Integrated Design & Space Saving
For urban renewal, community supporting and commercial plot power distribution projects, limited site space is the core problem faced by buyers.The 10kV Compact Transformer Substation launched by Kechang Electric adopts the integrated design of "transformer + switchgear + compensation device", which integrates traditional decentralized equipment into a closed box structure, covering an area of only 1/3 of that of conventional civil substations, and reducing weight by 40%.There is no need to build a separate transformer room and switch cabinet room, and it can be installed directly on the ground in small spaces such as green belts and parking lot corners, greatly reducing civil construction costs and site occupation pressure, and speeding up the progress of the project.
Rapid Deployment & Installation Efficiency
- Buyers generally attach importance to the project construction cycle to avoid
delays in the installation of power distribution equipment affecting the overall delivery.The product has completed the whole process of internal wiring, debugging, withstand voltage testing, etc. before leaving the factory, to achieve "out-of-the-box installation and power-on ready-to-use".Using a modular docking design, only the connection of the inlet and outlet cables and the foundation fixation need to be completed on site, and the installation and commissioning of the complete set of equipment can be completed within 1 day by 2-3 staff, which is 70% shorter than the construction cycle of traditional substations.At the same time, it supports the dual methods of hoisting and forklift transfer, and is suitable for site scenarios without large-scale hoisting equipment to further enhance deployment flexibility.
Low-Operation Maintenance & Reliability
The difficulty and high cost of operation and maintenance of outdoor scenes are the key concerns of buyers.The protection level of this product reaches IP54. The box adopts fluorocarbon spraying process, which has excellent corrosion resistance and UV resistance. The key internal components are treated with VPI vacuum pressure impregulation process and cooperate with Class H insulation material. There is no need for frequent maintenance for long-term operation.Equipped with an intelligent inspection module, the temperature of the core components is monitored in real time through the PT100 temperature sensor, and the alarm is automatically triggered when abnormal. The average annual failure rate is controlled within 0.2%, and the expected service life is up to 25 years, which greatly reduces the manpower and material investment in late operation and maintenance.
Noise Reduction & Residential Adaptation

Noise pollution in power distribution projects around residential areas and schools can easily cause complaints, and buyers have an urgent need for low-noise performance.Kechang optimizes the noise reduction design in a targeted manner. The transformer core adopts high-permeability cold-rolled silicon steel sheet, with full oblique step lap technology and shock absorber device, the operating noise is controlled within 45dB, which fully complies with IEC 60076 noise standard.The box adopts a sound-proof structure design to further block the internal operating noise. There is no need to install additional sound-proof facilities. It can be installed directly around residential areas to avoid the risk of noise complaints and adapt to scenes with strict environmental requirements.
Environmental Adaptability & Weather Resistance
Outdoor scenes face complex weather such as high and low temperatures, heavy rains, and dust, and the environmental adaptability of the equipment directly determines the operating stability.The product can operate stably in a wide temperature range of -30℃~55℃, and is equipped with an anti-condensation heater and an intelligent temperature control device to avoid failure caused by moisture condensation.The box has excellent sealing performance, waterproof, dustproof, and anti-invasion by small animals. It can withstand short-term heavy rains and strong wind and sand weather. It is suitable for a variety of complex areas such as high altitude, hot and humid in the south, and severe cold in the north. No additional protective facilities are required to reduce project supporting costs.
Customization & Compliance Support

There are differences in the load characteristics and site size of different projects. Compliance and customized services are the core needs of buyers.Based on the 10kV voltage level, Kechang Electric can customize the capacity of 50kVA-2000kVA, optimize the parameters of the compensation device, the way in and out of the line, and the size of the box to adapt to the needs of different scenarios.The products are produced in strict accordance with IEC 60076 and GB 7251 standards, have passed CE and RoHS certification, and come with a complete factory inspection report. The technical team provides on-site investigation, program customization, and acceptance guidance. The whole process is supported, and the whole machine is promised for 5 years. Warranty, free replacement of core components, completely solve buyers' concerns.
Comprehensive Procurement & After-Sales Guarantee
We offer one-stop services covering the entire life cycle of the CTS: pre-sales program design, factory inspection, on-site installation guidance, and operator training. The product comes with a 2-year overall quality warranty, and we provide free spare parts supply and on-site maintenance services within the warranty period. For emergency faults, our after-sales team provides 72-hour on-site response (domestic) and overseas authorized service support. Additionally, we offer 15-year long-term technical upgrading services to ensure the CTS adapts to future power grid development needs. This comprehensive guarantee solves your concerns about technical risks, delivery delays, and post-sales maintenance, ensuring worry-free procurement and operation.
Work Conditions
1.Ambient temperature :-5℃ to +40℃;
2. Altitude: No more than 2000 meters;
3. Relative humidity:
Daily average ≤95%, monthly average ≤90%;
4. Seismic intensity: Not exceeding 8 degrees;
5. Installation site: The surrounding air should not be significantly contaminated by corrosive or flammable gases, water vapor, etc
Product Specifications
| Project | Unit | Parameter | ||
| High pressure side |
Rated frequency | Hz | 50/60 | |
| Rated voltage | KV | 6/10/35 | ||
| Maximum operating voltage | KV | 6.9/11.5/40.5 | ||
| Rated current | A | 400/630/1250 | ||
| Transfer current | A | 1200-3150 | ||
| Rated short-circuit switch current (current-limiting fuse) | KA | 25-50 | ||
| Transformer | Rated voltage | KV | 50 | |
| Rated capacity | KVA | 30-2000 | ||
| Tap range | % | ±2*2.5/±5% | ||
| Connection group | Yyn0/Dyn11 | |||
| Impedance voltage | % | 4.4/5.6/8 | ||
| Low pressure side |
Rated voltage | V | 220/380/690/800 | |
| Main circuit rated current | A | 50-4000 | ||
| Branch current | A | 5-800 | ||
| case | Protection level | IP23/IP33/IP65 | ||
| Noise level(dB) | ≤50 | |||
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