...而配置的接口,其基本功能有; 馈电(Battery feed):交换机通过用户线向共电式话机直流馈电; 过压保护(Over voltage Protection):防止用户线上的电压冲击或过压而损坏交换机。 振铃(Ringing):向被叫用户话机馈送铃流。
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over-voltage protection 过电压保护 ; 过压保护 ; 过压保 ; 电路亦提供了过压保护
Over voltage protection test 过电压保护测试 ; 过压保护测试 ; 电压保护测试 ; 压保护测试
atmospheric over voltage protection 雷电过电压保护
Output over voltage protection 输出过压保护
over voltage protection varistor 过电压保护电压敏电阻器
output over-voltage protection 输出过压保护 ; 输出过电压保护
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The series mixed SPD is a new method of using for the railroad signal system of over voltage protection.
串混型SPD是铁路信号系统过电压防护的新用法。
Finally, with the capacitor protection and the over voltage protection as an example, a model for the equipment and the function in the IEC 61850 protection is developed.
详细阐述了该类保护装置的硬件设计方法和实现形式,并以电容器保护装置为例,初步建立了装置的IEC 61850设备模型。
Schematic circuits of rectifier and filter, assistant power, over voltage protection, and charge control for storage battery are suggested , their working principle are also discussed.
同时给出了整流滤波电路、辅助源电路、过压保护电路、蓄电池的充放电控制电路的电原理图及其工作原理。
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