玉田县SANIL开关SKA-18MS-T,M18,2-8mm,Sheild,AC20-250V韩国Sinwoo S-CON变送器。中山立讯电气有限公司,中山朗立电气有限公司DSC-2A1-W DSC-2A1-X DSC-2A1-Y DSC-2A1-Z
DSC-2A2-W DSC-2A2-X DSC-2A2-Y DSC-2A2-Z
DSC-2A3-W DSC-2A3-X DSC-2A3-Y DSC-2A3-Z
DSC-2A4-W DSC-2A4-X DSC-2A4-Y DSC-2A4-Z
DSC-2A5-W DSC-2A5-X DSC-2A5-Y DSC-2A5-Z
DSC-2A6-W DSC-2A6-X DSC-2A6-Y DSC-2A6-Z
DSC-2A7-W DSC-2A7-X DSC-2A7-Y DSC-2A7-Z
DSC-2A8-W DSC-2A8-X DSC-2A8-Y DSC-2A8-Z
DSC-2AR-W DSC-2AR-X DSC-2AR-Y DSC-2AR-Z
DSC-2AN-W DSC-2AN-X DSC-2AN-Y DSC-2AN-Z
DSC-2B1-W DSC-2B1-X DSC-2B1-Y DSC-2B1-Z
DSC-2B2-W DSC-2B2-X DSC-2B2-Y DSC-2B2-Z
DSC-2B3-W DSC-2B3-X DSC-2B3-Y DSC-2B3-Z
DSC-2B4-W DSC-2B4-X DSC-2B4-Y DSC-2B4-Z
DSC-2B5-W DSC-2B5-X DSC-2B5-Y DSC-2B5-Z
DSC-2B6-W DSC-2B6-X DSC-2B6-Y DSC-2B6-Z
DSC-2B7-W DSC-2B7-X DSC-2B7-Y DSC-2B7-Z
DSC-2B8-W DSC-2B8-X DSC-2B8-Y DSC-2B8-Z
DSC-2BR-W DSC-2BR-X DSC-2BR-Y DSC-2BR-Z
DSC-2BN-W DSC-2BN-X DSC-2BN-Y DSC-2BN-Z
DSC-2C1-W DSC-2C1-X DSC-2C1-Y DSC-2C1-Z
DSC-2C2-W DSC-2C2-X DSC-2C2-Y DSC-2C2-Z
DSC-2C3-W DSC-2C3-X DSC-2C3-Y DSC-2C3-Z
DSC-2C4-W DSC-2C4-X DSC-2C4-Y DSC-2C4-Z
DSC-2C5-W DSC-2C5-X DSC-2C5-Y DSC-2C5-Z
DSC-2C6-W DSC-2C6-X DSC-2C6-Y DSC-2C6-Z
DSC-2C7-W DSC-2C7-X DSC-2C7-Y DSC-2C7-Z
DSC-2C8-W DSC-2C8-X DSC-2C8-Y DSC-2C8-Z
DSC-2CR-W DSC-2CR-X DSC-2CR-Y DSC-2CR-Z
DSC-2CN-W DSC-2CN-X DSC-2CN-Y DSC-2CN-Z
DSC-2D1-W DSC-2D1-X DSC-2D1-Y DSC-2D1-Z
DSC-2D2-W DSC-2D2-X DSC-2D2-Y DSC-2D2-Z
DSC-2D3-W DSC-2D3-X DSC-2D3-Y DSC-2D3-Z
DSC-2D4-W DSC-2D4-X DSC-2D4-Y DSC-2D4-Z
DSC-2D5-W DSC-2D5-X DSC-2D5-Y DSC-2D5-Z
DSC-2D6-W DSC-2D6-X DSC-2D6-Y DSC-2D6-Z
DSC-2D7-W DSC-2D7-X DSC-2D7-Y DSC-2D7-Z
DSC-2D8-W DSC-2D8-X DSC-2D8-Y DSC-2D8-Z
DSC-2DR-W DSC-2DR-X DSC-2DR-Y DSC-2DR-Z
DSC-2DN-W DSC-2DN-X DSC-2DN-Y DSC-2DN-Z
DSC-2E1-W DSC-2E1-X DSC-2E1-Y DSC-2E1-Z
DSC-2E2-W DSC-2E2-X DSC-2E2-Y DSC-2E2-Z
DSC-2E3-W DSC-2E3-X DSC-2E3-Y DSC-2E3-Z
DSC-2E4-W DSC-2E4-X DSC-2E4-Y DSC-2E4-Z
DSC-2E5-W DSC-2E5-X DSC-2E5-Y DSC-2E5-Z
DSC-2E6-W DSC-2E6-X DSC-2E6-Y DSC-2E6-Z
DSC-2E7-W DSC-2E7-X DSC-2E7-Y DSC-2E7-Z
DSC-2E8-W DSC-2E8-X DSC-2E8-Y DSC-2E8-Z
DSC-2ER-W DSC-2ER-X DSC-2ER-Y DSC-2ER-Z
DSC-2EN-W DSC-2EN-X DSC-2EN-Y DSC-2EN-Z
DSC-2F1-W DSC-2F1-X DSC-2F1-Y DSC-2F1-Z
DSC-2F2-W DSC-2F2-X DSC-2F2-Y DSC-2F2-Z
DSC-2F3-W DSC-2F3-X DSC-2F3-Y DSC-2F3-Z
DSC-2F4-W DSC-2F4-X DSC-2F4-Y DSC-2F4-Z
DSC-2F5-W DSC-2F5-X DSC-2F5-Y DSC-2F5-Z
DSC-2F6-W DSC-2F6-X DSC-2F6-Y DSC-2F6-Z
DSC-2F7-W DSC-2F7-X DSC-2F7-Y DSC-2F7-Z
DSC-2F8-W DSC-2F8-X DSC-2F8-Y DSC-2F8-Z
DSC-2FR-W DSC-2FR-X DSC-2FR-Y DSC-2FR-Z
DSC-2FN-W DSC-2FN-X DSC-2FN-Y DSC-2FN-Z
DSC-2G1-W DSC-2G1-X DSC-2G1-Y DSC-2G1-Z
DSC-2G2-W DSC-2G2-X DSC-2G2-Y DSC-2G2-Z
DSC-2G3-W DSC-2G3-X DSC-2G3-Y DSC-2G3-Z
DSC-2G4-W DSC-2G4-X DSC-2G4-Y DSC-2G4-Z
DSC-2G5-W DSC-2G5-X DSC-2G5-Y DSC-2G5-Z

