Product Overview
The NKE-DTTS-SE/30000 semi-automatic distribution transformer test system is an integrated, standardized containerized comprehensive testing device for transformers. It strictly complies with IEC 60076 and IEEE C57.12.90-2021 international standards and is specifically designed for factory acceptance testing of medium- and large-capacity distribution transformers. The equipment supports full-range factory tests for oil-immersed and dry-type transformers across all voltage levels from 4.16 kV to 34.5 kV, with capacities ranging from 5,000 kVA to 30,000 kVA. It accommodates both three-phase and single-phase transformers, leveraging high-precision measurement configurations and a semi-automatic workflow to automatically perform test calculations and generate reports, making it the core equipment for efficient and compliant testing of medium- and high-voltage, large-capacity transformers.
The entire system integrates the distribution cabinet, variable-frequency power supply, intermediate transformer, compensation capacitor, and a complete set of measurement systems within a standard 20-foot or 40-foot container. Its modular structure eliminates the need for complex infrastructure, enabling rapid deployment on-site. Equipped with 0.05-class precision current transformers and Yokogawa WT500 or higher-end power analyzers, the system ensures accurate and compliant test data, suitable for batch factory testing, certification inspections, and on-site acceptance scenarios of medium- and large-capacity transformers worldwide.
Operating Principle
DC resistance and turns-ratio tests are conducted using a dedicated test vehicle, allowing quick parameter acquisition through a one-time wiring setup; test data can be directly uploaded to the routine test system.
No-load loss, load loss, induced withstand voltage, and power-frequency withstand voltage tests are performed according to international procedures with manually standardized wiring, while the entire test process is automatically executed by computer programs.
The system is equipped with high-precision current transformers and high-end power analyzers to collect, compute, and calibrate test data in real time, automatically determining test results.
Upon completion of all test procedures, the equipment automatically aggregates data, generates, and exports standard factory test reports, achieving semi-automatic, high-precision, and standardized full-range testing operations.
Core Test Items
Standard default test items include: DC resistance test, turns-ratio test, insulation resistance test, no-load loss test, load loss test, induced withstand voltage test, and power-frequency withstand voltage test.
Optional extended test items include: temperature-rise test and partial-discharge test.
System Voltage and Capacity Adaptability
The equipment supports universal testing for both three-phase and single-phase transformers, covering all mainstream voltage levels from 4.16 kV to 34.5 kV, with corresponding capacity and impedance ranges as follows:
1. For 4.16 kV transformers: maximum test capacity 6,300 kVA, impedance voltage 5.75%–8.0%.
2. For 6.9/0.38–2.08 kV transformers: maximum test capacity 12,000 kVA, impedance voltage 5.75%–10.0%.
3. For 13.8(13.09/13.2/12.47)/0.38–4.16 kV transformers: maximum test capacity 20,000 kVA, impedance voltage 5.75%–10.0%.
4. For 16.34/0.48 kV transformers: maximum test capacity 20,000 kVA, impedance voltage 5.75%–12.0%.
5. For 27(24.7/23.0)/0.38–4.16 kV transformers: maximum test capacity 20,000 kVA, impedance voltage 5.75%–12.0%.
6. For 34.5/0.38–13.2 kV transformers: maximum test capacity 30,000 kVA, impedance voltage 5.75%–12.0%.
Testing Standards: IEC 60076, IEEE C57.12.90-2021.
System Precision Configuration: 0.05-class precision current transformers, with power analyzers featuring Yokogawa WT500 or higher models.
Key Advantages and Selling Points (keyword layout optimized for Google SEO):
Ultra-large capacity coverage: Supports testing of up to 30,000 kVA transformers, covering medium- and large-capacity models from 5,000 kVA to 30,000 kVA—far surpassing traditional small-scale test equipment.
Full voltage-level compatibility: Supports multiple voltage levels from 4.16 kV to 34.5 kV, applicable to both three-phase and single-phase transformers, adapting to mainstream domestic and international distribution transformer specifications.
International standard compliance: Strictly adheres to both IEC 60076 and IEEE C57.12.90-2021, ensuring authoritative and compliant test data, with globally recognized reports.
Ultra-high testing accuracy: Equipped with 0.05-class precision current transformers and Yokogawa WT500 high-end power analyzers, delivering precise data with minimal error and exceptional stability.
