NKE-DTTS-AUTO/ 20000 Automatic Distribution Transformer Test System
Product Overview
NKE-DTTS-AUTO/20000 is an automated test system specially designed for medium- and large-capacity distribution transformers as well as new-energy transformers. It is integrated into a standard 40-foot container, fully meeting maritime transport requirements. The system combines core components such as inverter power supplies, intermediate transformers, compensation capacitors, measurement systems, and switches into a single unit, offering significant advantages of high integration. For different test items, it employs a hybrid wiring mode: DC resistance and turns-ratio tests can be completed with a single connection via a dedicated test cart, with data automatically uploaded to the conventional test system; while no-load loss, load loss, induced withstand voltage, and applied withstand voltage tests can be performed after manual wiring according to test requirements, with the computer program automatically executing the testing procedure. Upon completion, the system automatically calculates test results and generates standardized factory test reports, comprehensively covering the core needs of transformer outgoing inspections.
Scope of Application and Technical Parameters
This system is compatible with three-phase and single-phase transformers, supporting large-capacity tests across multiple voltage levels. Specific parameters are as follows:
1. 13.8kV class (including 13.09/13.2/12.47kV) / 0.38–4.16kV: maximum test capacity 20,000 kVA, suitable for impedance voltages ranging from 5.75% to 10.0%
2. 16.34kV class / 0.48kV: maximum test capacity 20,000 kVA, suitable for impedance voltages ranging from 5.75% to 12.0%
3. 27kV class (including 24.7/23.0kV) / 0.38–4.16kV: maximum test capacity 20,000 kVA, suitable for impedance voltages ranging from 5.75% to 12.0%
The system’s core measurement components are equipped with high-end precision, featuring 0.05-class precision current transformers to ensure highly accurate test data; it also utilizes YOKOGAWA WT500 series or higher power analyzers to guarantee accuracy and reliability in power-related tests. The system is rigorously designed and manufactured in accordance with IEC 60076 and IEEE C57.12.90-2021 international standards, ensuring that test results carry industry-wide authority and recognition.
Core Test Items
NKE-DTTS-AUTO/20000 can perform the full range of core tests required for transformer outgoing inspections, including:
1. DC Resistance: Completed with a single connection via the test cart, with data automatically uploaded, efficiently obtaining winding DC resistance data to assess winding quality
2. Turns Ratio and Connection Group Tests: Simultaneously measures turns ratio and identifies connection group types, ensuring precise voltage transformation and correct wiring
3. Insulation Resistance: Evaluates transformer insulation performance, assessing the reliability of the insulation system
4. No-Load Loss: Automatically executed after manual wiring, measuring energy consumption under no-load conditions to evaluate core performance
5. Load Loss: Measures losses under simulated load conditions, evaluating winding conductivity and loss levels
6. Induced Withstand Voltage Test: Assesses the insulation strength of transformer windings, simulating the ability to withstand overvoltage conditions
7. Applied Withstand Voltage Test: Conducts a withstand voltage test on the entire transformer insulation system, ensuring safe operation
8. Temperature Rise Test (optional): Simulates long-term operating conditions to measure temperature rise in various transformer components, verifying thermal stability
9. Partial Discharge Test (optional): Detects internal partial discharge phenomena, identifying potential insulation hazards early
Key Advantages
1. Integrated Container Design: The system is housed within a standard 40-foot container, featuring a compact structure that meets global maritime transport requirements. No complex on-site installation is needed, allowing rapid deployment at test sites and addressing challenges associated with transporting and setting up large-capacity testing equipment.
2. Hybrid Wiring Automation Process: Different wiring modes are adopted for various test items—DC resistance and turns ratio tests are completed with a single connection via the test cart, significantly reducing wiring effort and error rates; other tests require manual wiring but are then automatically executed by the program, balancing testing flexibility with automation efficiency and resolving the fragmentation inherent in traditional testing procedures.
3. Centralized Data Management: Test data is automatically uploaded to the conventional test system, enabling unified storage, management, and traceability, thus avoiding scattered, hard-to-integrate data and enhancing the usability of test data.
4. Large Capacity and New-Energy Compatibility: Supports testing of transformers up to 20,000 kVA, covering the medium-to-large capacity range of 5,000–30,000 kVA, and adapts to special testing needs of photovoltaic, wind power, and other new-energy transformers, solving the problem of traditional equipment struggling to accommodate new-energy transformers.
5. High-Precision Measurement Configuration: Equipped with 0.05-class precision current transformers and YOKOGAWA WT500 series power analyzers, ensuring highly accurate and reliable test data that meets international standards, lending authority to test results.