可控硅方可关断。当然，如果Ea极性反接，BGBG2由于受到反向电压作用将处于截止状态。这时，即使输入触发信号，可控硅也不能工作。反过来，Ea接成正向，而触动发信号是负的，可控硅也不能导通。另外，如果不加触发信号，而正向阳极电压大到超过一定值时，可控硅也会导通，但已属于非正常工作情况了。可控硅这种通过触发信号（小的触发电流）来控制导通（可控硅中通过大电流）的可控特性，正是它区别于普通硅整流二极管的重要特征。普通可控硅的三个电极可以用万用表欧姆挡R×100挡位来测。大家知道，晶闸管G、K之间是一个PN结（a），相当于一个二极管，G为正极、K为负极，所以，按照测试二极管的方法，找出三个极中的两个极。
玉田县SANIL开关SKA-18MS-T,M18,2-8mm,Sheild,AC20-250V

DSC-2G6-W DSC-2G6-X DSC-2G6-Y DSC-2G6-Z
DSC-2G7-W DSC-2G7-X DSC-2G7-Y DSC-2G7-Z
DSC-2G8-W DSC-2G8-X DSC-2G8-Y DSC-2G8-Z
DSC-2GR-W DSC-2GR-X DSC-2GR-Y DSC-2GR-Z
DSC-2GN-W DSC-2GN-X DSC-2GN-Y DSC-2GN-Z
DSC-2H1-W DSC-2H1-X DSC-2H1-Y DSC-2H1-Z
DSC-2H2-W DSC-2H2-X DSC-2H2-Y DSC-2H2-Z
DSC-2H3-W DSC-2H3-X DSC-2H3-Y DSC-2H3-Z
DSC-2H4-W DSC-2H4-X DSC-2H4-Y DSC-2H4-Z
DSC-2H5-W DSC-2H5-X DSC-2H5-Y DSC-2H5-Z
DSC-2H6-W DSC-2H6-X DSC-2H6-Y DSC-2H6-Z
DSC-2H7-W DSC-2H7-X DSC-2H7-Y DSC-2H7-Z
DSC-2H8-W DSC-2H8-X DSC-2H8-Y DSC-2H8-Z
DSC-2HR-W DSC-2HR-X DSC-2HR-Y DSC-2HR-Z
DSC-2HN-W DSC-2HN-X DSC-2HN-Y DSC-2HN-Z

