安规网

 找回密码
 注册安规
安规论坛 | 仪器设备 | 求职招聘 | 国家标准 公告 | 教程 | 家电 | 灯具 | 环保 | ITAV 签到 充值 在线 打卡 设备 好友| 帖子| 空间| 日志| 相册
IP淋雨机 | 证书查询 | 规范下载 | 资质查询 招聘 | 考试 | 线缆 | 玩具 | 标准 | 综 合 红包 邮箱 打卡 工资 禁言 分享| 记录| 道具| 勋章| 任务
水平垂直燃烧机 | 针焰 | 灼热丝 | 漏电起痕
IP防水防尘设备|拉力机|恒温恒湿|标准试验指
灯头量规|插头量规|静风烤箱|电池设备|球压
万年历 | 距元旦节还有
自2007年5月10日,安规网已运行
IP淋雨设备| 恒温恒湿箱| 拉力机| 医疗检测设备沙特Saber 埃及COI 中东GCC|CoC直接发证机构水平垂直燃烧机|灼热丝|针焰试验机|漏电起痕试验机
灯头量规|试验指|插头插座量规|灯具检测设备耐划痕试验机|可程式恒温恒湿试验箱 | 耦合器设备广东安规-原厂生产-满足标准-审核无忧
查看: 1961|回复: 3
打印 上一主题 下一主题

[逆变器认证] 求光伏逆变器GFCI测试方法!

[复制链接]
跳转到指定楼层
楼主
发表于 2011-4-13 23:03 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
广东安规检测
有限公司提供:
在逆变器认证中有GFCI(接地漏电流)测试,求测试方法。: {0 j$ N5 |. O# Q0 r- a, f/ I
是否是在正常启动完成以后接漏电测试仪即可?+ }, R, u/ y+ R( ]4 P6 c- U9 @
软件测试行不行?外接1UF的电解电容,软件自动判断漏电流过大。在自动报警。
沙发
发表于 2011-4-13 23:52 | 只看该作者
对单相设备做法是将火线和地之间接一个10K可调电阻,调节电阻值使得GFCI动作,同时记录一下火线和零线的电流值作为参考,并记录火线和零线的不均衡电流(可能是AC,可能是DC也可能都有)! _. {" g1 E+ B% p
A GFCI is much more subtle. When you look at a normal 120-volt outlet in the United States, there are two vertical slots and then a round hole centered below them. The left slot is slightly larger than the right. The left slot is called "neutral," the right slot is called "hot" and the hole below them is called "ground." If an appliance is working properly, all electricity that the appliance uses will flow from hot to neutral. A GFCI monitors the amount of current flowing from hot to neutral. If there is any imbalance, it trips the circuit. It is able to sense a mismatch as small as 4 or 5 milliamps, and it can react as quickly as one-thirtieth of a second.
板凳
发表于 2011-4-14 00:27 | 只看该作者
这个产品很少做过哦,只做过CCC
地板
发表于 2011-4-14 09:13 | 只看该作者
引用第1楼包子于2011-04-13 23:52发表的  :" ?1 U- Y4 H6 [' X$ F3 l
对单相设备做法是将火线和地之间接一个10K可调电阻,调节电阻值使得GFCI动作,同时记录一下火线和零线的电流值作为参考,并记录火线和零线的不均衡电流(可能是AC,可能是DC也可能都有)
8 l' d2 G$ v9 t5 T# I! GA GFCI is much more subtle. When you look at a normal 120-volt outlet in the United States, there are two vertical slots and then a round hole centered below them. The left slot is slightly larger than the right. The left slot is called "neutral," the right slot is called "hot" and the hole below them is called "ground." If an appliance is working properly, all electricity that the appliance uses will flow from hot to neutral. A GFCI monitors the amount of current flowing from hot to neutral. If there is any imbalance, it trips the circuit. It is able to sense a mismatch as small as 4 or 5 milliamps, and it can react as quickly as one-thirtieth of a second.

3 R* U* `) W1 c6 J! i% a包子,这个测试是不是有专门的仪器测的??
您需要登录后才可以回帖 登录 | 注册安规

本版积分规则

关闭

安规网为您推荐上一条 /2 下一条

QQ|关于安规|小黑屋|安规QQ群|Archiver|手机版|安规网 ( 粤ICP13023453-10 )

GMT+8, 2024-11-30 19:58 , Processed in 0.067574 second(s), 20 queries .

Powered by Discuz! X3.2

© 2001-2013 Comsenz Inc.|广东安规赞助

快速回复 返回顶部 返回列表