技术参数Technical parameters
测量中性点不接地（IT）系统。Measuring neutral No grounding(IT) systems.
监测500V以下交流电网的绝缘电阻。
Monitoring the insulation at the AC network system below 500V.
当电网绝缘电阻低于设定值时输出一报警信号。
To output alarm signal will generate if the resistance lows then the set value.
输出指示精度 Accuracy of indication：⑩.
报警精度Accuracy of alarm:10KΩ±3KΩ；30KΩ±3KΩ；60KΩ±6KΩ；100KΩ±10KΩ；200KΩ±20KΩ；500KΩ±50KΩ；1000KΩ±100KΩ；
环境温度 Ambient temperature range：0℃ to +55℃。
外壳防护Housing protection：IP20。
耐电压 Dielectric test：AC2.6KV，50HZ，1min。
输出触点容量 Contact rating：AC250V，3A；DC28V，3A。
电源功耗 Power consumption：≤10VA。
工作电源Aux.power：AC220V±20%。50/60HZ
使用说明书Directions for use
仪器正确连接后，接通电源到额定电压，工作指示灯亮，仪器即处于监测状态；当绝缘电阻值低于设定值时发出一报警信号。After the instrument is connected correctly, the power supply is connected to the rated voltage, and the work indicator light is on, the instrument is in the monitoring state; An alarm signal is sent when the insulation resistance value falls below the set value.
如需判别仪器工作是否正常时可进行自检，此时报警红灯点亮，报警输出端发生变化，常闭端转换成常开，常开端转换成常闭；自检完毕后必须将仪器恢复到正常测量档位上。If it is necessary to determine whether the instrument works normally, self-check can be carried out. At this time, the alarm red light is lit, the alarm output end changes, the normally closed end is converted to normally open, and the normally open beginning is converted to normally closed. The instrument must be returned to the normal measuring gear after self - check.
接岸电时，由于岸电系统为接地系统，仪器会发出误报警，此时可将开关调整到“岸电”档；但输出常开、常闭触点不会发生转换动作，无报警输出。When answering shore power, due to shore power system for the grounding system, instruments have a false alarm, the switch can be adjusted to "shore power"; But the output normally open and normally closed contacts will not have conversion action, no alarm output.
外接指示表头输出信号为0-1mA电流信号，用于驱动外接指示仪表；而该输出电流信号与绝缘监测仪相对应关系，显示仪表标牌显示∞-0.2-0MΩ（0-1mA）。The output signal of the external indicator head is 0-1mA current signal, which is used to drive the external indicator meter; The output current signal is corresponding to the insulation monitor, and the display instrument label shows ∞-0.2-0MΩ (0-1mA).
仪器可用在各种船舶配电板、矿井、医疗、空调、充电桩、电站等各种IT配电电网系统上面使用。The instrument can be used in all kinds of SHIP switchboard, mine, medical treatment, air conditioning, charging pile, power station and other IT power distribution system.
