零线电流消除器的作用HJLS
1、 应用场合
1. Applicable Condition
目前已大量应用于：LED显示屏、广告牌、LED路灯、景观照明、电池化成检测系统、电源生产老化系统、商场、体育馆、舞台、大型商业综合体等场所行业。
Currently zero current eliminator could be used to eliminate over flow of current of zero line for LED display screen, advertising board, LED street lamp, landscape lighting, battery formatting inspection system, manufacturing and aging system of power, emporium, stadium, stage and large-scale complex etc.
2、 常见造成零线电流过大的电子设备
1. Electrical Equipments Which Often Encounter Zero Current Over Flow
l 各种开关电源设备（计算机、电视机、显示器等）；
l Various switching power equipment(computer, television, display screen etc)
l 变频器的大量应用（变频空调、电机节能等）；
l Equipment with mass frequency converter (inverter air conditioner, energy saving motor etc.)
l 各种新光源（LED灯、节能灯、荧光灯等）；
l Various new illuminants (LED lamp, energy saving lamp, fluorescent lamp etc.)
l 办公设备（复印机、传真机等）；
l Office equipments( duplicating machine, fax machine etc.)
l 家用电器（洗衣机、显示屏、微波炉等）；
l Household appliances (washing machine, display screen, micro-oven etc.)
l 电子设备（手机充电器等整流设备）
l electronic equipments (rectifying appliances such as phone charger etc)
3、零线电流产生的原因
1. The cause of zero line current occuring
根据国家标准GB17625.1-2003《电磁兼容 限值 谐波电流发射限值（设备每相输入电流≤16A）》限值要求，对以上设备谐波限值很低，造就产品3次谐波含量很大，由于3次谐波矢量方向角度一致，使用寿命次谐波向零线叠加，造成零线电流过大，。单体功率极少，单体而言，造成的危害可以忽略不计，但当相当多的单体一起使用时，零线电流大得惊人（严重时超过相线电流的两倍）
According to limit value stipulated by national standard GB17625.1-2003 “Electromagnetic compatibility--Limits--Limits for harmonic current emissions(equipment input current≤16A per phase)”, the harmonic current limit value regulated for above equipment stated under item 3 is very low, it makes the 3rd order harmonic current capacity large, also because the 3rd order harmonic current is consistent in vector, direction and angle, the working life of sub harmonic current overlay to zero line, these makes the current of zero line over flow. Power capacity of single equipment is low and we could ignore its damage, but when a great amount of equipments are used at the same time, current of zero line will be great (it will be more than twice of the phase line in serious situation).
1、技术数据
1. Technical Specification
该表列出的技术数据是常用规格，若有特殊要求，请联系我们。
This form states the normal specification, if there is special requirement, please contact us.
工作条件
Working condition
最大相对湿度： 90%RH
Max. Relative Humidity: 90%RH
环境最高温度：40℃
Max. ambient temperature: 40℃
最高海拔高度：2000m
Max. altitude: 2000m
基本电气参数
Basic specification
额定频率：50Hz
Rated frequency: 50Hz
额定电压：400V
Rated voltage: 400V
整机损耗：＜3W/KVA
Loss of the whole equipment: ＜3W/KVA
连接方式
Connecting method
三相四线制系统，电缆或铜排连接
Three phases four wires, connected by cable or copper bar.
绝缘等级
Insulation grade
H级（正常工况下B级）
Grade H(normal condition: grade B)
防护等级
Protection grade
IP30
执行标准
Standard
GB/T14549-1993、GB10941-1996、GB19212.1-2003、GB6450-1986、 GB/T501-1991
2、接线方式
1. Wiring connection
接线方法：零线消除器串联接法。共七根线，三进三出，零线并接，三相电首先接进零线消除器进线端，出线端/出线接负载，一根零线直接并接到系统零线。
Wiring connection: zero current eliminator is connected in series. There are seven wires, three input wire and three output wire, one zero line connected in parallel. The triphase wire should be firstly connected to input terminal of zero current eliminator, the output terminal of zero current eliminator should be connected to loading equipment, and one zero line should be connected directly to zero line of the system.
电源进线： Input Wire of Power 电源零线： Zero Line of Power
断路器的进线端：Input terminal Of Breaker
零序滤波器：Zero Current Eliminator
出线端：Output Terminal of Wire 负载设备： Loading Equipment
磁性零序滤波器：Magnetic Zero Current Eliminator