DSC-4A1-W DSC-4A1-X DSC-4A1-Y DSC-4A1-Z
DSC-4A2-W DSC-4A2-X DSC-4A2-Y DSC-4A2-Z
DSC-4A3-W DSC-4A3-X DSC-4A3-Y DSC-4A3-Z
DSC-4A4-W DSC-4A4-X DSC-4A4-Y DSC-4A4-Z
DSC-4A5-W DSC-4A5-X DSC-4A5-Y DSC-4A5-Z
DSC-4A6-W DSC-4A6-X DSC-4A6-Y DSC-4A6-Z
DSC-4A7-W DSC-4A7-X DSC-4A7-Y DSC-4A7-Z
DSC-4A8-W DSC-4A8-X DSC-4A8-Y DSC-4A8-Z
DSC-4AR-W DSC-4AR-X DSC-4AR-Y DSC-4AR-Z
DSC-4AN-W DSC-4AN-X DSC-4AN-Y DSC-4AN-Z
DSC-4B1-W DSC-4B1-X DSC-4B1-Y DSC-4B1-Z
DSC-4B2-W DSC-4B2-X DSC-4B2-Y DSC-4B2-Z
DSC-4B3-W DSC-4B3-X DSC-4B3-Y DSC-4B3-Z
DSC-4B4-W DSC-4B4-X DSC-4B4-Y DSC-4B4-Z
DSC-4B5-W DSC-4B5-X DSC-4B5-Y DSC-4B5-Z
DSC-4B6-W DSC-4B6-X DSC-4B6-Y DSC-4B6-Z
DSC-4B7-W DSC-4B7-X DSC-4B7-Y DSC-4B7-Z
DSC-4B8-W DSC-4B8-X DSC-4B8-Y DSC-4B8-Z
DSC-4BR-W DSC-4BR-X DSC-4BR-Y DSC-4BR-Z
DSC-4BN-W DSC-4BN-X DSC-4BN-Y DSC-4BN-Z
DSC-4C1-W DSC-4C1-X DSC-4C1-Y DSC-4C1-Z
DSC-4C2-W DSC-4C2-X DSC-4C2-Y DSC-4C2-Z
DSC-4C3-W DSC-4C3-X DSC-4C3-Y DSC-4C3-Z
DSC-4C4-W DSC-4C4-X DSC-4C4-Y DSC-4C4-Z
DSC-4C5-W DSC-4C5-X DSC-4C5-Y DSC-4C5-Z
DSC-4C6-W DSC-4C6-X DSC-4C6-Y DSC-4C6-Z
DSC-4C7-W DSC-4C7-X DSC-4C7-Y DSC-4C7-Z
DSC-4C8-W DSC-4C8-X DSC-4C8-Y DSC-4C8-Z
DSC-4CR-W DSC-4CR-X DSC-4CR-Y DSC-4CR-Z
DSC-4CN-W DSC-4CN-X DSC-4CN-Y DSC-4CN-Z
DSC-4D1-W DSC-4D1-X DSC-4D1-Y DSC-4D1-Z
DSC-4D2-W DSC-4D2-X DSC-4D2-Y DSC-4D2-Z
DSC-4D3-W DSC-4D3-X DSC-4D3-Y DSC-4D3-Z
DSC-4D4-W DSC-4D4-X DSC-4D4-Y DSC-4D4-Z
DSC-4D5-W DSC-4D5-X DSC-4D5-Y DSC-4D5-Z
DSC-4D6-W DSC-4D6-X DSC-4D6-Y DSC-4D6-Z
DSC-4D7-W DSC-4D7-X DSC-4D7-Y DSC-4D7-Z
DSC-4D8-W DSC-4D8-X DSC-4D8-Y DSC-4D8-Z
DSC-4DR-W DSC-4DR-X DSC-4DR-Y DSC-4DR-Z
DSC-4DN-W DSC-4DN-X DSC-4DN-Y DSC-4DN-Z
DSC-4E1-W DSC-4E1-X DSC-4E1-Y DSC-4E1-Z
DSC-4E2-W DSC-4E2-X DSC-4E2-Y DSC-4E2-Z

外观精致，按钮人性化，显示屏亮丽。看显示屏：液晶显示屏的好坏直接影响仪表寿命，差的显示屏用了一断时间后字迹会变得模糊，昏暗。常见故障编辑无纸记录仪采用144*144彩色显示屏，设定数据与记录数据具掉电保护功能；采用USBHost技术，提供USB总线接口，实现FAT16文件系统，支持USB移动存储器的数据读写；具有体积小、通道数多、功耗低、精度高、通用性强、运行稳定、可靠性高等特点。常见故障：通道不进数，即改变通道信号值大小，通道显示值无任何变化。A用万用表在接线端子上测量信号是否正常;B检查通道模块开关与信号类型是否设置正确;C打开表壳，检查通道信号电缆是否接好。仪表通电不工作。A检查仪表220V电源端子接线是否正确;B检查仪表丝是否熔断;C拧下仪表后的固定螺钉。
玉田县SANIL开关SKA-18MS-T,M18,2-8mm,Sheild,AC20-250V

DSC-4E3-W DSC-4E3-X DSC-4E3-Y DSC-4E3-Z
DSC-4E4-W DSC-4E4-X DSC-4E4-Y DSC-4E4-Z
DSC-4E5-W DSC-4E5-X DSC-4E5-Y DSC-4E5-Z
DSC-4E6-W DSC-4E6-X DSC-4E6-Y DSC-4E6-Z
DSC-4E7-W DSC-4E7-X DSC-4E7-Y DSC-4E7-Z
DSC-4E8-W DSC-4E8-X DSC-4E8-Y DSC-4E8-Z
DSC-4ER-W DSC-4ER-X DSC-4ER-Y DSC-4ER-Z
DSC-4EN-W DSC-4EN-X DSC-4EN-Y DSC-4EN-Z
DSC-4F1-W DSC-4F1-X DSC-4F1-Y DSC-4F1-Z
DSC-4F2-W DSC-4F2-X DSC-4F2-Y DSC-4F2-Z
DSC-4F3-W DSC-4F3-X DSC-4F3-Y DSC-4F3-Z
DSC-4F4-W DSC-4F4-X DSC-4F4-Y DSC-4F4-Z
DSC-4F5-W DSC-4F5-X DSC-4F5-Y DSC-4F5-Z
DSC-4F6-W DSC-4F6-X DSC-4F6-Y DSC-4F6-Z
DSC-4F7-W DSC-4F7-X DSC-4F7-Y DSC-4F7-Z
DSC-4F8-W DSC-4F8-X DSC-4F8-Y DSC-4F8-Z
DSC-4FR-W DSC-4FR-X DSC-4FR-Y DSC-4FR-Z
DSC-4FN-W DSC-4FN-X DSC-4FN-Y DSC-4FN-Z
DSC-4G1-W DSC-4G1-X DSC-4G1-Y DSC-4G1-Z
DSC-4G2-W DSC-4G2-X DSC-4G2-Y DSC-4G2-Z
DSC-4G3-W DSC-4G3-X DSC-4G3-Y DSC-4G3-Z
DSC-4G4-W DSC-4G4-X DSC-4G4-Y DSC-4G4-Z
DSC-4G5-W DSC-4G5-X DSC-4G5-Y DSC-4G5-Z
DSC-4G6-W DSC-4G6-X DSC-4G6-Y DSC-4G6-Z
DSC-4G7-W DSC-4G7-X DSC-4G7-Y DSC-4G7-Z
DSC-4G8-W DSC-4G8-X DSC-4G8-Y DSC-4G8-Z
DSC-4GR-W DSC-4GR-X DSC-4GR-Y DSC-4GR-Z
DSC-4GN-W DSC-4GN-X DSC-4GN-Y DSC-4GN-Z
DSC-4H1-W DSC-4H1-X DSC-4H1-Y DSC-4H1-Z
DSC-4H2-W DSC-4H2-X DSC-4H2-Y DSC-4H2-Z
DSC-4H3-W DSC-4H3-X DSC-4H3-Y DSC-4H3-Z
DSC-4H4-W DSC-4H4-X DSC-4H4-Y DSC-4H4-Z
DSC-4H5-W DSC-4H5-X DSC-4H5-Y DSC-4H5-Z
DSC-4H6-W DSC-4H6-X DSC-4H6-Y DSC-4H6-Z
DSC-4H7-W DSC-4H7-X DSC-4H7-Y DSC-4H7-Z
DSC-4H8-W DSC-4H8-X DSC-4H8-Y DSC-4H8-Z
DSC-4HR-W DSC-4HR-X DSC-4HR-Y DSC-4HR-Z
DSC-4HN-W DSC-4HN-X DSC-4HN-Y DSC-4HN-Z

