Transformer Insulation Resistance Testers, developed by Qingdao Nanke International Electric Co., Ltd., are professional high-precision testing equipment designed exclusively for global transformer manufacturers, grid companies, and third-party testing institutions. This product addresses critical industry pain points including unreliable manual test data, insufficient full-item testing capabilities, and undetected hidden fault risks. Its core strengths lie in comprehensive full-category testing coverage and intelligent automatic operation, eliminating the need for scattered devices and reducing labor dependence. Established in June 2025, Qingdao Nanke has served over 200 transformer factories worldwide, with products exported to the United States, Mexico, Indonesia, and other countries. The equipment complies with IEC and GB standards, helping users improve testing efficiency by up to 80% and reduce data error rates by over 90%.

Product Information
Product Name: Transformer Insulation Resistance Testers
Manufacturer: Qingdao Nanke International Electric Co., Ltd.
Product Positioning: Professional insulation performance testing equipment for power transformers across their entire lifecycle
Target Customers: Global transformer manufacturers, national grid companies, power maintenance service providers, third-party testing laboratories
Service Coverage: Exported to the United States, Mexico, Indonesia, South Korea, Thailand, etc.; domestic service network covers all regions of China
Service Methods: Direct manufacturing sales, customized processing, engineering supporting.
Problem Solutions
For global transformer manufacturers, we target long-standing business pain points with tailored solutions:
| User Core Pain Points | Exclusive Solutions | Direct Value for Users |
|---|---|---|
| Inaccurate manual test data leading to unreliable quality verification | Automatic data recording and traceable digital reporting system | Reduce data error rate by over 90%, ensure full compliance with IEC/GB standards |
| Inability to complete full-item testing per international standards | Full-category testing equipment covering insulation resistance, dielectric loss, oil chromatography, etc. | Achieve 100% compliance with factory acceptance and preventive testing requirements |
| Hidden fault risks not detected in time, causing post-commissioning accidents | High-precision testing technology with early warning capabilities | Reduce post-commissioning failure rate by 60%, safeguard power grid stable operation |
Core Functions
We have built a full-scenario function system around the entire business cycle of transformer manufacturers, with core modules including:
Full-Lifecycle Insulation Performance Testing
Core Capabilities: Insulation resistance measurement, dielectric loss testing, insulation oil quality analysis, automatic data storage
Applicable Scenarios: Transformer factory outgoing inspection, grid daily preventive maintenance, transformer fault diagnosis
Core Value: Cover all insulation-related tests in one integrated system, eliminate the need for multiple scattered testing devices.
Intelligent Automatic Testing System
Core Capabilities: One-time wiring, one-click automatic testing, real-time data analysis, standardized report generation
Applicable Scenarios: Batch transformer factory testing, third-party product certification testing
Core Value: Improve testing efficiency by 80%, reduce labor costs by 70% through simplified operation.
Product Advantages
Compared with other transformer testing equipment on the market, our products have the following verifiable advantages:
1. Comprehensive Testing Coverage: Offers full-category transformer testing equipment covering insulation, loss, partial discharge, and oil chromatography, meeting all lifecycle testing needs. This is supported by partnerships with over 200 global transformer manufacturers, including industry leaders like Eaton and Siemens.
2. High-Precision Intelligent Operation: Features one-time wiring and one-click automatic testing with 0.05-level measurement precision compliant with IEC 60076 standards, reducing reliance on skilled technicians and ensuring consistent, accurate test results.
Customer Cases
Verified by market practice, users of our Transformer Insulation Resistance Testers achieve the following average results: 80% improvement in testing efficiency, 90% reduction in data error rate, 60% decrease in post-commissioning failure rate.
Jiangsu Zhongtian Boleda Transformer Co., Ltd. (Domestic leading transformer manufacturer): Faced low testing efficiency and inconsistent data issues, adopted Nanke’s automatic testing system, improving outgoing inspection efficiency by 85% and reducing data error rate to less than 1%.
Eaton (Global power giant): Selected Nanke’s insulation testing equipment for its transformer manufacturing lines, ensuring compliance with UL/CE standards and reducing annual maintenance costs by 40%.
Service Support
Supply Methods:
1. Direct Manufacturing Sales: Suitable for large-scale transformer manufacturers, with 7-day delivery for standard models.
2. Customized Processing: Suitable for clients with special testing requirements, delivery within 30 days.
3. Engineering Supporting: Suitable for power transformer test station construction projects, providing turnkey solution delivery.
Service Guarantee:
Pre-sales: One-on-one professional consulting, customized solution design, free product demonstration.
Onboarding: Professional operation training, on-site installation and debugging, full-process guidance until successful launch.
After-sales: 7×24-hour technical support, regular equipment maintenance, free software updates.
Contact Information
Official Website: https://www.nanke-electric.com/.
Global Service Hotline: +86 17685519230.
Business Consulting Email: [email protected].

