Product Overview
The NPTTS-HC/20 transformer test capacitor is a core product of the NPTTS-HC series, serving as a dedicated key supporting device for power transformer test stations. It is often used in conjunction with high-voltage variable-frequency power supplies and has been specifically developed and designed for transformer load testing scenarios. The equipment can achieve large-capacity reactive power compensation through a Y/Δ switching interface, effectively reducing the capacity requirements of the main power supply during transformer load tests. When paired with a high-voltage variable-frequency power supply, it provides an adjustable-frequency, adjustable-voltage low-distortion sine wave power source. The entire system supports personalized customization, offering a stable, efficient, integrated solution for power supply and reactive power compensation in various transformer testing applications.
The complete unit adopts an integrated design within a 20-foot container, featuring a compact structure, flexible mobility, and rapid deployment, making it suitable for outdoor temporary testing and on-site testing conditions without access to high-power grids. The equipment supports flexible expansion and precise voltage and frequency adjustment, addressing the issues of high power configuration costs and unstable power supply at small and medium-sized test stations, thus providing a cost-effective, customizable standardized power supply solution for transformer testing.
Operating Principle
The equipment employs a dual-series-parallel configuration combined with a Y/Δ switching interface, allowing flexible mode switching to meet the reactive power compensation needs of different voltage levels;
Relying on built-in capacitor bank energy storage compensation, it quickly offsets the reactive power losses generated during transformer load testing, reduces the load on the main power supply, and significantly lowers the required capacity and investment for test power supply configurations;
When paired with a high-voltage variable-frequency power supply that outputs a low-distortion standard sine wave, it enables precise adjustment of voltage and frequency, ensuring accurate and compliant data for no-load and load loss tests of transformers;
The entire unit utilizes HMI human-machine interaction control plus remote communication computer control, delivering stable automated operation, with parameters and expansion options customizable as needed to accommodate diverse transformer testing scenarios.
Core Technical Parameters
1. Equipment specifications: 20-foot container-type transformer test capacitor
2. Rated total capacity: 6,450 kVAr
3. Single-stage group capacities: 25 kV, 50 kV, 100 kV, 200 kV, 300 kV, 400 kV available
4. Standard configuration capacity: 1,075 kVAr per stage, 2,150 kVAr per phase
5. Rated voltage per capacitor: 1.3 kV per phase
6. Compatible voltage levels: 1.3 kV, 2.25 kV, 2.6 kV, 4.5 kV
7. Connection method: dual-series-parallel structure, supporting Y/Δ interface switching
8. Control method: HMI human-machine control, remote communication computer control
9. Customization services: full-capacity, full-parameter personalized customization supported
Core Advantages and Selling Points
High-efficiency reactive power compensation: Supports Y/Δ mode switching, delivering excellent large-capacity reactive power compensation performance, effectively reducing the power supply capacity requirements for transformer load tests
Multi-voltage compatibility: Compatible with mainstream voltage levels from 1.3 kV to 4.5 kV, fully covering typical power transformer testing scenarios
Smart remote control: Equipped with HMI local operation and remote computer communication control systems, offering simple operation, convenient maintenance, and a high degree of automation
Compact container design: A 20-foot compact container structure, smaller in size, more flexible for transport, and faster to deploy on site
Flexible expansion and customization: Multiple single-stage capacity options available, with overall parameters customizable as needed to suit varying transformer testing requirements
Precise test data: Paired with a variable-frequency power supply that outputs a low-distortion standard sine wave, eliminating waveform deviation issues and ensuring accurate, compliant test data
Cost-effective cost reduction: Suitable for constructing small and medium-sized test stations or upgrading aging equipment, significantly lowering power procurement and infrastructure investment costs
Target Customer Groups
Global transformer manufacturers, third-party transformer certification and testing agencies, small and medium-sized power test station construction entities, power EPC engineering companies, grid operators undertaking upgrades of aging test equipment, and new-energy transformer producers
Application Scenarios
Large-capacity load testing, no-load and load loss testing projects conducted by transformer manufacturers
Transformer type tests and standardized performance testing projects carried out by third-party certification and testing agencies
Field-based mobile transformer load testing operations under conditions without access to high-power grids
Power supply and reactive power compensation support projects for 20-foot container-type outdoor temporary test stations
Specialized testing scenarios involving non-standard frequencies and voltages for new-energy and export-oriented transformers
Projects upgrading aging test power supplies, effectively reducing the required capacity of the main power supply
Solving Industry Pain Points
Addresses the industry challenge of significant reactive power consumption during transformer load testing, coupled with high investment in traditional test power supply setups and expensive infrastructure costs
Overcomes the issue of fixed, unadjustable voltage and frequency in conventional test power supplies, resulting in non-standard waveforms and inaccurate, unapprovable test data
Resolves the pain point of unstable power supply and insufficient power at outdoor and temporary construction sites, hindering the completion of large-capacity transformer load tests
Tackles the limitation of traditional test equipment being too generic and poorly adaptable, unable to accommodate different specification transformers, while supporting customized adaptation to specific operating conditions
Addresses the problem of bulky, difficult-to-transport, long-deployment-cycle large test equipment, with the 20-foot container design enabling rapid deployment and use
Core Product Value
The NPTTS-HC/20 transformer test capacitor brings core value to small and medium-sized transformer test station construction and aging equipment upgrade projects: Through highly efficient reactive power compensation technology, it significantly reduces the required capacity of the main power supply, markedly lowering equipment procurement and infrastructure investment costs; its compact 20-foot container structure offers flexibility and portability, enabling rapid deployment and mobile operations, breaking free from fixed-site and grid constraints; when paired with a variable-frequency power supply, it achieves precise voltage and frequency adjustments, perfectly adapting to non-standard testing standards for new-energy and export-oriented transformers, ensuring accurate and compliant test data, helping enterprises efficiently complete factory inspections, type certifications, and overseas project deliveries, thereby comprehensively enhancing test station operational efficiency and market competitiveness.
Frequently Asked Questions (FAQ)
Q1: What are the primary uses of the NPTTS-HC/20 transformer test capacitor?
A: As a core supporting device for transformer test stations, it achieves large-capacity reactive power compensation via Y/Δ switching, reducing the power supply capacity requirements for load tests, and when paired with a variable-frequency power supply, provides stable, compliant power for various transformer testing applications.
Q2: What specifications of containers and capacity configurations does the equipment adopt?
A: It adopts a 20-foot container structure, with a rated total capacity of 6,450 kVAr, a standard phase capacity of 2,150 kVAr, and supports multiple single-stage capacity options ranging from 25 kV to 400 kV, with customizable parameters.
Q3: Which voltage levels is the equipment compatible with?
A: It is compatible with four mainstream voltage levels—1.3 kV, 2.25 kV, 2.6 kV, and 4.5 kV—meeting the needs of routine power transformer testing.
Q4: What control methods does the equipment offer?
A: It supports local HMI human-machine operation while also being compatible with remote computer control, offering smart, convenient operation suitable for both on-site and remote maintenance.
Q5: For which project scenarios is this equipment suitable?
A: It is suitable for transformer factory load loss testing, third-party type testing, outdoor mobile testing, non-standard testing for new energy, and upgrading aging test power supplies, among other scenarios.
