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As demand grows for large power transformers, high-voltage and extra-high-voltage transformers, and transformers for renewable energy applications, transformer manufacturers face increasing requirements for testing capability, measurement accuracy, delivery time, and on-site deployment efficiency.
Traditional transformer test stations often involve multiple equipment configurations, system integration, and on-site installation and commissioning, resulting in relatively long project lead times. Nanke Electric’s Modular Automatic Power Transformer Test System (Model: PTTS-MD-AUTO) combines modular design with automated measurement and control technology. It is designed for comprehensive testing of large power transformers rated up to 345 kV and 240 MVA.
The system requires only five months from contract signing to shipment and can achieve on-site commissioning and operation within 30 days. This helps transformer manufacturers shorten test system deployment timelines and optimize facility planning and operational management.
A large power transformer testing system must not only meet the required voltage, capacity, and measurement accuracy specifications, but also address equipment integration, on-site deployment, safety control, and subsequent maintenance.
Compared with traditional test station construction, Nanke Electric’s modular system integrates key testing equipment, automated control, and supporting measurement units to simplify deployment and commissioning.
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Comparison |
Traditional Test Station Approach |
Nanke Electric Modular Test System |
|
System construction |
Multiple equipment configurations and system integration |
Modular integrated design |
|
Project delivery |
Traditional projects typically take 8–12 months |
Approximately 5 months from contract signing to shipment |
|
On-site commissioning |
Depends on installation, wiring, and commissioning progress |
On-site commissioning and operation within 30 days |
|
Facility planning |
Requires overall planning around equipment layout |
Flexible deployment through modular layout |
|
Data management |
Depends on individual equipment and management procedures |
Automatic data acquisition and test report generation |
|
Operational management |
Requires coordination across multiple testing stages |
Integrated control simplifies operating procedures |
Through modular design and system integration, transformer manufacturers can plan testing capacity more efficiently while reducing repetitive construction and on-site integration work.
Nanke Electric’s Modular Automatic Power Transformer Test System is designed for comprehensive testing of large power transformers rated up to 345 kV and 240 MVA. It can support testing requirements for high-voltage and extra-high-voltage transformers, wind power transformers, photovoltaic transformers, and special-purpose transformers.
The system integrates key equipment, including a variable frequency power supply, an intermediate transformer, high-voltage compensation capacitors, precision current transformers, and precision voltage transformers. Together, these components provide the power supply, compensation, and measurement capabilities required for a range of transformer tests.
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Equipment |
Main Technical Specifications |
Quantity |
|
Variable Frequency Power Supply |
Rated capacity: 3,000 kVA; frequency adjustment range: 45–200 Hz; output voltage: 0.1–6 kV |
1 set |
|
Intermediate Transformer |
Rated capacity: 5,000 kVA; ratio: 6 kV/(2×23) ± 8×2 kV; three-phase off-circuit tap changer on the high-voltage side; supports three-phase series/parallel switching |
1 set |
|
High-Voltage Compensation Capacitor Bank |
Total compensation capacity: 107,460 kvar; rated voltage: 12–72 kV; six-series star connection; supports switching between single-phase and three-phase modes |
1 set |
|
Precision Current Transformers (CTs) |
Accuracy class: 0.01; current range: 10–2,000 A; insulation withstand parameters: 120/√3 kV and 3 kV |
3 sets |
|
Precision Voltage Transformers (VTs) |
Accuracy class: 0.01; measurement ranges include 10–120/√3 kV, 100/√3 kV, and 3 kV |
3 sets |
The entire system is designed for Class 0.01 metering accuracy, providing high-accuracy measurement for relevant transformer tests. The variable frequency power supply allows continuous frequency adjustment from 45 to 200 Hz to support applicable tests under different frequency conditions.
The high-voltage compensation capacitor bank can be switched automatically under computer control to match reactive power requirements. The variable frequency power supply incorporates harmonic suppression and hardware protection against overcurrent, overvoltage, and overtemperature.
