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JSJW-3、6、10户内电压互感器
概述
JSJW-3、6、10户内电压互感器为三相三绕组油浸式五铁芯柱的户内型产品,适用于交流50HZ、10KV及以下线路,供测量电压、电能和功率以及继电保护用。
结构
本型电压互感器的铁芯采用带有旁铁轭的芯式结构,由条形硅钢片叠成,每相有三个绕组即剩余电压绕组、二次绕组及一次绕组,其接线见图3-1-22。剩余电压绕组绕在绝缘纸筒上,外面包以绝缘纸板。再在绝缘纸板的外面绕制二次绕组。最后,将一次绕组分段绕在二次绕组外面的角环上,一次绕组的最外层均放有静电屏,并用纸板和直纹布带扎紧。三个绕组构成一体,ABC三相共有三组绕组分别套在铁芯中间的三个铁芯柱上。
器身用铁芯夹件固定在箱盖上,箱盖上装有高低压出线瓷套、铭牌、吊攀及带有呼吸孔的注油塞。油箱用钢板焊成,呈现圆筒形,箱壁上部焊有吊起整个互感器的吊攀,下部装有接地螺栓和放油塞。箱底由钢板剪成八角形,其上备有4个安装孔
技术参数
型号 | 额定电压比 | 额定输出 | 电压线圈的最大输出 | 工频耐压 | ||
0.5级 | 1级 | 3级 | ||||
JSJW-3 | 3000/√3 100/√3 100/√3 | 50 | 80 | 150 | 320 | 24 |
JSJW-6 | 6000/√3 100/√3 100/√3 | 80 | 150 | 320 | 640 | 32 |
JSJW-10 | 100/3/√3 100/√3 100/√3 | 120 | 240 | 480 | 960 | 42 |
注:1.在一次绕组施加三相平衡的额定电压,剩余电压绕组开口三角形接有200VA(COSΦ=0.8)负载的情况下,当一次绕组任何一相在接线端和中点短接时,则开口三角形端电压应为:
(1)二次绕组接有0.5级额定负载时为100±10V
(2)二次绕组空载时为100±3V
2.互感器能在115%倍额定电压下长期运行
外形及安装尺寸图
JSJW-3、6、10户内电压互感器外形及安装尺寸图
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PRODUCTS
Factory Add: No 172 daqing road shipu xiangshan ningbo zhejiang,china
备案号:浙ICP备20003779号