JPK型真空继电器  TYPE JPK VACUUM RELAYS  JPK型继电器采用真空介质，陶瓷外壳，具有耐压高，体积小，开断速度快，性能稳定可靠等优点，广泛用于雷达，电源，广播，无线电通讯和电子设备的控制电路中。  With vacuum dielectric and ceramic envelope , type JPK relays offer a number of advantages , such as high withstand voltage, small in size, high speed switching, stable and reliable properties, etc. They may widely be used for controlling and protection circuits in radar, power source , broad casting , radio communication and electronic equipment.触点参数    Contact Parameter规格号Specification No.JPK-21/028触点组合形式Contact Configuration1Z试验电压（直流或50Hz交流峰值）Test Voltage（DC or AC 50Hz Peak）kV17额定工作电压(峰值)Rated Operating Voltage(Peak)kVDC or AC 50Hz15AC2.5MHz-AC16MHz-AC32MHz-额定承载电流(有效值)Continuous Current,Carry( RMS)ADC or AC 50Hz30AC2.5MHz-AC16MHz-AC32MHz-接触电阻Contact Resistance（Ω）0.025分布电容Contact Capacitance（pf）断开的触点间Beteween Open Contacts0.5触点与外壳间Open Contacts to Ground1机械寿命Expected Mechanical Life(×104)1标称重量   Weight (g)85   线圈数据      Coil Parameter◎标称电压   Rated Voltage DC(V)12◎最大吸合电压   Pull-in Voltage Max. DC(V)8◎最小释放电压   Dropout Voltage. Min.DC(V)0.5~5◎线圈电阻   Coil Resistance (Ω±10%)48    环境适应性能     Ambient Adaptability◎温度范围℃Range of Temp.℃-55~125◎冲击（11ms ,半正弦波）Shock,(11ms,1/2 Sine)m/s2(g)50◎高频振动HF Vibration  m/s2(g),HZ55-5500◎安装方式Mounting Form法兰