启动模块（4-1）、极性检测判断模块（4-2）、灯光、音响告警模块（4-3），保护继电器的启动模块（4-1）、极性检测判断模块（4-2）、灯光、音响告警模块（4-3）均分别与变电站直流系统电源母线（5）、保护继电器动作接点（3）相连，本发明及时报警，保证人身和设备安全，接线简单，工作量小，安全可靠。
摘要（英）：

The invention discloses a portable charger capable of automatically judging the polarity of a power supply. The portable charger comprises a portable charger (1), a portable charger output switch (2) and a protective relay action contact (3), and is characterized in that the protective relay action contact (3) is connected with a polarity detection judgment device (4); the polarity detection judgment device (4) comprises a starting module (4-1) of a protective relay, a polarity detection judgment module (4-2) and a lamplight and sound alarm module (4-3); the starting module (4-1) of the protective relay, the polarity detection judgment module (4-2) and the lamplight and sound alarm module (4-3) are connected with a direct-current system electric power bus (5) of a transformer substation and the protective relay action contact (3) respectively. The portable charger has the advantages of capabilities of alarming in time and ensuring personal and equipment safety, easiness in wiring, small workload, safety and reliability.

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