Transformer Manufacturer

Reliable Transformer Manufacturer

Since 2004, Kerun Intelligent Control has provided low, medium, and high-voltage transformers worldwide. Our products, including dry-type and oil-immersed transformers, are UL, CE, IEC, and ISO certified, with fast delivery.

Since 2004, Kerun Intelligent Control has been manufacturing low-voltage, medium-voltage, and high-voltage transformers for various industries worldwide. Over the past two decades, we have earned the trust of more than 1,000 global customers and possess extensive experience in local projects.

Transformer Type: Dry-Type, Oil-immersed, Distribution Transformer, Pad Mounted Transformer, Transformer Substation, and more.
UL, CE, IEC, ISO certified. Compliant with international standards and industry certifications.

One-Stop selection for transformers of diverse capacities and voltage levels.
Delivered faster than you expect!

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We Customize Your Transformer

Kerun oil-immersed power transformers are designed for a wide range of applications, including industrial distribution, power transmission networks, utility systems, and renewable energy integration. The product covers medium to high voltage levels and can be customized according to specific engineering and operational requirements. The following specifications outline the typical ranges and configurations:

Rated Voltage:
Primary (High-Voltage Side)

Standard rated voltage range: 10 kV – 220 kV
Common ratings: 10 kV, 20 kV, 33 kV, 35 kV, 66 kV, 110 kV, 132 kV, 150 kV, 220 kV
Rated frequency: 50 Hz or 60 Hz
Optional multi-tap configurations are available for voltage regulation flexibility

Secondary (Low-Voltage Side)

Standard voltage ratings: 0.4 kV, 6 kV, 6.3 kV, 10 kV
Optional non-standard levels: 0.69 kV, 3.3 kV, or customized values on request
Rated frequency: 50 Hz or 60 Hz

Power Ratings:

Small to medium capacity range: 800 kVA – 6,300 kVA, suitable for industrial, utility, and general distribution networks
Medium to large capacity range: 3 MVA – 31.5 MVA, widely used in substations and renewable power plants
Special high-capacity models: up to 40 MVA – 100 MVA or higher, ideal for main transformer systems and heavy industrial loads
Dual- and triple-winding configurations are available for specific grid applications

Typical Combinations:

35 kV / 10 kV / 0.4 kV three-winding structure
110 kV / 10.5 kV, 132 kV / 33 kV, or 220 kV / 35 kV two-winding configurations
33 kV / 11 kV / 0.4 kV and 66 kV / 11 kV / 3.3 kV custom combinations for project-specific designs

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220 kV Oil-Immersed Power Transformer

110 kV Oil-Immersed Power Transformer

66 kV Oil-Immersed Power Transformer

35 kV oil-immersed Transformer

Stock Details of Kerun Transformer

The following table presents the current Stock details of Kerun Transformer. For immediate shipment or further information, please do not hesitate to contact us.

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Type	Primary Voltage	Secondary Voltage	Rating/Capacity	QTY
3 Phase Transformer	35kV	0.415kV	2500kVA	12
	11kV	0.4kV	2000kVA	15
	10kV	0.4kV	1250kVA	20
	33kV	0.415kV	3150kVA	8
	20kV	0.4kV	1600kVA	10
Dry Type Transformer	10kV	0.4kV	1250kVA	10
Dry Type Transformer	35kV	0.4kV	2500kVA	5
1 Phase Transformer	14.4kV	120/240V	100kVA	30
1 Phase Transformer	7.2kV	120/240V	50kVA	45

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CE/UL Switchgear & Switchboard

Besides transformers, we also manufacture low and medium voltage switchgear. As a leading switchgear manufacturer, we prioritize innovation and reliability in every product.

Reliable Performance: Ensures uninterrupted power distribution and protection for critical systems.
Fully Certified: Compliant with IEC, GB, and ANSI/IEEE standards; UL-ready components.
Custom-Built Solutions: Tailored designs to fit specific project requirements.
Enhanced Safety Features: Built with advanced protection mechanisms for operational safety.

Our annual production capacity exceeds 15,000 sets of switchgear and transformers of various VA ratings, enabling us to meet the diverse purchasing volume requirements of a wide range of clients.

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XGN17-40.5 Indoor AC Box Type Fixed High Voltage Switchgear

XGN2-12 12kV Indoor High Voltage Ac Box Type Switchgear

SRM 1224kV Fully Insulated Fully Sealed Common Box Type Ring Network Switchgear

SRM 12kV 24kV Fully Insulated Fully Sealed Common Box Type Ring Network Switchgear

ABOUT KERUN

Building Power, Building Trust

Founded in 2004, Kerun Intelligent Control has focused on the power industry for nearly 20 years, dedicated to smart grid innovation and global low-carbon transformation. We boast a professional R&D team and a multi-level, cross-disciplinary R&D platform, including Zhejiang Province Enterprise Technology Center, Zhejiang Province Enterprise Research and Development Center, Zhejiang Kerun New Energy Charging Pile Research Institute, and Zhejiang Province Postdoctoral Workstation. With over 100 technical patents and 100+ test reports, we continuously drive product innovation to meet advanced demands in power transmission and distribution.

Zhejiang Kerun Intelligent Control Co., Ltd. has an annual production capacity of 5 million kVA transformers and 15,000 high-voltage switchgears. It can manufacture oil-immersed power transformers of 220kV and below, dry-type transformers of 110kV and below, high and low-voltage switchgear assemblies, as well as new energy-related products including energy storage containers, prefabricated substation cabins, and charging piles. Additionally, it produces scenario-specific transformers such as railway traction transformers and rectifier transformers, all of which comply with IEC, GB, and ANSI/IEEE international standards.

Committed to “meeting diverse needs through quality”, Kerun Intelligent Control leverages expert teams to provide : pre-sales consultation & customization, flexible logistics/payment options, and reliable maintenance – ensuring seamless producer-maintainer-customer collaboration.one-stop services

2004

Kerun was founded
25,000

Square meters of facility
350

employees
8,000

sets of monthly production capacity

Service

Krun provides specialized integrated solutions for customers to ensure it meets the customer’s requirement.Engineered Transformer Solutions for a Global Market. Stable, Certified, and Fast delivery