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名称:干式高压电流互感器   浏览次数:11037 次
产品特点 Product features
无瓷、无气、不充油
防火、防爆
免维护
体积小、重量轻
能够在酷热(50℃)及严寒(-50℃)环境下正常运行
Non-porcelain,non-gas,unfilled oil
Fire proof,explosion proof
Maintenance-free
Smaller volume,lighter weight
Ambient air temperature form -50 ℃ to 50℃
■ 技术参数 Technical parameters
最高电压:40.5~550kV
额定频率:50Hz、60Hz
额定一次电流:25~5000A
额定二次电流:1A、2A、5A
测量线圈准确级次:0.2S、0.2、0.5S、0.5
普通保护线圈准确级次:5P、10P、PR、PX
暂态保护线圈准确级次:TPS、TPX、TPY、TPZ
额定输出容量:5~50VA
仪表保安系数:5、10
准确限值系数:5、10、15、20、25、30、40
暂态保护级的准确限值条件:与用户协商确定
二次线圈个数:1~8个
Highest voltage:40.5~550kV
Rated frequency:50Hz、60Hz
Rated primary current:25~5000A
Rated secondary current:1A、2A、5A
Measuring winding accuracy class:0.2S,0.2,0.5S,0.5
Protective winding accuracy class:5P,10P,PR,PX
Transient protective winding accuracy class:TPS,TPX,TPY,TPZ
Rated output:5~50VA
Instrument security factor:5,10
Accuracy limit factor:5,10,15,20,25,30,40
Accuracy limit condition or transient protective winding:confering with consumer
Number of secondary winding:1~8
■ 环境条件 Environment condition
使用场所:户内或户外
环境温度:-50~50℃
海拔高度:不超过1000m(超过1000m时另议)
环境污秽等级:Ⅱ、Ⅲ、Ⅳ级
Using place:indoor or outdoor
Ambient air temperature:-50~50℃
Height:1000m(confering with consumer if above 1000m)
Pollution class: Ⅱ、Ⅲ、Ⅳ
■ 主要性能 Main performance
      产品性能满足GB1208《电流互感器》及IEC60044-1《Instrument transformers-Part1:Current transformers》的要求。
The main performance of the product can satisfy the requests of GB1208 《Current transformers》and IEC60044-1《Instrument transformers-Part1:Currenttransformers》.
(1)额定绝缘水平及局部放电水平 Rated insulation level and partial discharge level
最高电压
Highest voltage
Um(kV)
额定绝缘水平
Rated insulation level
局部放电水平
Partial discharge level
工频耐受电压
Power frequency withstand voltage
(kV)
雷电冲击耐受电压
Lightning impulse
withstand voltage
(kV)
操作冲击耐受电压
Operation impulse
withstand voltage
(kV)
局部放电测量电压
Partial discharge
test voltage
(kV)
局部放电量
Partial discharge
(pC)
      40.5 95 185 -- 40.5/28 10/5
      52 95 250 -- 52/36 10/5
      72.5 160 350 -- 72.5/50 10/5
      126(123) 230 550 -- 126/87 10/5
      145 275 650 -- 145/101 10/5
      170 325 750 -- 170/118 10/5
      252(245) 460 1050 -- 252/175 10/5
      363 510 1175 950 363/252 20/5
      420 510 1175 1050 420/291 20/5
      550 740 1675 1175 550/381 20/5
(2)介质损耗因数 Dielectric loss factor
在10kV及Um/√3电压下测量,介质损耗因数不大于0.0025(测试温度为10~40℃ )。
Dielectric loss factor is not greater than 0.0025 under 10kV and Um/√3kV(ambient air temperature 10~40℃).
(3)温升限值 Temperature rising limit
绕组最高温升不大于75K。
The highest temperature rising of winding is not greater than 75K.
(4)短时热电流(Ith)及动稳定电流(Idyn)
Short-time thermal current (Ith) and dynamic current (Idyn)
40.5~72.5kV电流互感器:Ith=31.5kA(4s),Idyn=80kA
123~550kV电流互感器:Ith=50kA(3s),dyn=125kA
40.5~72.5kV CT: Ith=31.5kA(4s),dyn=80kA
123~550kV CT:Ith=50kA(3s),dyn=125kA
(5)机械强度要求 Request of mechanical strength
按照GB 1208《电流互感器》及IEC60044-1《Instrument transformers-Part1:Current transfomers》的要求。
■ 验收及维护 Acceptance and maintenance
    每台干式高压电流互感器出厂前一次绕组进行了工频耐压、局部放电测量、介质损耗因数测量及末屏耐压试验,二次绕组进行了标志检验、绝缘试验及误差测量。到现场后,可以按BG50150《电气装置安装工程 电气设备交接试验标准》进行。干式高压电流互感器基本不需要维护,每2~3年测量一次电容量及介质损耗因数即可。
Every dry type high voltage current transformer has passed tests including poewr frequency withstand voltage,partial discharge,dielectric loss factor,terminal withstand voltage,sign examination,insulation resistance,error measuring before leaving the factory. We follow up GB50150 《Standard for hand-over test of electric equipment   electric equipment installation engineering》when the products are handed over. In generally,the products need no maintenance basically.It is enough to check the primary winding capacity and dielectic loss factor every 2~3 years.
■ 运输及安装 Transportation and installation
运输时用防震材料包装,防止剧烈震动。
吊装时应防止硅橡胶伞裙受损。
出厂文件包括:产品合格证、试验报告和产品说明书,均放入包装箱内,与产品一起运输。
安装好后应将干式高压电流互感器的末屏引线可靠接地。
The products should be packed by shockproof material when they are transported.
Pay attention to the silicon rubber umbrellas when the products are suspended.
Documents:certificate,test report,product manual.They should be put into packing box with the products.
Please earth reliably the terminal of the products after installing.
■ 订货须知 Notice for order
订货时至少需提出下述参数:
一次参数:最高电压、额定电流比、短时热电流及动稳定电流、外绝缘爬虫距离。
二次参数:二次线圈个数、抽头情况、准确级及相应的负荷、仪表保安系数及准确限值系数,对暂态保护级还需提出其准确限值条件。
环境参数:环境温度、海拔高度、污秽等级。
如有特殊要求,可按用户需要进行设计。
You should specify the following parameters at least when ordering:
Primary parameters:highest voltage,rated current ratio,short-time thermal current and dynamic current, creepage distance.
Secondary parameters:number of secondary winding,tapped case,accuracy class and load,instrument security factor and accuracy limit factor,accuracy limit condition of transient protective winding.
Environment condition:ambient air temperature,height,pollution class.
We can offer the special products too.
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