Delegation Led by Director Wu Guosheng of the Quzhou Municipal People’s Congress Standing Committee Visits Kerun for a Special Inspection on Sci-Tech Innovation
From September 16 to 17, a delegation headed...
Oct 24, 2025
110kV oil-immersed Power Transformer
Overview
3500kV oil-immersed Power Transformer
The iron core of the 1l0kV oil immersed electric transformer is made of high-quality oriented silicon steeland multi-stage stepped stacking, and surface coated with curing paint. lt has the characteristics of low lossand low noise. The coil adopts internal and external brace structure, and the high-strength cardboard tubestructure is adopted between the coil and the iron core and between the coil, so as to effectively ensure theshort-circuit impact resistance. The wall of oil tank adopts a molding bending corrugated structure toincrease the mechanical strength and has a beautiful and elegant appearance. A comprehensive positioningstructure is adopted between the body and the fuel tank to ensure transportation and stability.
Trusted by world-class brands & organizations of all sizes
Trusted by world-class brands & organizations of all sizes
Technical Parameters
Feature
Structure
Diagram
QC & Guarantee
FAQs
Ultimate Guide
QC & Guarantee
Market Orientation and Service Commitment
In response to fierce market competition and to meet customer demands, our company adheres to a market-oriented approach and a customer-centric philosophy. We have earned widespread recognition from our clients through efficient, comprehensive services and superior product quality.Our Commitments
- Product Lifespan Guarantee: The operational lifespan of our transformers is no less than 30 years.
- Strict Quality Control:
- Upon receiving bid documents, we promptly initiate the evaluation process to ensure all customer requirements are fully addressed.
- We carefully select certified suppliers and strictly follow quality management standards to control and inspect raw materials and components.
- We produce high-quality, customer-satisfactory parts in full compliance with contract and technical agreement requirements.
- After-Sales Service Commitment:
- All performance indicators and technical specifications of our transformers meet or exceed national standards.
- Within 3 years of installation and commissioning, if any oil leakage occurs due to manufacturing defects in oil-immersed transformers, we will repair it at no cost.
- For any critical component defects identified during production or issues discovered during installation, we prioritize resolution to meet project timelines, followed by thorough responsibility analysis and necessary repairs or replacements.
- We welcome customers to supervise the manufacturing process at our facility and will provide full support.
After-Sales Support
We offer comprehensive after-sales services, including free guidance for installation and commissioning. After the product is operational, if the customer requires support, our service team will respond promptly:- Arrival on-site within 24 hours for locations within 300 km. (Domestic)
- Arrival on-site within 48 hours for locations beyond 300 km. (Domestic)
International Service Methods
Remote Technical Assistance Our service team provides 24/7 online technical support, including video calls, troubleshooting guides, and documentation, ensuring immediate assistance regardless of time zones. Detailed remote diagnostics can be conducted using customer-provided data or live visual inspections. On-Site Support For complex issues, we dispatch experienced technicians to the customer site promptly, adhering to the agreed international response timelines. On-site services include installation guidance, commissioning, maintenance, and repairs. Dedicated Service Representatives Each international client is assigned a dedicated service representative to coordinate all aspects of after-sales support, including issue resolution and regular follow-ups. Local Service Partnerships We collaborate with certified local service partners in key markets to ensure faster response times and efficient support. These partners are fully trained in our products and processes to uphold our quality standards. Regular Follow-Up Visits Post-installation, we perform scheduled follow-up visits, either in person or virtually, to monitor product performance and address customer feedback. This proactive approach ensures optimal operation and customer satisfaction. Why This Matters Our comprehensive international service system combines swift response, advanced technical support, and localized expertise to provide our global clients with reliable and professional after-sales services. We are committed to building lasting partnerships through consistent support and excellence.What is Kerun Intelligent Control’s core business scope?
It focuses on R&D, production and sales of power transmission & distribution equipment, new energy equipment and smart grid solutions, including transformers, high/low-voltage switchgear, energy storage containers, prefabricated substations and charging piles.
What key qualifications and honors has Kerun obtained?
It holds titles such as National High-Tech Enterprise, "Specialized, Sophisticated, Innovative Little Giant" Enterprise (Ministry of Industry and Information Technology), and National Demonstration Unit for Enterprise Integrity Construction.
Which international/national standards do Kerun’s products comply with?