Specific test items and operating conditions depend on the system configuration and applicable test requirements.
A large transformer test station involves multiple equipment units, auxiliary devices, and site infrastructure. Controlling facility construction costs while meeting testing requirements is an important consideration when transformer manufacturers plan a new test station.
Nanke Electric’s Modular Automatic Power Transformer Test System features an integrated modular design. The complete system is shipped in five 40-foot containers, facilitating transportation, on-site deployment, and system integration.
The modular approach helps optimize equipment layout and infrastructure planning. Depending on the project application, infrastructure costs can be reduced by more than 40%, offering transformer manufacturers greater flexibility when building or upgrading large transformer test stations.
Project delivery time directly affects how quickly transformer manufacturers can establish testing capabilities. Traditional test station projects typically take 8–12 months, while Nanke Electric’s Modular Automatic Power Transformer Test System can be shipped within five months of contract signing and achieve on-site commissioning and operation within 30 days.
Through modular equipment integration and automated control, the system helps reduce on-site equipment integration and commissioning workload, streamlining the process from equipment delivery to operational readiness.
For manufacturers planning to expand testing capacity, upgrade existing test stations, or establish testing facilities for renewable energy transformers, a shorter project timeline can accelerate deployment and support subsequent production and quality testing activities.
The system uses computer-based automatic control to integrate the power supply, switching devices, compensation capacitors, and instrument transformers into a unified measurement and control process. Operators can initiate the relevant tests according to predefined procedures. The system automatically acquires test data and generates test reports, reducing repetitive operations and manual data processing.
Built-in algorithms for relevant Chinese national standards and IEC standards, together with data tamper-protection features, support test data management and traceability, helping companies maintain quality records and prepare for relevant audits.
Testing large power transformers involves high voltages, high currents, and associated testing risks. The system employs dual software and hardware protection mechanisms, with corresponding protection and trip functions for conditions such as overvoltage, overcurrent, electrical breakdown, and grounding abnormalities.
Access control and infrared-linked safety features further support standardized safety management in the test area.
Through automated control, equipment integration, and improved operational management, the system helps reduce the impact of equipment downtime and repetitive operations. Depending on the project application, equipment fault-related downtime can be reduced by 70%, while long-term electricity costs can be reduced by 25–35%.
These figures illustrate the system’s potential cost optimization benefits in relevant applications. Actual results may vary depending on site configuration, operating conditions, and usage patterns.
For international transformer manufacturers, the value of a testing system extends beyond equipment performance. Installation and commissioning, personnel training, operational maintenance, and ongoing technical support are also important considerations.
Nanke Electric provides relevant project services and technical support for its Modular Automatic Power Transformer Test System, including:
●On-site services: Equipment installation, commissioning, and operator training.
●Technical documentation: Relevant documentation available in English, Spanish, Arabic, and other languages as applicable.
●Remote support: 24/7 remote technical support.
●Spare parts support: Overseas spare parts warehousing to assist with subsequent maintenance.
●Quality and calibration documentation: Third-party calibration certificates, type test reports, and other relevant documents can be provided according to project requirements.
●Core component warranty: A three-year warranty for core components.
By supporting customers from equipment delivery and on-site commissioning through subsequent operation, Nanke Electric helps address the lifecycle requirements of transformer testing systems.
For large power transformer manufacturers, selecting an appropriate testing system requires consideration of testing capability, measurement accuracy, project timeline, site conditions, safety protection, and long-term operating costs.
Nanke Electric’s Modular Automatic Power Transformer Test System (PTTS-MD-AUTO) is designed for comprehensive testing of large power transformers rated up to 345 kV and 240 MVA. With modular integration, Class 0.01 metering accuracy, five-month delivery, and 30-day on-site commissioning and operation, the system offers transformer manufacturers an option for establishing or upgrading large power transformer test stations.
Learn more about the product:Modular Automatic Power Transformer Test System
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