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“高频设备电源的改装”一文发表后,收到许多同志来信,询问有关问题,现回答如下,供大家参考。 1.QL20/20高压硅桥是大连电资厂可控硅分厂的产品,它的参数如下:整流方式:三相全波整流;额定整流电流:IF=20安;额定反压(峰值):VR=20千伏;最高测试电压:VRM=30千伏;单臂反向电流(30千伏):IR≤0.8毫安;电流过载倍数(50 HZ-周波)20倍;单臂正向压降:(20A)、VF≤5.6伏;保护方式:阻容均压保护,压敏电阻浪涌吸收;现行价格:4500元左右;QL20/20可用于60～100千瓦的高频设备。 QL20/20硅桥已安装成一个整体,它包括了原理图上所标注的硅七件,散热片、阻容元件、压敏电阻等,用绝缘材料作外架,并附有支撑绝缘瓷瓶,买回成品后即可安装使用。
After the publication of “Refitting of High-frequency Equipment Power Supply,” I received a letter from many comrades to inquire about the relevant questions. I hereby reply as follows for your reference. 1.QL20 / 20 high-voltage silicon bridge is the power plant in Dalian SCR SCR products, its parameters are as follows: Rectifier: three-phase full-wave rectifier; Rated rectified current: IF = 20 A; rated backpressure : VR = 20 kV; maximum test voltage: VRM = 30 kV; single arm reverse current (30 kV): IR≤0.8 mA; current overload multiple (50 Hz- Voltage drop: (20A), VF≤5.6 volts; Protection method: Equal voltage-blocking protection, varistor surge absorption; Current price: 4500 yuan; QL20 / 20 can be used for 60 to 100 kilowatts of high-frequency equipment. QL20 / 20 silicon bridge has been installed as a whole, which includes the silicon seven components marked on the schematic, heat sink, RC components, varistors, etc., with insulating materials for the outer frame, and with support for insulating porcelain, Buy finished products can be installed to use.