High-Performance Dry Transformer For EV Charging Stations
Products Description
Precision Efficiency Design & Cost Optimization
Ultra-Low No-Load Loss: 775W (9% below China Class 1 efficiency limit of 850W), reducing standby consumption by 9% and saving 6,800 kWh annually in no-load energy.
Controlled Load Loss: 5,290W (3.8% lower than the Class 1 limit of 5,500W), delivering 12% higher overall efficiency. Ideal for 24/7 operations (e.g., food processing, cold chain logistics), saving over CNY 45,000/year in electricity costs.
1.0% No-Load Current: Minimizes reactive power demand during light-load conditions, reducing penalties for power factor regulation fees.
Stable 4% Short-Circuit Impedance for System Reliability
Standardized 4% Impedance: Matches protection device settings (circuit breakers, fuses) in 6/10kV systems, limiting fault current impact and equipment damage risks.
Robust Short-Circuit Withstand: Passes GB 1094.5 standard test (25kA/2s). Axially compressed winding structure ensures zero deformation, enabling immediate post-fault operation without maintenance.
Grid Compatibility: Tolerates ±10% voltage fluctuations and ≤5% harmonic distortion (e.g., solar PV grid connections), ensuring long-term stability.
Fully Sealed Moisture-Proof Construction for Harsh Environments
IP55 Protection: Vacuum-cast epoxy resin + dual-layer sealing rings resist dust, water, 95% humidity, and salt spray (ISO 12944 C3).
Low-Temperature Operation: Starts reliably at -25°C without preheating, with partial discharge <5pC (verified per IEC 60076-11).
Bio-Protection: 304 stainless steel mesh + silicone seals at cable entries, UL 94 V-0 flame-retardant certified, preventing rodent/insect intrusion.
Intelligent Thermal Control & Silent Operation
Dual-Mode Cooling System:
Natural Cooling (≤60% load): 3D airflow channels achieve ≤65K temperature rise (vs. 100K national standard) with ≤45dB noise (library-level quietness).
Forced Air Cooling (>60% load): Brushless DC fans with zone-specific speed control stabilize temperature rise ≤80K while maintaining ≤55dB noise (vs. 65dB standard).
Over-Temperature Protection: PT100 sensors + auto fan control trigger alarms at 130°C (adjustable), preventing insulation degradation.
Simplified Maintenance & Longevity Assurance
Modular Plug-and-Play Design: Pre-assembled terminals and standardized base reduce on-site installation to ≤4 hours (vs. 8 hours for traditional units).
10-Year Maintenance-Free Promise: Fully sealed, oil-free epoxy structure ensures ≥30-year lifespan. Core components (core, windings) carry a 10-year warranty.
Nationwide Service Network: 200+ service centers guarantee 48-hour emergency response, with annual failure rate <0.2% and 50% lower O&M costs.
Product Specification
| Model number | SCB18-630-Nx 1 |
| Rated volume quantity(KVA) | 630 |
| High voltage(KV) | 6/6.3/10/10.5 |
| High voltage tap range(KV) | +3/-1/±5%/±2×2.5% or ×2.5% |
| Low voltage(KV) | 0.4 |
| Connection group label | Dyn11or Yyn0 |
| No-load loss(W) | 775 |
| Load loss(W) | 5290 |
| No-load electricity(%) | 1.0 |
| Short circuit resistance(%) |
4 |
Products Export
Foreign exhibition
International Exhibition Validates Strength
As a reputable enterprise in China's power equipment manufacturing sector, Kechang Electric showcased its core product portfolio and technical solutions at the 2024 Tashkent International Energy Exhibition in Uzbekistan, reinforcing our presence in Central Asian markets.
Exhibition Highlights
• Professional Recognition: Engaged in technical exchanges with over 80 professionals from Central Asian power utilities and industrial clients
• Scenario Verification: Demonstrated product adaptability in extreme temperature conditions through live equipment presentations
• Service Commitment: Established technical communication channels with local partners during the event
Client Testimonial
"Kechang Electric's climate-specific protection designs and service framework impressed us during in-depth discussions at the exhibition."
- Procurement Manager, Industrial Zone, Uzbekistan
Our Advantages
✓ Global Expertise: Products deployed across 6 Central Asian countries, serving 50+ projects
✓ Rapid Support: Bilingual technical assistance (English/Russian) with solutions delivered within 48 hours
✓ Quality Assurance: All equipment undergoes rigorous cyclic testing at -30℃ to 50℃
International Clients Inspecting Our Facilities
Uzbekistan customers visit the factory of transformer
Nepalese Clients Participate in Power Control Equipment Testing
Pakistani Clients Tour Our Product Showroom
How we started
2006-2010
2006-2010 Foundation Period | Embracing International Standards
Strategic Positioning: Strategic manufacturing partner for Fortune 500 power industry giants
Key Milestones:
✔️ Delivered 1,200+ sets of complete power equipment as OEM supplier for listed companies
✔️ Established 217 process standards aligned with client specifications
✔️ Achieved ISO 9001 certification with 0.12% defect rate (industry avg: 0.35%)
2010-2012
2010-2012 Transformation Era | Pioneering Independent Branding
Strategic Shift: Transition from OEM manufacturing to branded operations
Key Achievements:
✔️ Obtained National Industrial Product License
✔️ First-year branded product sales: ￥38M with 43% repeat order rate
✔️ Industry-first lifecycle tracking system enabling 30-year data traceability
Technical Milestones:
► S11-M oil-immersed transformer certified Class 1 energy efficiency (GB 24790)
► Sheet metal precision improved from ±2mm to ±0.8mm
2012-2018
2012-2018 Expansion Era | Building Industry Ecosystems
Strategic Focus:
Capacity Expansion × Technical Depth × Global Integration
|
Dimension |
Achievements |
|
Capacity |
Built 43,000 sq.m digital factory (170% capacity increase) |
|
Technology |
7 invention patents + 12 utility model patents (2 national standards drafted) |
|
Partnership |
Key supplier to ABB/Schneider APAC (service network: 29 provinces) |
2018-Present
2018-Present | Innovating an Era: Interpreting China's Smart Manufacturing
Industry 4.0 Smart Factory:Achieved 92% automation in key processes.
Hi-B Steel Adoption: Fully integrated high-permeability grain-oriented silicon steel.
Global Certification & Reach: KEMA-certified products entering 18 markets across the EU, Southeast Asia, and beyond.
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