NKE-DTTS-AUTO/ 10000 Automatic Distribution Transformer Test System
Product Overview
NKE-DTTS-AUTO/10000 belongs to the Automatic Distribution Transformer Test Series (DTTS-AUTO) and is an integrated testing device specifically designed for medium- and large-capacity transformers. The entire system integrates an inverter power supply, intermediate transformer, compensation capacitors, measurement system, and switchgear into a single 40-foot container, fully meeting standard maritime shipping requirements and offering exceptional mobility. The system supports three-phase/single-phase transformer testing, covering a capacity range of 5,000 kVA to 30,000 kVA, and can accommodate both conventional distribution transformers and new-energy transformers such as those used in photovoltaic and wind power applications. It strictly complies with IEC 60076 and IEEE C57.12.90-2021 international standards, providing transformer manufacturers with a standardized, traceable, and automated mass-testing solution.
Core Configuration and Technical Parameters
1. Integrated Carrier: A standard 40-foot container that meets international maritime transport requirements, enabling rapid cross-border transportation and on-site deployment of the equipment.
2. Applicable Voltage Levels: Three-phase and single-phase transformers.
3. Test Capacity Coverage: 5,000 kVA to 30,000 kVA; for transformers of different voltage levels, the maximum test capacity can be matched accordingly:
- For 4.16 kV transformers: Maximum test capacity of 6,300 kVA, compatible with impedance voltages of 5.75% to 8.0%.
- For 6.9/0.38–2.08 kV transformers: Maximum test capacity of 10,000 kVA, compatible with impedance voltages of 5.75% to 10.0%.
4. Measurement Configuration: Equipped with Class 0.05 precision current and voltage transformers to ensure high accuracy and reliability of test data; utilizes YOKOGAWA WT500 series or higher power analyzers to meet the precise power-loss measurement needs of high-capacity transformers.
5. Compliance Standards: Strictly adheres to IEC 60076 international transformer standards and IEEE C57.12.90-2021 North American transformer testing standards, ensuring globally recognized test results.
Test Items and Operating Procedures
The system supports all core test items required for factory acceptance testing of transformers, including DC resistance testing, turns-ratio and winding connection group testing, insulation resistance testing, no-load loss testing, load loss testing, induced voltage withstand testing, and external applied voltage withstand testing. Additional tests such as temperature-rise and partial-discharge testing can also be selected as needed. For different test items, the system employs a hybrid wiring mode of “automation plus semi-automation,” balancing testing efficiency with operational flexibility:
1. DC Resistance and Turns-Ratio/Winding Connection Group Testing: Uses a dedicated test trolley to complete both tests with a single wiring setup, eliminating repeated disassembly and reconnection, significantly reducing wiring workload and operator error. After testing, data is automatically uploaded to the routine test system for centralized management and traceability.
2. No-Load Loss, Load Loss, Induced Voltage Withstand, and External Applied Voltage Withstand Tests: Following manual wiring according to test requirements, the computer program automatically executes the entire testing process. Operators only need to input basic transformer parameters, and the system handles full automation of the testing procedure without any manual intervention.
3. Test Result Processing: Upon completion of all test items, the system automatically calculates the test data and generates a test report compliant with factory specifications, supporting direct export to simplify subsequent data organization and archiving.
Key Advantages
1. Integrated Container Design: The entire equipment is housed within a standard 40-foot container, featuring a compact structure that requires no on-site assembly. It can be rapidly transported worldwide via sea or land, addressing industry challenges posed by bulky, heavy, and difficult-to-deploy large-capacity testing equipment—particularly suitable for overseas plant installations and mobile testing needs.
2. Hybrid Wiring Mode Enhances Efficiency: For frequently tested items, an automated test trolley enables one-time wiring, minimizing repetitive wiring tasks; while for complex voltage-withstand tests, manual wiring retains flexibility. Combined with fully automated testing procedures, this approach ensures both testing accuracy and significant improvements in overall testing efficiency, resolving the fragmented operation issues of traditional equipment.
3. Full Capacity Range Compatibility: Covering medium- to large-capacity transformers from 5,000 kVA to 30,000 kVA, it accommodates both conventional distribution transformers and specialized testing needs of new-energy transformers such as those used in photovoltaic and wind power applications, overcoming the limitations of traditional equipment unable to handle high-capacity new-energy transformers.
4. High-Precision Measurement Configuration: The combination of Class 0.05 precision current and voltage transformers with YOKOGAWA WT500 series power analyzers ensures highly accurate and stable test data, providing reliable evidence for quality control at the transformer manufacturing stage.
5. Standardized Data Management: Test data is automatically uploaded to the routine test system, enabling centralized storage, management, and traceability, thereby solving the problem of scattered, hard-to-unify test data traditionally encountered and meeting modern factory quality-control requirements.
