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Reliable Power Solutions from Shenheng

Professional manufacturer of medium voltage switchgear, dry and oil immersed transformers, vacuum circuit breakers, and prefabricated substations since 2001.

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About Shenheng Power

Shenheng Power Equipment Co., Ltd. was founded in 2001 and is located in Yueqing City, Zhejiang Province — known as the “capital of China’s electrical appliances.” Situated near the East China Sea and Oujiang River to the south, and Yandang Mountain to the north, our strategic location supports efficient manufacturing and global logistics.

As a professional enterprise, we specialize in the research, development, and production of high and low voltage switch transmission and distribution equipment, including transformers, switchgear, circuit breakers, and complete substation systems. Our products are widely used in power grids, industrial plants, commercial buildings, and renewable energy projects.

2001

Founded

20+

Countries Served

Shenheng Factory

Our Products

High-quality electrical equipment designed for reliability, efficiency, and long-term performance in demanding environments.

35kV Oil Immersed Transformer

35kV Oil Immersed Transformer

High-efficiency oil-cooled transformer for medium voltage power distribution with excellent thermal stability.

  • Rated Voltage: 35kV
  • Cooling Type: ONAN/ONAF
  • Power Range: Up to 25MVA
  • Standard: IEC, GB
Dry Type Transformer

10kV Dry Type Transformer

Epoxy-resin encapsulated transformer ideal for indoor installations with high fire safety requirements.

  • Rated Voltage: 10kV
  • Insulation Class: F/H
  • Capacity: 50kVA - 2500kVA
  • Low Noise & Maintenance-Free
Current Transformer

Current Transformer (CT)

Precision measurement and protection CTs for accurate current monitoring in switchgear systems.

  • Rated Voltage: Up to 35kV
  • Accuracy Class: 0.2S, 0.5, 5P, 10P
  • Burden: 5VA - 30VA
  • Outdoor & Indoor Types Available
Vacuum Circuit Breaker

12kV Indoor Vacuum Circuit Breaker

High-reliability VCB for KYN28 switchgear with long mechanical life and stable arc quenching.

  • Voltage: 12kV
  • Breaking Capacity: 25kA - 31.5kA
  • Rated Current: 630A - 3150A
  • Spring Operated Mechanism
KYN28 Switchgear

KYN28-12 Medium Voltage Switchgear

Metal-enclosed armored switchgear for safe and reliable power distribution at 12kV.

  • Voltage: 12kV / 24kV
  • Rated Current: 630A - 3150A
  • Breaking Capacity: 25kA - 31.5kA
  • IEC 62271 Certified
Prefabricated Substation

American Type Prefabricated Substation

Compact, factory-assembled substation for outdoor installation with integrated transformer and switchgear.

  • Voltage: 10/0.4kV
  • Transformer Type: Oil-Immersed
  • Protection: IP54 Enclosure
  • Customizable Configurations
Potential Transformer

Potential Transformer (PT)

High-accuracy voltage transformer for metering and protection applications in MV systems.

  • Rated Voltage: 10kV, 20kV, 35kV
  • Accuracy: 0.2, 0.5, 3P
  • Primary/Secondary: 10000/100V
  • Low Voltage Drop & High Stability
Load Break Switch

HV Load Break Switch

Three-position switch for load interruption, isolation, and earthing in ring main units.

  • Voltage: 12kV, 24kV
  • Rated Current: 630A
  • Fuse Integrated Option
  • Long Mechanical Life (>2000 cycles)
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Why Choose Shenheng?

Engineered for performance, safety, and global compliance.

Certified Quality

ISO 9001, ISO 14001, and IEC-certified manufacturing processes ensure consistent product quality.

High Efficiency

Low no-load and load losses ensure optimal energy efficiency and reduced operating costs.

Global Reach

Products exported to over 20 countries with local technical support and after-sales service.

Customer Focus

Customized solutions, fast response times, and dedicated engineering support for every client.

2001

Year Founded

20+

Countries Served

1000+

Projects Delivered

99.8%

Customer Satisfaction

Frequently Asked Questions

Why should you pay attention to ambient temperature when purchasing a transformer?

Ambient temperature affects the cooling efficiency and load capacity of transformers. Operating above specified temperatures can reduce insulation life and lead to premature failure. Shenheng designs transformers with appropriate temperature rise classes (e.g., 80K, 100K) to ensure reliable performance in various climates.

What is no-load current and no-load loss in transformers?

No-load current is the current drawn by the transformer when the secondary is open-circuited. No-load loss (core loss) occurs due to hysteresis and eddy currents in the core. These parameters affect energy efficiency and operating cost. Shenheng uses high-grade silicon steel to minimize these losses.

What is short-circuit impedance in transformers?

Short-circuit impedance (or impedance voltage) determines the fault current level during a short circuit. It impacts system protection coordination and voltage regulation. Shenheng provides transformers with precise impedance values (e.g., 4%, 6%) as per customer requirements and standards.

Do your products comply with international standards?

Yes, our transformers, switchgear, and electrical components are designed and tested according to IEC, GB, and other international standards. We hold ISO 9001 and ISO 14001 certifications, and our products are widely accepted in global markets.

Get in Touch

Have questions about our products or need a custom solution? Reach out to our team.

Contact Information

No. 261, Central Avenue, Yueqing Economic Development Zone, Wenzhou City, Zhejiang Province, China

+86 13564381033
[email protected]
[email protected]
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