All products meet international and national standards, including IEC (International Electrotechnical Commission), GB (China National Standards) and ANSI/IEEE (American National Standards Institute/IEEE).
What after-sales service guarantees does Kerun provide?
It offers 1-year free warranty for products; responds to quality issues within 1 hour; dispatches on-site personnel within 24 hours (in-province) and 48 hours (out-of-province); and provides remote monitoring for key equipment points.
Where are Kerun’s products applied globally?
Domestically, its products cover all provinces in China; internationally, they are exported to Southeast Asia, Africa and other regions. They are used in projects like Bangladesh National Grid and Zimbabwe National Grid transformation.
Does Kerun offer customized solutions for specific customer needs?
Yes. It provides tailor-made equipment solutions (e.g., for wind power, photovoltaic or industrial scenarios) and uses SolidEdge 3D electrical design to optimize product structure and performance.
What is Kerun’s annual production capacity for core products?
It has an annual production capacity of 5 million kVA for transformers and 15,000 units for high-voltage switchgears, which can fully meet the demand for large-scale projects and batch orders.
What is the process for Kerun to provide customized equipment solutions?
First, it communicates with customers to confirm scenario needs (e.g., wind power, industrial load); then uses SolidEdge 3D electrical design software to optimize product structure and performance; finally, conducts prototype testing and batch production after customer confirmation.
What environmental protection measures are integrated into Kerun’s products?
Transformer products meet GB20052-2020 energy efficiency standards, with energy loss 10% lower than national requirements; high-voltage switchgears adopt eco-friendly insulation gases (e.g., C4F7N mixed gas) to replace traditional SF6, reducing environmental impact.
What R&D resources does Kerun have to support product innovation?
It has established a Zhejiang Provincial Postdoctoral Workstation, and cooperates with Zhejiang University of Technology and Hangzhou Dianzi University to build R&D platforms; it also has a professional team focusing on smart grid and new energy technology research.
What forms of cooperation does Kerun have with international giants like ABB and GE?
The cooperation covers two core areas: one is joint R&D of power equipment technology to align product standards with international mainstream; the other is participation in the global supply chain of ABB and GE to provide key components for their overseas projects.
Besides basic warranty, what additional after-sales services does Kerun offer?
It provides free remote monitoring of key equipment points for 3 years (to predict faults in advance); offers regular on-site maintenance guidance (twice a year for large projects); and provides lifelong technical consultation and spare parts supply.
Does Kerun’s product certification cover both domestic and international markets?
Yes. Domestic certifications include China Energy Conservation Product Certification and CQC certification; international certifications cover IEC (International Electrotechnical Commission), ANSI/IEEE (American standards), and CE (European Union standards), ensuring smooth access to global markets.
Does Kerun accept small-batch or urgent orders for special equipment?
It accepts small-batch orders (minimum 1 set for customized products) and provides urgent order support: for emergency power projects (e.g., disaster relief, temporary infrastructure), it can shorten the production cycle by 30% and prioritize delivery.
What is Kerun Intelligent Control’s core business scope?
It focuses on R&D, production and sales of power transmission & distribution equipment, new energy equipment and smart grid solutions, including transformers, high/low-voltage switchgear, energy storage containers, prefabricated substations and charging piles.
What key qualifications and honors has Kerun obtained?
It holds titles such as National High-Tech Enterprise, "Specialized, Sophisticated, Innovative Little Giant" Enterprise (Ministry of Industry and Information Technology), and National Demonstration Unit for Enterprise Integrity Construction.
Which international/national standards do Kerun’s products comply with?
All products meet international and national standards, including IEC (International Electrotechnical Commission), GB (China National Standards) and ANSI/IEEE (American National Standards Institute/IEEE).
What after-sales service guarantees does Kerun provide?
It offers 1-year free warranty for products; responds to quality issues within 1 hour; dispatches on-site personnel within 24 hours (in-province) and 48 hours (out-of-province); and provides remote monitoring for key equipment points.
Where are Kerun’s products applied globally?
Domestically, its products cover all provinces in China; internationally, they are exported to Southeast Asia, Africa and other regions. They are used in projects like Bangladesh National Grid and Zimbabwe National Grid transformation.
Does Kerun offer customized solutions for specific customer needs?
Yes. It provides tailor-made equipment solutions (e.g., for wind power, photovoltaic or industrial scenarios) and uses SolidEdge 3D electrical design to optimize product structure and performance.
