Special Transformer Solutions for Harsh Environments - Customized High Adaptability
Rockwill
17yrs 700++
staff 108000m²+m² US$150,000,000+ China
Ⅰ. Environment-Tolerant Custom Design
- Extreme Temperature Adaptability
- F-class insulation materials designed with H-class thermal rise margin.
- Enhanced cooling: Stepped radiators + optimized copper-tube oil ducts; optional IP55-rated intelligent forced-air cooling system (40% thermal control efficiency boost).
- Cold-start technology: Silicone-modified insulating oil (solidification point ≤ -60℃) with anti-condensation electric trace heating.
- Pre-heating modules for critical components (optional), ensuring safe startup at -50℃.
- High-Temperature Operation (≥150℃)
- Low-Temperature Operation (-40℃ to -60℃)
- High-Altitude Reinforcement (≥3,000m)
- Insulation distance increased by 20% (per IEC 60076-15), CTI≥600 epoxy for solid insulation.
- Upgraded external insulation: Extended-shed bushings; SF6 gas insulation for dry-type transformers (withstand strength ≥40 kV/cm).
- Salt Spray/Heavy Pollution Protection
- Triple Anti-Corrosion System:
|
Layer |
Solution |
Standard |
|
Enclosure |
IP55 stainless steel + triple-layer heavy-duty epoxy coating (5,000h salt spray test) |
ISO 12944 C5-M |
|
Internal |
Nitrogen-pressurized sealing (N₂ purity ≥99.999%) |
IEC 60076-11 |
|
Terminations |
Silicone-sealed terminal box + silver-plated copper terminals |
IEC 60529 |
Ⅱ. Explosion Safety System
- Certified for Explosive Atmospheres (Chemical/Mining):
- Ex d IIC T4 flameproof enclosure (ATEX 2014/34/EU compliant), flamegap ≤0.1mm.
- Safety interlock: Pressure-release valve + instant trip breaker (response ≤2ms), grounding resistance ≤0.5Ω.
- Intrinsic Safety Monitoring:
- Ex ia online monitoring (partial discharge + DGA), signals isolated via Zener barriers.
Ⅲ. Seismic Reinforcement
- Dynamic Structural Simulation
- FEA seismic response spectrum per IEEE 693 (High Level), peak acceleration 0.5g.
- Displacement-Tolerant Design
- Internals: Honeycomb support frame + axial winding compression (displacement tolerance ≥±15mm).
- External: High-strength viscous dampers (damping coefficient ≥30%), withstands seismic intensity IX.
Ⅳ. Target Performance & Validation
|
Parameter |
Target |
Verification Method |
|
Environmental Range |
-60℃~+65℃, 100%RH |
IEC 60068-2 test series |
|
MTBF |
≥300,000 hours |
IEC 60721-3-4 |
|
Seismic Resistance |
IEEE 693 Severe Level |
3-axis shaker table test |
|
Explosion Certification |
ATEX/IECEx dual cert |
EN 60079-0/1 |
Final Efficacy:
- Failure rate <0.1 incidents/year in extreme environments.
- Service life extended to 35 years.
- O&M costs reduced by 45%.
07/28/2025
Recommended
Application of New DC Circuit Breakers in Short-Circuit Fault Protection
I. IntroductionWith the rapid advancement of modern information technology, intelligence has become a major trend in the development of industrial equipment. In the field of high-voltage switching, intelligent circuit breakers—as critical control components in power systems—form the foundation for automation and intelligence in power systems. This study focuses on an intelligent DC circuit breaker based on single-chip microcomputer (SCM) technology, emphasizing its practical applica
Application Solutions of DC Circuit Breakers in the New Energy Sector
I. OverviewWith the rapid development of new energy power generation and electric vehicle (EV) charging facilities, DC systems have imposed higher requirements for safety protection equipment. Traditional AC circuit breakers cannot effectively interrupt DC fault currents, creating an urgent need for specialized DC circuit breaker solutions. This solution provides professional protection configurations for two major application scenarios: photovoltaic (PV) power generation systems and EV chargin
Low-Cost, Low-Loss DC Arc-Free Circuit Breaker Solution for Rail Transit
I. Solution OverviewThis solution addresses the protection needs of DC systems (particularly rail transit traction power supply) against short-circuit faults by proposing a DC circuit breaker solution based on optimized mechanical breaker structure. It achieves arc-free interruption through capacitor voltage control, combining low on-state loss and high reliability, making it suitable for frequent operation scenarios.II. Core PrincipleUtilizes a fast mechanical switch topology combined with p
PEBS Circuit Breaker DC Safety Solution
Solution OverviewIn modern renewable energy power systems, such as photovoltaic (PV) power generation and energy storage systems, fault protection on the DC side is a core element for ensuring safe, stable, and efficient operation. The Projoy PEBS series DC miniature circuit breakers are specifically designed for such applications, providing a comprehensive and efficient solution integrating arc control, overload protection, and short-circuit protection. This solution aims to deliver the highes
About
Rockwill
Wenzhou Rockwill Electric Co., Ltd.
17yrs 700++
staff 108000m²+m² US$150,000,000+ China
