FAQ

The company has a factory floor area of 20,000 m² and a strong technical team, including 45 mechanical design engineers, 22 software design engineers, and 118 installation and debugging engineers.

Nanke Electric is China's pioneering manufacturer of intelligent test systems for transformers, with a domestic market share of over 95%. As of 2025, Nanke Electric has delivered over 500 intelligent test systems to more than 200 transformer manufacturers worldwide.
Every year, over 10 million transformers are tested and shipped to the market through Nanke Electric's test systems.
Representative clients include globally renowned companies such as EATON (USA), Siemens (Indonesia), SANIL (South Korea), China XD Group, Pinggao Group, TBEA, and JST Power.

Nanke Electric has obtained the following international and domestic certifications and qualifications:
I. Three Major International Management System Certifications (All Valid)
1.ISO 9001:2015 (Quality Management System)
2.ISO 14001:2015 (Environmental Management System)
3.ISO 45001:2018 (Occupational Health and Safety Management System)
All three certifications were issued by CNAS-accredited certification bodies and bear the CNAS and IAF international mutual recognition marks.
II. Other Internationally Recognized Qualifications
1.Customs Import and Export Registration (Qualified for international goods import and export)
2.Products and testing capabilities comply with IEC 60076 and other international power industry standards (applicable to the export of transformer test systems)
III. Domestic Authoritative Certifications (Supporting International Markets)
1.National High-tech Enterprise
2.Provincial "SRDI" (Specialized, Refined, Differentiated, Innovative) Enterprise

Our intelligent transformer testing systems are widely adaptable to various transformer types, primarily including:
Oil-immersed distribution transformers
Dry-type transformers
Renewable energy transformers
Ground-mounted transformers
Pole-mounted transformers
For transformers of different specifications, we will customize a tailored transformer testing solution based on your specific product models during the pre-sales stage.

Nanke Electric's transformer test systems can perform the following test items:
Routine test items:
Winding DC Resistance Test
No-load Loss
Insulation Resistance Test
Turns Ratio Test
Load Loss
Induced Voltage Test
Applied Voltage Test
Optional test items:
Partial Discharge Test
Temperature Rise Test
Lightning Impulse Test

Nanke Electric's test systems cover the following application scenarios:
Routine factory testing, batch sampling inspection, and final inspection of finished products for transformer manufacturers
Supporting testing for power distribution equipment manufacturers
Type testing and R&D testing in enterprise internal laboratories
Outsourced testing and quality dispute re-testing for third-party testing agencies

Yes. We provide customized, integrated testing system solutions based on customers' specific needs. From the pre-sale consultation stage, we analyze customer requirements and recommend the optimal testing solution to ensure maximum cost-effectiveness and a perfect fit for operational goals.

In 2014, Nanke Electric pioneered the development and launch of the transformer production line test system, achieving the breakthrough solution of "one-time wiring, fully automated testing."
Core advantages include:
Fully automated testing process: Through modular hardware integration and proprietary automated control algorithms, all routine factory tests – including DC resistance, turns ratio, insulation resistance, no-load loss, load loss, induced voltage, and applied voltage tests – are seamlessly integrated into a closed-loop process defined by "one-time wiring, one-button start, and automatic completion."
High testing efficiency: In a typical configuration using 4 integrated test cabinets and 2 operators, 136 transformers can be fully tested within 8 hours – achieving over three times the efficiency of traditional manual wiring methods. Data is collected automatically and standard reports are generated with zero manual entry errors.

Core Technical Advantages of Nanke Electric vs. Traditional Testing
I. Core Operating Mode: From "Repeated Wiring" to "One-Time Wiring, Fully Automated"
1.Nanke Electric Test System: Requires only 1 wiring connection. With one click, 7 routine tests are automatically completed, with full automation of control, testing, and report generation.
2.Traditional Testing: Each test item requires manual changing of test clamps, requiring at least 10 wiring connections. The entire process relies on manual operation, manual judgment, and manual recording — a cumbersome process with low efficiency.
II. Efficiency and Labor: Quantifiable Cost Reduction and Efficiency Improvement
1.Testing Efficiency: The delivery test cycle is significantly shortened compared to traditional methods, adapting to batch production pace.
2.Labor Cost: Only 1-2 test operators are required to complete the entire process, reducing dependence on operator experience.
III. Ease of Operation: Quick Onboarding for New Operators
1.Nanke Electric Test System: The system is extremely easy to operate. New employees can independently complete the full factory test process for transformers after just 1-2 days of training.
2.Traditional Testing: Requires highly experienced test operators, with years of practice needed to master multi-item wiring and data judgment skills.
IV. Safety and Data Management: Lower Risk, Easier Traceability
1.Safety Assurance: One-time wiring significantly reduces repeated wiring operations, substantially lowering the risk of electric shock and enhancing test process safety.
2.Data Management: Automated recording and export of standardized test reports with full data traceability. Traditional methods rely on manual recording, which is error-prone and difficult to trace, resulting in extremely low data management efficiency.

