Suzhou Gongyuan Automation Technology Co., Ltd. | Electrical Safety Monitoring for New Energy Systems
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Certified obtained from TUV

EN DC INSULATION MONTTOR

Gongyuan develops DC, AC, and high-voltage insulation monitoring solutions for EV charging, energy storage, photovoltaics, industrial distribution, and rail transit.

1000+
New energy enterprises served
TUV / CE
International product certification
DC / AC
Insulation monitoring portfolio
RS485
MODBUS RTU data communication

1000~4000Vd.c.

High-voltage DC monitoring with self-test, relay alarm, and MODBUS RTU.

Product Center

Insulation Monitoring Product Portfolio

Compare application range, key specifications, certifications, and inquiry access in one product-led structure.

GYIM-DAR DC Insulation Monitor Device
TÜV / CE Certified

GYIM-DAR DC Insulation Monitor Device

Real-time monitoring of positive and negative pole insulation resistance, unaffected by DC voltage fluctuation.

  • 100~1000Vd.c. DC floating system
  • 0kΩ~10MΩ resistance measurement
  • RS485 communication, MODBUS RTU protocol
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GYDCG-UBCW2K High Voltage Insulation Monitor
2000V System

GYDCG-UBCW2K High Voltage Insulation Monitor

Designed for DC charging systems, photovoltaic systems, energy storage systems, and DC grid applications.

  • 100~2000Vd.c. monitoring range
  • Insulation monitoring module self-test
  • Dry contact relay alarm output
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GYID Insulation Monitoring Device
AC / DC Applications

GYID Insulation Monitoring Device

Monitors DC floating systems, AC floating systems, passive equipment insulation status, and vehicle systems.

  • 0~1000Vd.c. DC and 0~750Va.c. AC
  • Measurement range up to 50MΩ
  • CAN bus communication interface
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GYDCG-MBC1500 Multi-Branch DC Insulation Monitor
TÜV / CE Certified

GYDCG-MBC1500 Multi-Branch DC Insulation Monitor

Simultaneous monitoring for multi-branch circuits in power distribution systems.

  • Up to 24 separate monitoring channels
  • RS485 / Modbus communication standard
  • LCD display for local interface
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GYDCG-UBCW4K 4000 Vdc Insulation Monitor
AC / DC Applications

GYDCG-UBCW4K 4000 Vdc Insulation Monitor

High-performance insulation monitoring designed for heavy industrial systems.

  • Extended voltage range up to 4000Vdc
  • Robust construction with sealing caps
  • Integrated fault data logging
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GYDCG-UBCH1 Multifunction DC Insulation Monitor
Multi-Function

GYDCG-UBCH1 Multifunction DC Insulation Monitor

Versatile and compact insulation monitoring with programmable settings.

  • Compact DIN-rail mount design
  • Programmable alarm thresholds
  • Dual output relays for alarm/trip
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GYID AC/DC Insulation Monitoring Device
AC / DC Applications

GYID AC/DC Insulation Monitoring Device

Monitors DC floating systems, AC floating systems, passive equipment insulation status, and vehicle systems.

  • 0~1000Vd.c. DC and 0~750Va.c. AC
  • Measurement range up to 50MΩ
  • CAN bus communication interface
Request a Quote →
DMG10600T070_A5WTR Supporting LCD Screen
Supporting Screen

DMG10600T070_A5WTR Supporting LCD Screen

Interactive high-resolution smart display terminal designed for real-time monitoring system parameters.

  • 7-inch HD touch screen display
  • Adjustable parameter settings
  • RS485 communication interface
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About Us

Focused on New Energy Electrical Safety

Suzhou Gongyuan Automation Technology Co., Ltd. develops, manufactures, and supports insulation monitoring systems for new energy electrical safety.

With independent R&D, advanced detection technology, and strict quality control, Gongyuan helps customers reduce electrical risk and improve system reliability.

2017
Founded in the insulation monitoring industry
56+
Patent and intellectual property achievements
100+
Product and solution capability
1000+
New energy enterprise customers served
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Why Choose Us

Service Advantages for Global Buyers

Product quality, application experience, and engineering support help buyers move from selection to deployment faster.

01

Quality Assurance

Certified products backed by strict manufacturing and quality management.

02

Application Experience

Coverage for charging, storage, PV, DC grid, rail transit, and special vehicles.

03

R&D Capability

Independent engineering for accurate monitoring and intelligent fault warning.

04

Fast Technical Support

Quick documents, model guidance, and project-fit confirmation.

Solutions & Application Areas

Monitoring for High-Risk Electrical Systems

EV Charging

DC insulation monitoring for charging piles and vehicle charging systems.

Energy Storage

Fault warning for storage cabinets and battery-side DC systems.

Photovoltaic Systems

High-voltage DC monitoring for solar generation and conversion.

Rail Transit & Industrial

Continuous monitoring for demanding DC or AC floating systems.

Application Cases

Field-Proven New Energy Applications

Application photos show real integration in charging equipment and electrical systems.

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Integrated insulation monitoring inside charging equipment cabinets.

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Supports safety warning in DC charging applications.

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Monitoring for high-reliability power and equipment systems.

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Application coverage for charging, storage, photovoltaic, and DC grids.

Certifications & Technical Documents

Compliance Materials for Procurement

Clear proof for safety review, quality checks, and market-entry evaluation.

Compliance Snapshot

Verified documents for faster buyer approval.

TÜV, CE, RoHS, REACH, quality system, and patent materials support engineering and procurement review.

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TUV

Product safety validation

CE

EU market conformity

RoHS

Restricted substance control

REACH

SVHC report available

Certificate PDF

TUV Certificate

Test Report PDF

CE Report

Compliance PDF

REACH SVHC Report

Online Inquiry / Technical Support

Send Your Voltage Range and Application

Get model recommendations, technical parameters, certification files, and integration support.

News & Information

Technical Articles and Insights

Guides for insulation monitoring principles, safety value, product selection, and maintenance.

Improving Electrical Reliability with DC Insulation Detection

DC insulation detection supports uptime, preventive maintenance, and safer operation in PV, storage, and DC grid projects.

EV Insulation Monitoring for Safer Charging Systems

EV charging equipment depends on stable insulation monitoring to protect users, vehicles, and charging infrastructure.

Advantages of DC Insulation Monitoring Instruments in Industrial Applications

Industrial DC systems benefit from real-time resistance monitoring, fast alarm output, and communication-ready fault diagnosis.

Understanding the Importance of Insulation Monitoring in Electrical Systems

Insulation monitoring helps teams detect degradation before it becomes a safety risk, especially in floating DC and new energy systems.