DSC-7A1-W DSC-7A1-X DSC-7A1-Y DSC-7A1-Z
DSC-7A2-W DSC-7A2-X DSC-7A2-Y DSC-7A2-Z
DSC-7A3-W DSC-7A3-X DSC-7A3-Y DSC-7A3-Z
DSC-7A4-W DSC-7A4-X DSC-7A4-Y DSC-7A4-Z
DSC-7A5-W DSC-7A5-X DSC-7A5-Y DSC-7A5-Z
DSC-7A6-W DSC-7A6-X DSC-7A6-Y DSC-7A6-Z
DSC-7A7-W DSC-7A7-X DSC-7A7-Y DSC-7A7-Z
DSC-7A8-W DSC-7A8-X DSC-7A8-Y DSC-7A8-Z
DSC-7AR-W DSC-7AR-X DSC-7AR-Y DSC-7AR-Z
DSC-7AN-W DSC-7AN-X DSC-7AN-Y DSC-7AN-Z
DSC-7B1-W DSC-7B1-X DSC-7B1-Y DSC-7B1-Z
DSC-7B2-W DSC-7B2-X DSC-7B2-Y DSC-7B2-Z
DSC-7B3-W DSC-7B3-X DSC-7B3-Y DSC-7B3-Z
DSC-7B4-W DSC-7B4-X DSC-7B4-Y DSC-7B4-Z
DSC-7B5-W DSC-7B5-X DSC-7B5-Y DSC-7B5-Z
DSC-7B6-W DSC-7B6-X DSC-7B6-Y DSC-7B6-Z
DSC-7B7-W DSC-7B7-X DSC-7B7-Y DSC-7B7-Z
DSC-7B8-W DSC-7B8-X DSC-7B8-Y DSC-7B8-Z
DSC-7BR-W DSC-7BR-X DSC-7BR-Y DSC-7BR-Z
DSC-7BN-W DSC-7BN-X DSC-7BN-Y DSC-7BN-Z
DSC-7C1-W DSC-7C1-X DSC-7C1-Y DSC-7C1-Z
DSC-7C2-W DSC-7C2-X DSC-7C2-Y DSC-7C2-Z
DSC-7C3-W DSC-7C3-X DSC-7C3-Y DSC-7C3-Z
DSC-7C4-W DSC-7C4-X DSC-7C4-Y DSC-7C4-Z
DSC-7C5-W DSC-7C5-X DSC-7C5-Y DSC-7C5-Z
DSC-7C6-W DSC-7C6-X DSC-7C6-Y DSC-7C6-Z
DSC-7C7-W DSC-7C7-X DSC-7C7-Y DSC-7C7-Z
DSC-7C8-W DSC-7C8-X DSC-7C8-Y DSC-7C8-Z
DSC-7CR-W DSC-7CR-X DSC-7CR-Y DSC-7CR-Z
DSC-7CN-W DSC-7CN-X DSC-7CN-Y DSC-7CN-Z
DSC-7D1-W DSC-7D1-X DSC-7D1-Y DSC-7D1-Z
DSC-7D2-W DSC-7D2-X DSC-7D2-Y DSC-7D2-Z
DSC-7D3-W DSC-7D3-X DSC-7D3-Y DSC-7D3-Z
DSC-7D4-W DSC-7D4-X DSC-7D4-Y DSC-7D4-Z
DSC-7D5-W DSC-7D5-X DSC-7D5-Y DSC-7D5-Z
DSC-7D6-W DSC-7D6-X DSC-7D6-Y DSC-7D6-Z
DSC-7D7-W DSC-7D7-X DSC-7D7-Y DSC-7D7-Z
DSC-7D8-W DSC-7D8-X DSC-7D8-Y DSC-7D8-Z
DSC-7DR-W DSC-7DR-X DSC-7DR-Y DSC-7DR-Z
DSC-7DN-W DSC-7DN-X DSC-7DN-Y DSC-7DN-Z
DSC-7E1-W DSC-7E1-X DSC-7E1-Y DSC-7E1-Z
DSC-7E2-W DSC-7E2-X DSC-7E2-Y DSC-7E2-Z
DSC-7E3-W DSC-7E3-X DSC-7E3-Y DSC-7E3-Z
DSC-7E4-W DSC-7E4-X DSC-7E4-Y DSC-7E4-Z
DSC-7E5-W DSC-7E5-X DSC-7E5-Y DSC-7E5-Z
DSC-7E6-W DSC-7E6-X DSC-7E6-Y DSC-7E6-Z
DSC-7E7-W DSC-7E7-X DSC-7E7-Y DSC-7E7-Z
DSC-7E8-W DSC-7E8-X DSC-7E8-Y DSC-7E8-Z
DSC-7ER-W DSC-7ER-X DSC-7ER-Y DSC-7ER-Z
DSC-7EN-W DSC-7EN-X DSC-7EN-Y DSC-7EN-Z
DSC-7F1-W DSC-7F1-X DSC-7F1-Y DSC-7F1-Z
DSC-7F2-W DSC-7F2-X DSC-7F2-Y DSC-7F2-Z
DSC-7F3-W DSC-7F3-X DSC-7F3-Y DSC-7F3-Z
DSC-7F4-W DSC-7F4-X DSC-7F4-Y DSC-7F4-Z
DSC-7F5-W DSC-7F5-X DSC-7F5-Y DSC-7F5-Z
DSC-7F6-W DSC-7F6-X DSC-7F6-Y DSC-7F6-Z
DSC-7F7-W DSC-7F7-X DSC-7F7-Y DSC-7F7-Z
DSC-7F8-W DSC-7F8-X DSC-7F8-Y DSC-7F8-Z
DSC-7FR-W DSC-7FR-X DSC-7FR-Y DSC-7FR-Z
DSC-7FN-W DSC-7FN-X DSC-7FN-Y DSC-7FN-Z
DSC-7G1-W DSC-7G1-X DSC-7G1-Y DSC-7G1-Z
DSC-7G2-W DSC-7G2-X DSC-7G2-Y DSC-7G2-Z
DSC-7G3-W DSC-7G3-X DSC-7G3-Y DSC-7G3-Z
DSC-7G4-W DSC-7G4-X DSC-7G4-Y DSC-7G4-Z
DSC-7G5-W DSC-7G5-X DSC-7G5-Y DSC-7G5-Z
DSC-7G6-W DSC-7G6-X DSC-7G6-Y DSC-7G6-Z
DSC-7G7-W DSC-7G7-X DSC-7G7-Y DSC-7G7-Z
DSC-7G8-W DSC-7G8-X DSC-7G8-Y DSC-7G8-Z
DSC-7GR-W DSC-7GR-X DSC-7GR-Y DSC-7GR-Z
DSC-7GN-W DSC-7GN-X DSC-7GN-Y DSC-7GN-Z
DSC-7H1-W DSC-7H1-X DSC-7H1-Y DSC-7H1-Z
DSC-7H2-W DSC-7H2-X DSC-7H2-Y DSC-7H2-Z
DSC-7H3-W DSC-7H3-X DSC-7H3-Y DSC-7H3-Z
DSC-7H4-W DSC-7H4-X DSC-7H4-Y DSC-7H4-Z

