Technical parameters of Liaoning Jinzhou insulation monitoring device

Three applications for grounding detection in oil drilling rig electrical control systems
The positive insulation monitor is developed by our company for the characteristics of large distributed capacitance, high grid voltage, and complex grid in mining, metallurgy and other power grids. Compared with the early insulation monitors, it is a new addition It has an independent alarm point, reaches an independent insulation resistance setting value and can alarm output. It has remote test reset function and analog output function. It completely replaces the advanced European and American imported models and can be used in AC and DC power grids.
The application of drilling rig electrical control system is for fault ground detection system, which is used to detect AC ground faults. A ground fault test button is required (mainly used to determine whether the indicator light is burned out when the ground fault indicator light is on). A grounding indication is also required. For this purpose, we designed and selected the second-generation insulation monitor model launched by Dongguan Qianbo Electronic Technology Co., Ltd. Equipped with insulation resistance meter, indicator light and detection button. The insulation detector module and insulation resistance meter selected in the design are installed and connected as shown in Figures 1 and 2.
Positivebr/ Picture 1: The insulation detector is flexible and convenient for rail installation
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Positivebr/ Picture 2 is equipped with an insulation resistance meter, fault indicator light and test button
Positive system After the wiring is correct, conduct pre-debugging and power-on inspections. After the installation and wiring are correct, start power-on debugging. After the main circuit breaker of the incoming line is closed, measure the line voltage and close the power control circuit breaker of the insulation detector. The power light of the insulation detector turns on. Measure the terminal voltage of the insulation detector. At this time, the ground fault light is off. After setting the insulation resistance value and manually pressing the monitoring button, the insulation detector fault light is on, the alarm sounds, the cabinet door ground fault indicator light is on, and the insulation resistance meter displays the resistance value. After reset, the fault light goes out and the running light of the insulation detector indicates normal. The circuit returns to normal duty mode. During the application process, the parameter setting is simple, the dial setting is flexible, and the detection is sensitive. In order to prevent false alarms, it is recommended to set the insulation resistance value appropriately.
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Positive insulation monitor, in many occasions in ungrounded systems, it is necessary to monitor the insulation resistance value of the power grid to the ground. When the insulation resistance value of the power grid to the ground drops to a certain level, an alarm is required to take intervention measures. Insulation The monitor is designed in response to this demand. The insulation monitor has experienced generations of development. The current insulation monitor can be used in any occasion in China. The product has strong versatility and is simple and convenient to install. It is a domestic model that can replace the imported similar insulation monitor. .
Positive insulation monitor is used to monitor the insulation resistance to ground in AC and DC ungrounded systems. When the grid ground insulation resistance is lower than the set value, the insulation monitor relay alarm outputs. This insulation monitor can be equipped with an optional display instrument to indicate the current system insulation resistance value. This insulation monitor has the advantages of high reliability, good interchangeability, high measurement accuracy and easy installation and use. It is widely used in ships, mines and other fields. The insulation monitor can not only monitor the real-time insulation resistance of the system online, but also monitor the static insulation resistance of the system (when the system is powered off).
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