1. Insulation monitoring device application of electric operating power supply
Electric operation power supply is the main scenario for applying insulation monitors in DC power systems. It is mainly used in power grid substations and power plants. In recent years, it has also been widely used in more and more user substations. In the power system, there is generally a relatively long distance from the DC power supply system to the load equipment. In addition to most of the DC output lines being routed indoors, some are also routed outdoors. Especially in power plant applications, the loads are numerous and miscellaneous, so The insulation monitoring of the line is very important. Generally, the electric power supply system needs to be equipped with insulation monitoring equipment to improve the safety of the power station system. In some small user substations, because there are relatively few power supply output branches, generally only the insulation monitoring of the busbar is performed.

2. Insulation monitoring device application of high-voltage DC power supply in data center.
In recent years, with the explosive growth of data center construction, some new data centers use HVDC DC power supply system as the power supply system for servers. In order to ensure the safe operation and maintenance of data centers, most data centers are also equipped with insulation monitoring devices for DC buses. In data center applications, there are many output branches, all of which run indoors. At the same time, due to the large area of the data center and the large number of DC power supply systems, the server power supply is relatively independent, and the mutual influence is relatively small. At that time, for some cases where there were DC busbars connected in parallel, such as two sets of DC power supplies running in parallel, it was not suitable to adopt the method of multi-insulation host or AC small signal branch circuit detection, because when the busbars were connected in parallel, the mutual interference of the busbar monitoring might cause the small signal Interference with each other makes it impossible to monitor the insulation normally, and even false alarms occur frequently.

3. Other applications of Insulation monitoring device

In the mobile communication network, in order to cope with the harsh power supply environment in remote areas, the remote power supply technology of high-voltage DC power supply will be used to supply power to the remote RRU or repeater. Since the cables and optical fibers are routed together in the field, in order to protect personal safety in general, insulation monitoring is also provided for high-voltage DC equipment. In this type of scenario, it is basically only necessary to perform insulation monitoring on the DC bus of the residence.