但要求有一定的过励磁特性（即当原边电压增加时，铁心中的磁通密度也增加相应倍数而不会损坏）。[3]电压互感器是发电厂、变电所等输电和供电系统不可缺少的一种电器。精密电压互感器是电测试验室中用来扩大量限，测量电压、功率和电能的一种仪器。电压互感器和变压器很相像，都是用来变换线路上的电压。线路上为什么需要变换电压呢？这是因为根据发电、输电和用电的不同情况，线路上的电压大小不一，而且相差悬殊，有的是低压220V和380V，有的是高压几万伏甚至几十万伏。要直接测量这些低压和高压电压，就需要根据线路电压的大小，制作相应的低压和高压的电压表和其他仪表和继电器。这样不仅会给仪表制作带来很大困难，而且更主要的是。
玉田县SANIL开关SKA-18MS-T,M18,2-8mm,Sheild,AC20-250V

DSC-7H5-W DSC-7H5-X DSC-7H5-Y DSC-7H5-Z
DSC-7H6-W DSC-7H6-X DSC-7H6-Y DSC-7H6-Z
DSC-7H7-W DSC-7H7-X DSC-7H7-Y DSC-7H7-Z
DSC-7H8-W DSC-7H8-X DSC-7H8-Y DSC-7H8-Z
DSC-7HR-W DSC-7HR-X DSC-7HR-Y DSC-7HR-Z
DSC-7HN-W DSC-7HN-X DSC-7HN-Y DSC-7HN-Z