What is Kerun’s annual production capacity for core products?
It has an annual production capacity of 5 million kVA for transformers and 15,000 units for high-voltage switchgears, which can fully meet the demand for large-scale projects and batch orders.
What is the process for Kerun to provide customized equipment solutions?
First, it communicates with customers to confirm scenario needs (e.g., wind power, industrial load); then uses SolidEdge 3D electrical design software to optimize product structure and performance; finally, conducts prototype testing and batch production after customer confirmation.
What environmental protection measures are integrated into Kerun’s products?
Transformer products meet GB20052-2020 energy efficiency standards, with energy loss 10% lower than national requirements; high-voltage switchgears adopt eco-friendly insulation gases (e.g., C4F7N mixed gas) to replace traditional SF6, reducing environmental impact.
What R&D resources does Kerun have to support product innovation?
It has established a Zhejiang Provincial Postdoctoral Workstation, and cooperates with Zhejiang University of Technology and Hangzhou Dianzi University to build R&D platforms; it also has a professional team focusing on smart grid and new energy technology research.
What forms of cooperation does Kerun have with international giants like ABB and GE?
The cooperation covers two core areas: one is joint R&D of power equipment technology to align product standards with international mainstream; the other is participation in the global supply chain of ABB and GE to provide key components for their overseas projects.
Besides basic warranty, what additional after-sales services does Kerun offer?
It provides free remote monitoring of key equipment points for 3 years (to predict faults in advance); offers regular on-site maintenance guidance (twice a year for large projects); and provides lifelong technical consultation and spare parts supply.
Does Kerun’s product certification cover both domestic and international markets?
Yes. Domestic certifications include China Energy Conservation Product Certification and CQC certification; international certifications cover IEC (International Electrotechnical Commission), ANSI/IEEE (American standards), and CE (European Union standards), ensuring smooth access to global markets.
Does Kerun accept small-batch or urgent orders for special equipment?
It accepts small-batch orders (minimum 1 set for customized products) and provides urgent order support: for emergency power projects (e.g., disaster relief, temporary infrastructure), it can shorten the production cycle by 30% and prioritize delivery.
Ultimate Guide
Comprehensive Guide to Kerun’s Core Power Equipment
This guide is a focused resource for power industry professionals, engineers, and new energy project managers, covering the key principles, tech highlights, design focus, and compliance standards of Kerun’s core products: 220kV-and-below oil-immersed power transformers, energy storage containers, prefabricated substation cabins, and 10kV-220kV high-voltage switchgear.
1-hour
after-sales response
after-sales response
MIIT
"Specialized & Innovative"
Enterprise
"Specialized & Innovative"
Enterprise
Complies with
IEC/GB/ANSI
IEC/GB/ANSI
5M kVA annual
transformer capacity
transformer capacity
Why Choose us ？
Reliable in quality, global in delivery.
Kerun Intelligent Control is a national high-tech enterprise and a “Specialized, Sophisticated, Innovative Little Giant” enterprise certified by the Ministry of Industry and Information Technology. It is a core supplier of State Grid and China Southern Power Grid, with products included in the recommended catalog for new energy (wind/photovoltaic) station construction. It has also won the title of “National Enterprise Integrity Demonstration Unit” and is a long-term strategic partner of Fortune 500 companies such as ABB and GE.
Why Choose us ？
Reliable in quality, global in delivery.
Kerun Intelligent Control is a national high-tech enterprise and a “Specialized, Sophisticated, Innovative Little Giant” enterprise certified by the Ministry of Industry and Information Technology. It is a core supplier of State Grid and China Southern Power Grid, with products included in the recommended catalog for new energy (wind/photovoltaic) station construction. It has also won the title of “National Enterprise Integrity Demonstration Unit” and is a long-term strategic partner of Fortune 500 companies such as ABB and GE.
1-hour after-sales response
MIIT "Specialized & Innovative"
Enterprise
Complies with IEC/GB/ANSI
5M kVA annual transformer capacity
Our Project
Kerun’s products not only dominate the domestic market by supporting key projects in smart grid, new energy and urban infrastructure nationwide, but also are exported to over 20 countries and regions in Southeast Asia, Africa and Latin America. They provide reliable solutions for industries such as power, transportation, petrochemicals, metallurgy and residential/commercial infrastructure.
