Insulation Monitor
– Preventive maintenance through early fault detection of insulation faults
– A wide range of insulation monitors for AC and DC networks
– Improve safety and asset lifespan using our IMD

– Preventive maintenance through early fault detection of insulation faults
– A wide range of insulation monitors for AC and DC networks
– Improve safety and asset lifespan using our IMD
An insulation monitor, also called an Insulation Monitoring Device (IMD), is designed to monitor equipment insulation resistance to the ground in AC systems, DC Systems, AC and DC systems. Please read our guide on what is insulation monitoring device. Meeting IEC and CE standards ensures our DC Insulation monitoring systems are the best electrical safety solutions for insulation fault detection.
The DC insulation monitoring device IMD comes in various styles including options with LCD-display, or without LCD-display, single channel, or dual channel, and options that can be panel-mounted or din-rail mounted. With sizes, and model options in a variety of applications, it is easy to find the perfect DC insulation monitor solution.
As an insulation monitoring manufacturer with over a decade of experience, Blue Jay is committed to providing highly accurate and reliable IMD solutions. Our products monitor the insulation status of power systems in real time, proactively preventing ground faults and ensuring continuous equipment operation and personnel safety, helping you meet stringent industry standards.
Offering IMDs for all key industries, such as Mechanical & Plant Engineering, Public power supply network, railway, mining, BESS, Renewable energy, mobile power generation, etc.
Improved fire protection: detects developing insulation faults to prevent fires, explosions, and other critical failures, ensuring maximum safety for your system and personnel.
Blue Jay's OEM & ODM services enable the implementation of customized safety solutions, safeguarding your investment.
Depending on its application, it’s critical to match the features your application requires to a high-quality DC insulation resistance monitoring device that fulfills them.
For example, an insulation monitoring device for electric vehicles is typically a must-have if you need to monitor insulation resistance for electric vehicles. For electrical vehicle insulation monitoring, our JY1000-EV series insulation monitor is the ideal choice for 0-1000VDC IT systems in electric vehicles.
Moreover, DC insulation monitoring is common in EV charging station applications. As for EV charger insulation monitoring, the JY1000-AL, JY2000-AL, JY1000-ST, and JY series insulation monitoring relay is best for you. Please read our guide on insulation monitoring for DC charging stations.
If you need to monitor insulation resistance in the DC circuit bus bar, the ZJJ series line insulation monitor is typically a must-have. If you need to monitor insulation faults in the DC system, the ZJS series ground fault monitoring relay is a must-have.
Depending on its communication port, your facility might need CAN-bus protocol, RS-485-Mobus protocol, or other dedicated protocols. Our insulation monitors support the above protocol for finding an insulation monitoring device with the right protocol. To know more about CAN communication vs RS485 communication, Check out our guide to CAN Communication For DC Insulation Monitoring Devices.
Withstand voltage, Rated voltage, and timing adjustable are also major factors for DC insulation monitors used in some applications.
Blue Jay offers various DC insulation monitoring devices in styles, channels, and functions for different applications, such as IT systems, and DC power systems. From single channel to dual channels, we provide multifunction insulation monitoring relays too. Besides, our selection also includes options such as high-voltage DC insulation monitoring.
Browse all of our DC Insulation monitoring devices here and find the insulation monitoring relay that’s just right for your application. Need customized logos or functions on your insulation monitor? Get started with an instant quote now to get your insulation monitor customization.
Let’s know your needs. Blue Jay will get in touch with you ASAP.