DSC-9A1-W DSC-9A1-X DSC-9A1-Y DSC-9A1-Z
DSC-9A2-W DSC-9A2-X DSC-9A2-Y DSC-9A2-Z
DSC-9A3-W DSC-9A3-X DSC-9A3-Y DSC-9A3-Z
DSC-9A4-W DSC-9A4-X DSC-9A4-Y DSC-9A4-Z
DSC-9A5-W DSC-9A5-X DSC-9A5-Y DSC-9A5-Z
DSC-9A6-W DSC-9A6-X DSC-9A6-Y DSC-9A6-Z
DSC-9A7-W DSC-9A7-X DSC-9A7-Y DSC-9A7-Z
DSC-9A8-W DSC-9A8-X DSC-9A8-Y DSC-9A8-Z
DSC-9AR-W DSC-9AR-X DSC-9AR-Y DSC-9AR-Z
DSC-9AN-W DSC-9AN-X DSC-9AN-Y DSC-9AN-Z
DSC-9B1-W DSC-9B1-X DSC-9B1-Y DSC-9B1-Z
DSC-9B2-W DSC-9B2-X DSC-9B2-Y DSC-9B2-Z
DSC-9B3-W DSC-9B3-X DSC-9B3-Y DSC-9B3-Z
DSC-9B4-W DSC-9B4-X DSC-9B4-Y DSC-9B4-Z
DSC-9B5-W DSC-9B5-X DSC-9B5-Y DSC-9B5-Z
DSC-9B6-W DSC-9B6-X DSC-9B6-Y DSC-9B6-Z
DSC-9B7-W DSC-9B7-X DSC-9B7-Y DSC-9B7-Z
DSC-9B8-W DSC-9B8-X DSC-9B8-Y DSC-9B8-Z
DSC-9BR-W DSC-9BR-X DSC-9BR-Y DSC-9BR-Z
DSC-9BN-W DSC-9BN-X DSC-9BN-Y DSC-9BN-Z
DSC-9C1-W DSC-9C1-X DSC-9C1-Y DSC-9C1-Z
DSC-9C2-W DSC-9C2-X DSC-9C2-Y DSC-9C2-Z
DSC-9C3-W DSC-9C3-X DSC-9C3-Y DSC-9C3-Z
DSC-9C4-W DSC-9C4-X DSC-9C4-Y DSC-9C4-Z
DSC-9C5-W DSC-9C5-X DSC-9C5-Y DSC-9C5-Z
DSC-9C6-W DSC-9C6-X DSC-9C6-Y DSC-9C6-Z
DSC-9C7-W DSC-9C7-X DSC-9C7-Y DSC-9C7-Z
DSC-9C8-W DSC-9C8-X DSC-9C8-Y DSC-9C8-Z
DSC-9CR-W DSC-9CR-X DSC-9CR-Y DSC-9CR-Z
DSC-9CN-W DSC-9CN-X DSC-9CN-Y DSC-9CN-Z
DSC-9D1-W DSC-9D1-X DSC-9D1-Y DSC-9D1-Z

其动合触点闭合，与已闭合的KM动合辅助触点形成自锁，电动机正常运行。当电动机发生断相运行时，接在断相上的欠电流继电器释放，相应继电器的动合触点打开，使交流接触器线圈的自锁电路断开，接触器失电释放，电动机停止运转。[2]当通过继电器的电流减小到低于其整定值时就动作的继电器，称为欠电流继电器。当检测的电流大于欠电流设定值时，欠电流输出继电器吸合，否则输出继电器释放。欠电流设定值通过面板按键设置，设置范围为测量范围，控制精度高。面板有欠电流指示灯，内部有报警蜂鸣器。中文名欠电流继电器外文名undercurrentrelay响应时间：≤30ms。外形尺寸：96mm×48mm×112mm,功耗：≤4VA目录1概念2工作原理3常用型号和选择4安装和使用5欠电流继电器断相保护电路概念编辑当通过继电器的电流减小到低于其整定值时就动作的继电器称为欠电流继电器。
玉田县SANIL开关SKA-18MS-T,M18,2-8mm,Sheild,AC20-250V

