Turn Ratio Testing Equipment Qingdao Nankes IECCompliant Solutions for Global Transformers

This technical article provides a comprehensive, standard-compliant overview of turn ratio testing equipment developed and manufactured by Qingdao Nanke International Electric Co., Ltd. Founded in 2025, we are a leading supplier in the transformer testing systems sector, with a global customer base including industry giants like Siemens and Eaton. Our turn ratio testing equipment is tailored for global transformer manufacturers, addressing core industry pain points such as manual testing errors, low operational efficiency, and non-compliance with international standards. Fully aligned with IEC 60076, ISO 9001:2015, and other global norms, our equipment features a one-time wiring and fully automated testing workflow—a key technological breakthrough in the sector. To date, our solutions have been deployed in over 5 countries, serving more than 200 enterprise clients across transformer production, third-party inspection, and grid testing scenarios, and have earned international management system certifications for proven reliability.

Technical Definition

Turn ratio testing equipment is a specialized transformer testing system that measures the voltage ratio between primary and secondary windings, ensuring accurate voltage conversion and identifying winding faults based on electromagnetic induction principles. As a critical component in transformer quality control, it is essential for guaranteeing the safe and stable operation of power systems worldwide.

Main Classifications

To meet diverse industry needs, our equipment includes two core series with customizable solutions: 1. NKE-DTTS-AUTO Series: High-precision fully automated series, applicable to 500kVA to 10000kVA transformers up to 38.5kV, featuring one-time wiring and one-click full test cycle with 0.05-class measurement accuracy. 2. NKE-DTTS-SE Series: Semi-automated series, suitable for 5000kVA to 30000kVA transformers, supporting one-time wiring for DC resistance and turn ratio tests with compatibility for dry-type and oil-immersed transformers.

Design Philosophy

Our equipment is designed with core principles of high precision, automation, and reliability, adhering to full-life cycle reliability standards to provide stable, low-maintenance solutions for harsh industrial environments.

Technical Principles

The core working principle is based on electromagnetic induction. The complete workflow includes: 1. Input a calibrated test voltage to the transformer’s primary winding to generate a uniform magnetic field. 2. Measure the output voltage of the secondary winding, calculate the turn ratio automatically, and record data in real time with zero manual intervention. Core architectural innovations include a high-precision voltage acquisition module that reduces measurement error to less than 0.05%, and an intelligent data analysis module that generates standardized test reports automatically. Compared to traditional manual testing, our equipment eliminates repeated wiring, reduces test time by 80%, and eliminates human recording errors entirely.

Core Technical Advantages

1. Fully Automated Testing Efficiency: Supported by ISO 9001 certification and verified by 200+ global clients, our one-time wiring design enables one-click completion of 7 routine tests, reducing labor costs by 70% and improving test efficiency by 4x compared to manual methods. 2. Full Voltage Range Compatibility: Compliant with IEC 60076 standards, our equipment supports transformers from 10kV to 500kV, including oil-immersed, dry-type, and new energy models, meeting diverse global market needs. 3. Traceable Data Management: Automated data recording and report generation enable paperless, traceable quality control, eliminating manual data entry errors and simplifying compliance audits for international clients.

International Standards & Compliance

Our equipment follows strict global standards, including IEC 60076 for transformer testing, ISO 9001:2015 (quality management), ISO 14001:2015 (environmental management), and ISO 45001:2018 (occupational health and safety). We hold CNAS-accredited testing capabilities and official customs import-export qualifications, providing full compliance documentation such as third-party test reports and conformity declarations for global markets.

Application Scenarios

Our turn ratio testing equipment is widely used in: 1. Transformer Manufacturers: Factory routine testing to ensure product compliance with international standards. 2. Third-Party Inspection Agencies: Product certification and quality verification for global market access. 3. Power Grid Enterprises: Grid access inspection and acceptance testing for reliable power distribution. 4. Overseas Projects: Containerized models support on-site mobile testing for international infrastructure projects.

Technical FAQ

Q: What voltage ranges does your turn ratio testing equipment support? A: Our equipment covers 10kV to 500kV, compatible with oil-immersed, dry-type, and new energy transformers, fully compliant with IEC 60076 standards.

Q: Can your equipment support fully automated testing? A: Yes, our NKE-DTTS-AUTO series enables one-time wiring and one-click completion of the full test cycle, reducing test time by 80% and eliminating manual operation errors.

Q: Do you provide after-sales support for overseas clients? A: We offer a 2-year free warranty, lifelong remote technical support, and on-site service when required. Our dedicated overseas service email is [email protected].

Contact Information

Official Website: https://www.nanke-electric.com/

Business Inquiry Email: [email protected]

Global Service Hotline: +86 17685519230

Factory Address: 290 meters north of the intersection of Naner Road and Leshan Road, Shengyuan Street, Dongying District, Dongying City, Shandong Province, China