6. International Standard Compliance: Conforms to IEC 60076 and IEEE C57.12.90-2021 international standards, ensuring globally recognized test results and helping transformer manufacturers meet overseas market access requirements.
Core Product Value
1. Reduced Testing Costs: Through automated testing processes and one-time wiring design, labor time and wiring errors are minimized, lowering both manpower costs and rework expenses during testing.
2. Improved Testing Efficiency: The hybrid automation model significantly shortens the testing cycle for each transformer, meeting the demands of batch production and enhancing overall production throughput.
3. Guaranteed Testing Accuracy: High-precision measurement configuration and standardized testing procedures ensure the accuracy and consistency of test data, providing reliable assurance for transformer quality upon factory release.
4. Simplified Data Management: Automated data upload and report export functions enable digital management of test data, facilitating quality traceability and data analysis, thus elevating the factory’s quality-management capabilities.
5. Enhanced Market Adaptability: With internationally compliant testing capabilities and container-based mobile deployment features, the product helps companies expand into overseas markets and meet the testing needs of emerging sectors such as new-energy transformers.
Target Customer Groups
Transformer manufacturers worldwide, producers of new-energy transformers, large-scale electrical equipment testing institutions, transformer-exporting enterprises, and power engineering construction companies—especially those with batch-production capabilities, plans to expand overseas markets, or involved in manufacturing new-energy transformers.
Application Scenarios
1. Factory Acceptance Testing of Transformers: As a core testing device at the end of the production line, it completes comprehensive factory acceptance tests for medium- and large-capacity distribution transformers, ensuring product quality meets required standards.
2. New-Energy Transformer Manufacturing: Compatible with high-capacity transformers used in photovoltaic, wind power, and other new-energy fields, satisfying their specific technical standards and testing requirements.
3. Multi-Voltage/Large-Capacity Transformer Testing: Provides standardized, high-precision testing services for medium- and large-capacity transformers of various voltage levels and capacities, covering transformer testing needs across power systems, industrial distribution, and other sectors.
4. Mobile Testing Services: Leveraging its container-based integrated design, it offers cross-regional mobile testing services, providing professional transformer testing support to remote areas or temporary production sites.
Solutions to Industry Pain Points
1. Addressing the challenge of wiring large-capacity transformers: Using a test trolley to complete DC resistance and turns-ratio tests with a single wiring setup, avoiding repeated connections and reducing wiring workload by over 50%, thereby minimizing the risk of operational errors.
2. Solving the issue of chaotic test-data management: Automatically uploading test data to the routine test system enables centralized storage and unified management, facilitating subsequent quality traceability and data analysis, replacing traditional paper records and dispersed instrument data management practices.
3. Overcoming difficulties in transporting and deploying large testing equipment: Its container-based integrated design meets standard maritime shipping requirements, allowing rapid global transport without on-site assembly; once delivered, the equipment can be immediately put into use, significantly reducing deployment time and costs.
4. Resolving the fragmentation of operating procedures: Adopting a hybrid wiring mode that matches the most suitable operational method for different test items—retaining flexibility for complex projects while automating core testing processes—creates a coherent and efficient testing workflow.
5. Tackling the poor compatibility of new-energy transformers: Covering a wide capacity range from 5,000 kVA to 30,000 kVA and complying with the latest international standards, it meets the special testing needs of new-energy transformers, overcoming the shortcomings of traditional equipment unable to adapt to such applications.
Frequently Asked Questions (FAQ)
Q1: What are the differences between NKE-DTTS-AUTO/10000 and other models in the same series?
A: The NKE-DTTS-AUTO series is divided into four models based on test capacity: 5,000, 10,000, 20,000, and 30,000. Among them, NKE-DTTS-AUTO/5,000 uses a 20-foot container, while the remaining models, including 10,000, all utilize 40-foot containers. All models cover a capacity range of 5,000 kVA to 30,000 kVA, with consistent core configurations and testing standards.
Q2: Does the system support temperature-rise and partial-discharge tests?
A: The system comes standard with core test items; temperature-rise and partial-discharge tests are optional and can be configured according to customer needs to meet the testing requirements of different types of transformers.
Q3: How is test data managed in a unified manner?
A: Data from DC resistance and turns-ratio tests can be automatically uploaded to the routine test system, while reports generated after completing other test items can also be imported into the system, achieving centralized storage, retrieval, and traceability of all test data, thus meeting the digital management needs of modern factories.
Q4: Can the equipment be used directly at overseas sites?
A: The equipment adopts a standard container design that meets international maritime shipping requirements. Upon arrival at overseas sites, it only needs to be connected to a power source to become operational, requiring no additional assembly. Moreover, its testing standards comply with IEC and IEEE international standards, ensuring globally recognized test results.