DSC-9D2-W DSC-9D2-X DSC-9D2-Y DSC-9D2-Z
DSC-9D3-W DSC-9D3-X DSC-9D3-Y DSC-9D3-Z
DSC-9D4-W DSC-9D4-X DSC-9D4-Y DSC-9D4-Z
DSC-9D5-W DSC-9D5-X DSC-9D5-Y DSC-9D5-Z
DSC-9D6-W DSC-9D6-X DSC-9D6-Y DSC-9D6-Z
DSC-9D7-W DSC-9D7-X DSC-9D7-Y DSC-9D7-Z
DSC-9D8-W DSC-9D8-X DSC-9D8-Y DSC-9D8-Z
DSC-9DR-W DSC-9DR-X DSC-9DR-Y DSC-9DR-Z
DSC-9DN-W DSC-9DN-X DSC-9DN-Y DSC-9DN-Z
DSC-9E1-W DSC-9E1-X DSC-9E1-Y DSC-9E1-Z
DSC-9E2-W DSC-9E2-X DSC-9E2-Y DSC-9E2-Z
DSC-9E3-W DSC-9E3-X DSC-9E3-Y DSC-9E3-Z
DSC-9E4-W DSC-9E4-X DSC-9E4-Y DSC-9E4-Z
DSC-9E5-W DSC-9E5-X DSC-9E5-Y DSC-9E5-Z
DSC-9E6-W DSC-9E6-X DSC-9E6-Y DSC-9E6-Z
DSC-9E7-W DSC-9E7-X DSC-9E7-Y DSC-9E7-Z
DSC-9E8-W DSC-9E8-X DSC-9E8-Y DSC-9E8-Z
DSC-9ER-W DSC-9ER-X DSC-9ER-Y DSC-9ER-Z
DSC-9EN-W DSC-9EN-X DSC-9EN-Y DSC-9EN-Z
DSC-9F1-W DSC-9F1-X DSC-9F1-Y DSC-9F1-Z
DSC-9F2-W DSC-9F2-X DSC-9F2-Y DSC-9F2-Z
DSC-9F3-W DSC-9F3-X DSC-9F3-Y DSC-9F3-Z
DSC-9F4-W DSC-9F4-X DSC-9F4-Y DSC-9F4-Z
DSC-9F5-W DSC-9F5-X DSC-9F5-Y DSC-9F5-Z
DSC-9F6-W DSC-9F6-X DSC-9F6-Y DSC-9F6-Z
DSC-9F7-W DSC-9F7-X DSC-9F7-Y DSC-9F7-Z
DSC-9F8-W DSC-9F8-X DSC-9F8-Y DSC-9F8-Z
DSC-9FR-W DSC-9FR-X DSC-9FR-Y DSC-9FR-Z
DSC-9FN-W DSC-9FN-X DSC-9FN-Y DSC-9FN-Z
DSC-9G1-W DSC-9G1-X DSC-9G1-Y DSC-9G1-Z
DSC-9G2-W DSC-9G2-X DSC-9G2-Y DSC-9G2-Z
DSC-9G3-W DSC-9G3-X DSC-9G3-Y DSC-9G3-Z
DSC-9G4-W DSC-9G4-X DSC-9G4-Y DSC-9G4-Z
DSC-9G5-W DSC-9G5-X DSC-9G5-Y DSC-9G5-Z
DSC-9G6-W DSC-9G6-X DSC-9G6-Y DSC-9G6-Z

要直接制作高压仪表，直接在高压线路上测量电压，那是不可能的，而且也是不允许的。主要类型编辑按安装地点可分为户内式和户外式[4]35kV及以下多制成户内式；35kV以上则制成户外式。按相数可分为单相和三相式35kV及以上不能制成三相式。按绕组数目可分为双绕组和三绕组电压互感器，三绕组电压互感器除一次侧和基本二次侧外，还有一组辅助二次侧，供接地保护用。按绝缘方式可分为干式、浇注式、油浸式和充气式[1]。干式电压互感器结构简单、无着火和危险，但绝缘强度较低，只适用于6kV以下的户内式装置；浇注式电压互感器结构紧凑、维护方便，适用于3kV～35kV户内式配电装置；油浸式电压互感器绝缘性能较好。
玉田县SANIL开关SKA-18MS-T,M18,2-8mm,Sheild,AC20-250V

DSC-9G7-W DSC-9G7-X DSC-9G7-Y DSC-9G7-Z
DSC-9G8-W DSC-9G8-X DSC-9G8-Y DSC-9G8-Z
DSC-9GR-W DSC-9GR-X DSC-9GR-Y DSC-9GR-Z
DSC-9GN-W DSC-9GN-X DSC-9GN-Y DSC-9GN-Z
DSC-9H1-W DSC-9H1-X DSC-9H1-Y DSC-9H1-Z
DSC-9H2-W DSC-9H2-X DSC-9H2-Y DSC-9H2-Z
DSC-9H3-W DSC-9H3-X DSC-9H3-Y DSC-9H3-Z
DSC-9H4-W DSC-9H4-X DSC-9H4-Y DSC-9H4-Z
DSC-9H5-W DSC-9H5-X DSC-9H5-Y DSC-9H5-Z
DSC-9H6-W DSC-9H6-X DSC-9H6-Y DSC-9H6-Z
DSC-9H7-W DSC-9H7-X DSC-9H7-Y DSC-9H7-Z
DSC-9H8-W DSC-9H8-X DSC-9H8-Y DSC-9H8-Z
DSC-9HR-W DSC-9HR-X DSC-9HR-Y DSC-9HR-Z
DSC-9HN-W DSC-9HN-X DSC-9HN-Y DSC-9HN-Z

FDC-2A1-W FDC-2A1-X FDC-2A1-Y FDC-2A1-Z
FDC-2A2-W FDC-2A2-X FDC-2A2-Y FDC-2A2-Z
FDC-2A3-W FDC-2A3-X FDC-2A3-Y FDC-2A3-Z
FDC-2A4-W FDC-2A4-X FDC-2A4-Y FDC-2A4-Z
FDC-2A5-W FDC-2A5-X FDC-2A5-Y FDC-2A5-Z
FDC-2A6-W FDC-2A6-X FDC-2A6-Y FDC-2A6-Z
FDC-2A7-W FDC-2A7-X FDC-2A7-Y FDC-2A7-Z
FDC-2A8-W FDC-2A8-X FDC-2A8-Y FDC-2A8-Z
FDC-2AR-W FDC-2AR-X FDC-2AR-Y FDC-2AR-Z
FDC-2AN-W FDC-2AN-X FDC-2AN-Y FDC-2AN-Z
FDC-2B1-W FDC-2B1-X FDC-2B1-Y FDC-2B1-Z
FDC-2B2-W FDC-2B2-X FDC-2B2-Y FDC-2B2-Z
FDC-2B3-W FDC-2B3-X FDC-2B3-Y FDC-2B3-Z
FDC-2B4-W FDC-2B4-X FDC-2B4-Y FDC-2B4-Z
FDC-2B5-W FDC-2B5-X FDC-2B5-Y FDC-2B5-Z
FDC-2B6-W FDC-2B6-X FDC-2B6-Y FDC-2B6-Z
FDC-2B7-W FDC-2B7-X FDC-2B7-Y FDC-2B7-Z
FDC-2B8-W FDC-2B8-X FDC-2B8-Y FDC-2B8-Z
FDC-2BR-W FDC-2BR-X FDC-2BR-Y FDC-2BR-Z
FDC-2BN-W FDC-2BN-X FDC-2BN-Y FDC-2BN-Z
FDC-2C1-W FDC-2C1-X FDC-2C1-Y FDC-2C1-Z

