GYIM-DAR TUV-CE Certified DC Insulation Monitor for 100~1000VDC Systems

Description

The GYIM-DAR TUV-CE certified DC insulation monitor monitors the insulation resistance between the positive and negative poles and ground in 100~1000VDC floating DC systems. It measures 0KΩ~10MΩ, supports RS485 communication with MODBUS RTU protocol, and adds a resistance threshold alarm, voltage-to-ground monitoring and PE wire disconnection detection. It is used in EV DC charging systems, photovoltaic systems, energy storage systems and DC power grids.

Product description

GYIM-DAR DC Insulation Monitor features insulation monitoring start/stop control. When insulation monitoring is enabled, it can monitor the insulation resistance between the positive and negative poles and ground in real time. The monitoring results are not affected by DC voltage fluctuations or the symmetry of positive and negative insulation resistance.

• Monitors insulation resistance between positive and negative poles and ground in 100~1000VDC floating DC systems.
• Resistance measurement range: 0KΩ~10MΩ.
• DC voltage detection range: 0~1000VDC.
• Supports RS485 communication with MODBUS RTU protocol.
• DC voltage reverse connection alarm function.
• Supports two operating modes: automatic switching bridge mode (unbalanced bridge method for monitoring insulation resistance to ground) and fixed bridge mode (balanced bridge method for monitoring voltage to ground).
• Built-in self-test function of the insulation monitoring module.
• Suitable for DC systems such as electric vehicle DC charging systems, photovoltaic systems, energy storage systems, and DC power grids.

Additional Performance Highlights

• Dual-voltage compatibility: Compatible with 12VDC or 24VDC power supplies.
• Fast monitoring: Adaptive to ground capacitance, with a measurement cycle of 0.7 to 2 seconds.
• High accuracy: Monitoring accuracy can reach within 1% under small ground-capacitance conditions.
• Additional protection: Includes resistance-threshold alarms and PE-line disconnection detection.

What makes the GYIM-DAR different from the UBCS1 and UB series?

The GYIM-DAR is the series that carries the TUV-CE certification label on this website, and it adds protections the UBCS1 series does not list: resistance threshold alarms and PE wire disconnection detection. It also states a measurement cycle of 0.7 to 2 seconds and an accuracy within 1% under small ground-capacitance conditions. If a certified insulation monitor is a project requirement, this is the model to review first, together with the documents on our Certifications page.

Other models by system voltage

• 10~60VDC systems: GYIM-DAR-60 low-voltage DC insulation monitor.
• Cost-focused 100~1000VDC option with a DIN rail design: GYDCG-UBCS1.
• AC and DC systems: GYID insulation monitor.

Frequently asked questions

What DC voltage range does the GYIM-DAR monitor?

Insulation monitoring in 100~1000VDC floating DC systems, with DC voltage detection from 0 to 1000VDC.

How fast is the measurement?

The measurement cycle is 0.7 to 2 seconds, adapting to the ground capacitance of the system.

How accurate is it?

Monitoring accuracy can reach within 1% under small ground-capacitance conditions.

Does it detect a disconnected PE line?

Yes, it includes PE-line disconnection detection and resistance-threshold alarms.

Related guide

• How does an insulation monitoring device work?

Technical support and certificates

Gongyuan (Suzhou Gongyuan Automation Technology Co., Ltd.) has focused on insulation monitoring since 2017 and operates a quality management system built to the ISO 9001:2015 standard. Ask our engineers for the certificate documents that apply to your order through our contact page. Specifications on this page come from Gongyuan’s product documentation; please confirm the final model and options with our engineers before ordering.