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实用新型
CN204012849U 一种可自动判断电源极性的便携式充电机 失效 - 权利终止

一种可自动判断电源极性的便携式充电机
摘要：
本实用新型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，本实用新型及时报警，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 utility model discloses a portable charger capable of automatically judging polarity of a power supply, which comprises a portable charger (1), a portable charger output switch (2), and a protection relay operating contact (3), and is characterized in that the protection relay operating contact (3) is connected with a polarity detection judging device (4); the polarity detection judging device (4) comprises a protection relay start module (4-1), a polarity detection judging module (4-2), a lamp and a sound alarming module (4-3); and the protection relay start module (4-1), the polarity detection judging module (4-2), the lamp and the sound alarming module (4-3) are respectively connected with a substation DC system power bus (5) and the protection relay operating contact (3). The portable charger capable of automatically judging polarity of the power supply has the advantages that timely alarming can be carried out, personal and equipment safety can be ensured, wiring is simple, the workload is small, and the operation is safe and reliable.

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