维修中需要注意一下几点拆卸、调整仪表时，应记录原来的位置，以便复原。在潮湿环境下检修无纸记录仪故障时，对印刷线路用万用表测其各点是否通畅很有必要，因为这种情况下的主要故障是铜箔腐蚀。用万用表欧姆挡时，切记不要带电测量。修理精密无纸记录仪时，如不慎将小零件弹飞，可采取磁铁扫描和视线扫描方法进行寻找。检测电源中的滤波电容时，应先将电解电容器的正负极短路一下，而且短路时不要用表笔线来代替导线对电容器进行放电，因为这样容易烧断芯线。可以取一只带灯头引线的220V，60～100W的灯，接于电容器的两端，在放电瞬间灯泡会闪光。检修无纸记录仪内部电路时，如果安装元件的接点和电路板上涂了绝缘清漆。
玉田县SANIL开关SKA-18MS-T,M18,2-8mm,Sheild,AC20-250V

FDC-2C2-W FDC-2C2-X FDC-2C2-Y FDC-2C2-Z
FDC-2C3-W FDC-2C3-X FDC-2C3-Y FDC-2C3-Z
FDC-2C4-W FDC-2C4-X FDC-2C4-Y FDC-2C4-Z
FDC-2C5-W FDC-2C5-X FDC-2C5-Y FDC-2C5-Z
FDC-2C6-W FDC-2C6-X FDC-2C6-Y FDC-2C6-Z
FDC-2C7-W FDC-2C7-X FDC-2C7-Y FDC-2C7-Z
FDC-2C8-W FDC-2C8-X FDC-2C8-Y FDC-2C8-Z
FDC-2CR-W FDC-2CR-X FDC-2CR-Y FDC-2CR-Z
FDC-2CN-W FDC-2CN-X FDC-2CN-Y FDC-2CN-Z
FDC-2D1-W FDC-2D1-X FDC-2D1-Y FDC-2D1-Z
FDC-2D2-W FDC-2D2-X FDC-2D2-Y FDC-2D2-Z
FDC-2D3-W FDC-2D3-X FDC-2D3-Y FDC-2D3-Z
FDC-2D4-W FDC-2D4-X FDC-2D4-Y FDC-2D4-Z
FDC-2D5-W FDC-2D5-X FDC-2D5-Y FDC-2D5-Z
FDC-2D6-W FDC-2D6-X FDC-2D6-Y FDC-2D6-Z
FDC-2D7-W FDC-2D7-X FDC-2D7-Y FDC-2D7-Z
FDC-2D8-W FDC-2D8-X FDC-2D8-Y FDC-2D8-Z
FDC-2DR-W FDC-2DR-X FDC-2DR-Y FDC-2DR-Z
FDC-2DN-W FDC-2DN-X FDC-2DN-Y FDC-2DN-Z
FDC-2E1-W FDC-2E1-X FDC-2E1-Y FDC-2E1-Z
FDC-2E2-W FDC-2E2-X FDC-2E2-Y FDC-2E2-Z
FDC-2E3-W FDC-2E3-X FDC-2E3-Y FDC-2E3-Z
FDC-2E4-W FDC-2E4-X FDC-2E4-Y FDC-2E4-Z
FDC-2E5-W FDC-2E5-X FDC-2E5-Y FDC-2E5-Z
FDC-2E6-W FDC-2E6-X FDC-2E6-Y FDC-2E6-Z
FDC-2E7-W FDC-2E7-X FDC-2E7-Y FDC-2E7-Z
FDC-2E8-W FDC-2E8-X FDC-2E8-Y FDC-2E8-Z
FDC-2ER-W FDC-2ER-X FDC-2ER-Y FDC-2ER-Z
FDC-2EN-W FDC-2EN-X FDC-2EN-Y FDC-2EN-Z

工作原理编辑开关电源的工作过程相当容易理解，在线性电源中，让功率晶体管工作在线性模式，与线性电源不同的是，PWM开关电源是让功率晶体管工作在导通和关断的状态，在这两种状态中，加在功率晶体管上的伏-安乘积是很小的（在导通时，电压低，电流大；关断时，电压高，电流小）/功率器件上的伏安乘积就是功率半导体器件上所产生的损耗。与线性电源相比，PWM开关电源更为有效的工作过程是通过“斩波”，即把输入的直流电压斩成幅值等于输入电压幅值的脉冲电压来实现的。开关电源伯特图开关电源伯特图脉冲的占空比由开关电源的控制器来调节。一旦输入电压被斩成交流方波，其幅值就可以通过变压器来升高或降低。通过增加变压器的二次绕组数就可以增加输出的电压值。
玉田县SANIL开关SKA-18MS-T,M18,2-8mm,Sheild,AC20-250V