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Help CenterHigh Voltage Fuse for Power Transformer 3.6KV 7.2KV 12KV 24KV 36KV 3.15A~250A IEC 60282-1 Standard
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Jinhua Dika Electrical Equipment Co., Ltd. has been a trusted manufacturer of high-voltage protection devices since establishment. Our High Voltage Fuse for Power Transformer series, covering voltage ratings from 3.6KV to 36KV and current ratings from 3.15A to 250A, is engineered to deliver reliable overcurrent protection for power transformers in medium-voltage distribution systems. Each fuse meets the stringent requirements of IEC 60282-1 standard, ensuring consistent performance under extreme conditions. With an annual export value exceeding US$1 million and a dedicated production team of 11-50 skilled employees, we offer both standard and customized solutions to meet diverse global market needs.
Key Product Features & Technical Specifications
Our high-voltage fuses are designed with precision to safeguard power transformers against short circuits and overloads. Below are the core features that distinguish our product in the market:
- Wide Voltage Coverage: Available in six voltage classes – 3.6KV, 7.2KV, 12KV, 24KV, 36KV – suitable for various transformer ratings.
- Broad Current Range: Rated from 3.15A up to 250A, covering most common transformer protection requirements.
- IEC 60282-1 Compliance: Strictly manufactured according to the international standard for high-voltage fuses, ensuring interchangeability and safety.
- Robust Construction: High-grade porcelain body with quartz sand arc-quenching medium provides excellent breaking capacity and thermal stability.
- Low Power Dissipation: Optimized design minimizes energy loss during normal operation, improving system efficiency.
- Time-Current Characteristics: Engineered to coordinate with transformer inrush and withstand temporary overcurrents without nuisance tripping.
- Environmentally Adaptable: Operating temperature range from -25°C to +55°C, suitable for indoor and outdoor substations.
- Compact Dimensions: Space-saving design allows easy installation in standard fuse holders and switchgear.
Technical Parameters (Table)
| Voltage Rating (KV) | Current Rating Range (A) | Breaking Capacity (KA RMS) | Length (mm) | Weight (kg) |
|---|---|---|---|---|
| 3.6 | 3.15 - 250 | 50 | 292 | 1.2 |
| 7.2 | 3.15 - 200 | 40 | 292 | 1.3 |
| 12 | 3.15 - 160 | 31.5 | 442 | 2.0 |
| 24 | 3.15 - 100 | 25 | 537 | 3.0 |
| 36 | 3.15 - 80 | 20 | 620 | 3.8 |
Note: Breaking capacity and dimensions are typical values. Custom configurations are available upon request.
Benefits for Customers
- Enhanced System Reliability: Precisely coordinated fusing prevents transformer damage from sustained faults, reducing downtime.
- Cost-Effective Protection: Compared to circuit breakers, our fuses offer a compact and economical solution without compromising safety.
- Easy Maintenance: Simple replacement procedure with standardized fuse links minimizes skilled labor requirements.
- Global Compatibility: Designed to IEC standards, ensuring seamless integration with transformers from all major manufacturers.
- Long Service Life: Corrosion-resistant contacts and robust ceramic housing ensure decades of reliable operation in harsh environments.
Trust & Credibility
With Jinhua Dika Electrical Equipment Co., Ltd., you benefit from a manufacturer that has shipped products to over 15 countries across North America, South America, Europe, Asia, Africa, and Oceania. Our facility in Jinhua, Zhejiang is equipped with modern testing equipment, and our quality management system holds certifications including ISO9001, ISO14000, OHSAS18001, and others that assure consistent production. We maintain an annual export value of US$1–1.5 million, reflecting our strong presence in the global market. Every fuse undergoes routine testing for power frequency withstand voltage, resistance, and time-current characteristics before shipment. We offer flexible shipping from ports like Shanghai, Ningbo, Tianjin, and Guangzhou. Contact us today for a competitive quotation or custom voltage/current combination that meets your specific transformer protection needs.
Frequently Asked Questions
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Q: What is the difference between backup and general-purpose fuses? Can this fuse be used for both?
A: Our fuse is designed as a backup type for transformer protection, meaning it is intended to be used with other overcurrent protection devices for full-range fault clearing. For general-purpose applications, please consult our technical team for appropriate selection. -
Q: Does the fuse come with a striker or indicator for blown operation?
A: Standard versions do not include a striker, but an optional indicator version can be provided upon request for visual fault indication. -
Q: Can I get fuses for voltages not listed, such as 17.5KV or 40.5KV?
A: While our standard range covers 3.6KV to 36KV, we can develop custom voltage ratings subject to order quantity. Please contact us with your requirements. -
Q: What is the typical lead time for standard fuses?
A: For standard ratings and quantities (up to 200 pcs), lead time is 15–20 working days after order confirmation. Larger orders may require 25–30 days. -
Q: Are these fuses suitable for outdoor use (e.g., pole-mounted transformers)?
A: Yes, the ceramic body and sealed construction make them suitable for outdoor use under normal environmental conditions. For extreme humidity or corrosive atmosphere, we recommend additional protective coating which can be added as an option. -
Q: What packaging do you use for export shipments?
A: Each fuse is individually packed in a plastic sleeve and then placed in a sturdy export carton with foam dividers. Crating is also available for fragile high-voltage units. -
Q: Do you provide testing certificates for each batch?
A: Yes, we can provide a Certificate of Conformity (CoC) along with test reports for routine tests. Type test reports are available upon request. -
Q: How do I select the correct fuse rating for my transformer?
A: Generally, the fuse rating should be 1.3 to 1.5 times the transformer full-load current, depending on the transformer inrush characteristics. Our technical support team can assist you with proper coordination studies.
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