6. Automated Report Generation: After testing, the system automatically computes results and generates standardized factory test reports, eliminating the need for manual data compilation and improving both testing efficiency and report standardization.
Core Product Value
1. Reduced Testing Workload: With a single connection via the test cart completing DC resistance and turns ratio tests, compared to traditional multi-step wiring methods, this approach dramatically cuts down wiring time and labor costs, boosting testing efficiency.
2. Achieved Data Traceability: Unified upload of test data to the test system facilitates subsequent data retrieval, analysis, and traceability, helping companies establish standardized test data management systems.
3. Enhanced Testing Flexibility: The hybrid wiring mode ensures automation efficiency for core items while preserving manual wiring flexibility for certain tests, adapting to diverse transformer testing needs.
4. Expanded Business Coverage: Supporting large-capacity and new-energy transformer testing helps transformer manufacturers broaden their business scope and meet emerging market demands.
5. Ensured Testing Compliance: Compliant with IEC and IEEE international standards, the test results are authoritative and reliable, satisfying compliance requirements for transformer exports and high-end markets.
Target Customer Groups
Global transformer manufacturers, new-energy transformer producers, major power equipment suppliers, third-party power testing agencies, transformer export traders, and others—especially enterprises capable of producing medium- to large-capacity transformers or engaged in new-energy transformer businesses.
Application Scenarios
1. Transformer Factory Outgoing Inspection: As a core testing device at the end of the production line, it completes comprehensive performance checks before transformers leave the factory, ensuring product quality meets standard requirements.
2. New-Energy Transformer Manufacturing: Specifically for large-capacity transformers used in photovoltaic, wind power, and other new-energy sectors, it conducts specialized performance tests to meet the unique technical requirements of new-energy equipment.
3. Multi-Voltage/Large-Capacity Transformer Testing: Adaptable to transformers of various voltage levels and up to 20,000 kVA capacity, covering testing needs for both traditional power systems and emerging energy systems.
4. Mobile Testing Laboratory: Leveraging its container-based integrated design, it can serve as a mobile testing laboratory, providing professional testing services for remote areas or on-site transformers.
Solutions to Industry Pain Points
Addressing key industry pain points in medium- and large-capacity transformer testing, NKE-DTTS-AUTO/20000 offers systematic solutions:
1. Solving Difficult Wiring Challenges: A single connection via the test cart completes DC resistance and turns ratio tests, eliminating the cumbersome process of multiple connections for large-capacity transformers, reducing wiring errors, and significantly shortening test preparation time.
2. Tackling Data Management Issues: Test data is automatically uploaded to the conventional test system, enabling centralized storage and management for easy subsequent retrieval, analysis, and traceability, replacing traditional paper records and fragmented data storage methods.
3. Overcoming Transportation and Deployment Hurdles: Its container-based integrated design complies with maritime shipping standards, allowing global transport without complex on-site installation, facilitating rapid deployment at test sites and adapting to testing needs across different regions.
4. Resolving Fragmentation in Operational Procedures: The hybrid wiring mode balances automation and flexibility—core items are executed automatically, while special projects retain manual wiring options—optimizing testing workflows and boosting overall testing efficiency.
5. Addressing New-Energy Adaptation Challenges: Supporting large-capacity transformer testing and meeting the specific technical requirements of new-energy transformers, helping companies expand into new-energy business areas without needing to purchase additional specialized testing equipment.
Frequently Asked Questions (FAQ)
Q1: What is the test capacity range of NKE-DTTS-AUTO/20000?
A: This system supports transformers up to 20,000 kVA, covering the medium-to-large capacity range of 5,000–30,000 kVA, and is compatible with both three-phase and single-phase transformers across multiple voltage levels.
Q2: How is the system’s test data managed?
A: Data from DC resistance and turns ratio tests can be automatically uploaded to the conventional test system, enabling centralized storage, management, and traceability. Data from other test items is also synchronized into the system, facilitating unified querying and analysis.
Q3: Does the system support new-energy transformer testing?
A: Yes, the system is specifically adapted to large-capacity transformers used in photovoltaic, wind power, and other new-energy fields, meeting the special testing standards and performance requirements of new-energy transformers.
Q4: What transportation options does the system offer?
A: The system is integrated into a standard 40-foot container, fully compliant with global maritime shipping requirements. It can also be transported by road or rail, offering flexible and convenient deployment options.
Q5: Which international standards does the system comply with?
A: The system is rigorously designed and manufactured in accordance with IEC 60076 and IEEE C57.12.90-2021 international standards, ensuring that test results carry industry-wide authority and recognition, meeting compliance requirements for transformer exports and high-end markets.
