A mass of power electronics equipments with nonlinear characteristic are the main source of harmonics in low-voltage power system.
低压电力系统中大量具有非线性特性的电力电子设备是产生谐波的主要原因。
A remote automation meter data reading system for low voltage electric power user is introduced. It gives configuration block diagram, principle and system characteristic.
介绍一种低压电力用户远程自动抄表系统，给出了该系统的结构框图，简述了其工作原理与系统的功能特点。
In this paper, the principle system, design characteristic, technology performance of high voltage vacuum power supply in GNG series inverter type are briefly mentioned.
本文就GNG系列逆变式高压真空直流电源的原理系统、设计特点、技术性能等做一简要论述。
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