Semi-automatic, highly efficient operation: Resistance and turns-ratio tests use one-time wiring, while other tests run automatically via programmed processes, calculating data and generating reports automatically, significantly reducing human error.
Containerized modular design: Integrated into standard 20-foot or 40-foot containers, eliminating cumbersome infrastructure requirements, facilitating easy transportation and immediate usability, ideal for rapid overseas deployment.
Comprehensive, expandable test capabilities: Comes standard with all routine factory test items, supports additional temperature-rise and partial-discharge tests, providing a one-stop solution for complete transformer routine inspections.
Complete supporting services: Includes standard wiring operation guidelines and offers equipment demonstration services, lowering the barrier to entry for operators.
Target Customer Groups
Global manufacturers of medium- and large-capacity transformers, international third-party quality inspection and certification agencies, power equipment maintenance companies, overseas general contractors for power projects, and organizations constructing modular test stations.
Application Scenarios
Medium- and large-capacity transformer manufacturers: Routine full-range factory tests for medium- and large-capacity distribution transformers ranging from 5,000 kVA to 30,000 kVA.
Third-party quality inspection and certification agencies: Standard testing and certification trials for medium- and high-voltage distribution transformers spanning 4.16 kV to 34.5 kV.
Power maintenance companies: On-site acceptance inspections upon arrival of project transformers, along with performance sampling tests.
Overseas power projects: Containerized equipment transported across borders, rapidly deployed on-site for construction.
Modular test station construction: Rapid establishment of standardized, mobile, relocatable transformer factory testing bases.
Solving Industry Pain Points
Addresses industry challenges posed by traditional fixed test stations—cumbersome infrastructure, lengthy construction periods, immobility, and difficulties in overseas deployment.
Overcomes issues with ordinary test equipment—insufficient precision, non-standard data, failure to meet IEC/IEEE international standards, and reports not recognized internationally.
Resolves the limitation of traditional equipment—low capacity ceiling, unable to test medium- and large-capacity 30,000 kVA models.
Tackles the complexity of traditional manual step-by-step testing—complicated wiring, significant human error, high labor costs, and low testing efficiency.
Addresses the shortcoming of conventional testing requiring multiple devices for separate tests, scattered test items, chaotic workflows, and inability to provide one-stop comprehensive testing.
Core Product Value
The NKE-DTTS-SE/30000 semi-automatic distribution transformer test system creates core value for medium- and large-capacity transformer manufacturing and testing enterprises: its containerized modular design eliminates the need for complex infrastructure, dramatically shortening the time required to establish a test station and reducing capital investment; its ultra-large capacity and full voltage-level coverage allow a single unit to replace multiple traditional test setups, improving equipment utilization; backed by 0.05-class high-precision configuration and dual international standards, it ensures accurate, compliant test data and globally accepted reports, aiding product export certifications; its semi-automatic operating mode simplifies procedures, reduces human error, boosts batch factory testing efficiency, comprehensively lowers production and testing costs, and enhances product quality and international competitiveness.
Frequently Asked Questions (FAQ)
Q1: What is the maximum transformer capacity supported by the NKE-DTTS-SE/30000 test system?
A: The equipment supports testing of transformers up to 30,000 kVA, fully covering medium- and large-capacity oil-immersed and dry-type distribution transformers ranging from 5,000 kVA to 30,000 kVA.
Q2: Which international testing standards does the equipment comply with?
A: It strictly conforms to both IEC 60076 and IEEE C57.12.90-2021, ensuring that test data and reports meet international certification and export acceptance requirements.
Q3: Which transformer voltage levels does the equipment support?
A: It adapts to all medium- and high-voltage levels, including 4.16 kV, 6.9 kV, 13.8 kV, 16.34 kV, 27 kV, and 34.5 kV, compatible with both single-phase and three-phase transformers.
Q4: What precision configuration does the equipment employ, and is the data reliable?
A: It features 0.05-class precision current transformers and comes standard with Yokogawa WT500 or higher power analyzers, ensuring high-precision measurements, stable data, and extremely low error rates.
Q5: Is it suitable for overseas projects and on-site deployment?
A: Yes, it is well-suited—entirely integrated into a standard container, requiring no infrastructure, easy to transport, ready for immediate use, and capable of quickly establishing modular test stations overseas.
Q6: Can test reports be generated automatically?
A: Yes, it supports automatic calculation of test results and automatic generation of standard factory test reports, with data uploadable to routine test systems and fully standardized record-keeping throughout the process.