Nanke Electric's intelligent test system is equipped with independently developed intelligent testing software with the following functions:
Core software functions:
Remote operation is achieved through host computer software, which communicates with instruments via LAN to exchange commands and data.
A simulation diagram of the primary system is displayed at the top of the system interface, allowing real-time tracking of voltage and current trends during testing.
Supports parameter settings, switch status monitoring, system status monitoring, sample information management, protection information recording, and report generation.
System hardware composition:
Uses an industrial control computer (IPC) as the host and a PLC as the slave.
Integrates a human-machine interface (HMI), control center, precision measurement modules, parameter acquisition, power supply processing, communication modules, relay output, frequency converter speed control, digital-to-analog conversion, and a protection system – forming an automatic remote control console.
Safety and intelligent design:
Ensures separation of strong and weak current circuits between the control console and primary testing equipment, protecting testing personnel safety.
Dual protection through software interlocks and hardware protection to prevent human operational errors.

Nanke Electric's transformer test equipment features comprehensive data management capabilities, supporting data export, local storage, paperless recording, and historical traceability, with customized test report format development available. The equipment also features open data interfaces that support integration with factory production management systems such as MES, enabling automatic test data upload, multi-device data integration, and closed-loop traceability. The system also supports test standard configuration and automatic result determination, meeting customers' needs for production management, quality traceability, and automated integration.

Nanke Electric provides a 2-year free warranty for overseas equipment and a 3-year free warranty for Main Transformer testing systems (PTTS-MD-AUTO).

After the transformer test equipment arrives, we will arrange for professional engineers to go to the customer's site to complete installation, wiring and commissioning, and system integration, ensuring the equipment is put into operation smoothly. At the same time, we provide on-site training for the customer's operation and maintenance personnel, covering equipment operation, routine maintenance, and basic troubleshooting, ensuring that the customer's personnel can operate the equipment independently and proficiently.

Nanke Electric's transformer test equipment features a stable structure and uses standardized general-purpose components, resulting in low overall maintenance costs. The company maintains a long-term stock of various original spare parts and core components, with stable supply channels and timely delivery, complemented by ongoing remote technical support and after-sales service, comprehensively ensuring the long-term stable operation of customer equipment.

Nanke Electric provides end-to-end services covering design, manufacturing, logistics, on-site commissioning, and after-sales operation and maintenance:
• Design & Customization: One-on-one support from our dedicated technical team, including customized solution design, parameter matching, technical consultation, and drawing confirmation.
• Manufacturing & Quality Control: Full-process project follow-up after contract signing, with strict production scheduling and end-to-end quality control to ensure products meet factory standards.
• Logistics & Delivery: Export packaging, booking, export customs clearance, and assistance with destination clearance and international logistics to ensure safe and efficient delivery to your designated location.
• Installation & Training: After the equipment arrives at your site, we provide on-site installation guidance, system commissioning, and acceptance services (as per the technical agreement stipulated in the contract), along with structured operation and maintenance training for your team.
• After-Sales Service: We provide 24/7 remote technical support and lifetime free upgrades for standard software. Key spare parts are kept in stock for rapid supply. A robust response mechanism covering remote diagnosis and on-site repair ensures long-term stable operation of the equipment and promptly resolves any post-purchase concerns.

The scope of the quotation will be determined according to the project region and contract terms. Typically, equipment, transportation, installation and commissioning, and training costs will be itemized in the quotation to avoid hidden charges.

Payment terms are generally: a certain percentage of advance payment after contract signing, with the balance paid before shipment. The specific advance payment ratio, payment milestones, and balance arrangements will be negotiated and determined in the commercial contract based on the project.