AXIAL FANS for transformer cooling

Product catalog summary

About Us
KONČAR-MES Ltd., a part of the KONČAR Group, specializes in electric motors and drive systems, emphasizing innovation and customer service to maintain its leadership in drive technology.

Technical Specifications
The document details specifications for axial fans used in transformer cooling, including fan type, motor poles, rated speed, airflow, static pressure, power consumption, and sound levels. These fans comply with ISO 5801 and ISO 13348 standards, ensuring high performance and low noise emissions.

Axial Fans for Transformer Cooling
Designed for high airflow and low noise, these fans feature advanced blade aerodynamics and a low-pressure housing design. They offer benefits such as low noise emissions, high efficiency, reliability in various climates, and extended service life. The fans are corrosion-protected and compatible with different mounting orientations.

Fan Designation
The fan designation system includes parameters like fan type, design variant, rotor type, and environmental classification, allowing for extensive configurability to meet specific customer requirements.

Corrosion Protection
Fans are protected against corrosion according to ISO 12944-2, with different classes for various environments. The protection level is determined during the quotation phase.

Standard Design Features
The standard design includes a steel casing with zinc coating, aluminum impeller blades, and stainless steel fasteners. The electric motor is made from aluminum alloy with a PU coating, designed for outdoor use with a wide operating temperature range.

Options and Customization
Fans can be customized with adjustable blade pitch, different lengths, and mounting dimensions. Additional options include various voltages, motor certifications, and thermal protection features.

New Sickle Blade Design
KONČAR-MES has developed new sickle-shaped blades for improved efficiency and noise reduction, allowing for angle adjustments in 5° increments to enhance performance customization.

Technical Data
Detailed technical data for various fan models, including airflow rates, power consumption, and sound levels, is provided for informational purposes.

Overview
The document provides detailed technical specifications and benefits of the VAAZ C Series axial fans, designed for transformer radiator cooling applications, offering high static efficiency and reliability in outdoor environments.

Specifications
The VAAZ C Series fans range from 470 mm to 1250 mm in diameter, with aluminum blades and operating temperatures between -30°C and +55°C. They are compatible with various voltage and frequency ranges, featuring single-phase and three-phase asynchronous motors with rainproof protection.

Certifications
The fans are equipped with ETL-approved motors conforming to UL and CSA safety standards, meeting North American compliance requirements, including OSHA, RoHS, and CE standards, and are manufactured under ISO 9001 Quality Standards.

Benefits
Key advantages include low vibration and acoustic output, extended operational lifespan, and minimal maintenance requirements. The fans are optimized for transformer radiator air resistance profiles and are fully North America-ready.

EC Motors and Technology
EC motors eliminate the need for magnets, reducing supply chain dependencies and enhancing environmental sustainability. They offer superior thermal performance, simplified maintenance, and precise speed control, leading to optimized energy efficiency and quieter operation.

Case Study
A comparative analysis shows that EC fans maintain lower transformer operating temperatures, stabilize thermal conditions, prevent hot spot formation, and enhance overload handling capacity, offering significant energy savings and improved transformer efficiency.

Technical Characteristics
Detailed control characteristics for VAAZ EC 800 and VAAZ EC 1000 models include airflow regulation, mechanical protection, and temperature resilience, with variable speed options and versatile regulation through 0-10V input or modbus interface.

Conclusion
EC motors utilizing synchronous reluctance technology offer unparalleled efficiency and reliability in transformer cooling, emphasizing the benefits of in-house production for quality assurance and customer confidence.

Packaging Specifications
Details on wooden box and frame dimensions and weights for various pallet sizes are provided, along with the number of pieces per pallet.

Product Specifications
Specifications for three-phase and single-phase electric motors, ATEX electric motors, increased safety "e" motors, and non-sparking devices "n" are outlined, including compliance with IEC standards and various options for customization.

Fan Types
Specifications for axial and centrifugal fans, including sizes, airflow, and static pressure, are provided, with options for ATEX and marine versions.

Contact Information
Address: Fallerovo šetalište 22, HR-10000 Zagreb
Phone: +385 1 3667 278
Email: [email protected]; [email protected]; [email protected]
Website: www.koncar.hr/en/mes

Catalog excerpts

AXIAL FANS for transformer cooling

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ABOUT US KONČAR-MES Ltd., a proud member of KONČAR Group, builds on a legacy exceeding a century. We serve a global customer base with a diverse and robust product portfolio, underpinned by in-house R&D, advanced manufacturing technologies, and top-tier customer service. These elements are the pillars of our long-term strategic vision. Driven by a focused business strategy, we are committed to reinforcing our position among the world’s foremost manufacturers in drive technology. Our strength lies in our skilled and knowledgeable team, especially our engineers, whose technical expertise and innovative...

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Voltage (Tolerance of the rated voltage), Rated frequency (acc. to IEC 60034-1, category B) Performance Testing - Aerodynamic and acoustic test according to standards ISO 5801 and ISO 13348 with protection net on suction and pressure side Manufacturing Tolerances: DIN24166 accuracy class 2

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Our axial fans designed for transformer cooling form an integral part of KONCAR-MES air handling and cooling solutions portfolio. Engineered with a focus on performance, these fans deliver high airflow with low acoustic output, achieved through advanced blade aerodynamics and a purpose-built low-pressure housing design. The integrated casing incorporates an optimized intake mouth, motor support system, and protective mesh for enhanced operational safety and durability. Leveraging decades of in-house experience in the development and production of electric motors and fan assemblies, we ensure...

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AXIAL FANS FOR TRANSFORMER COOLING acc. to IEC 60076-22-6, Corrosion class acc. To EN 12944-2 – Class C4-m, fans for worldwide installation Standard design FAN CASING AND MOTOR SUSPENSION Casing material: Steel sheet with hot-dip galvanized zinc coating, minimum 5 μm; finished with EP+PU coating = 80 μm Motor suspension: Steel sheet with zinc-galvanized surface protection, minimum 10 μm ELECTRIC MOTOR Series: 5AZ, aluminum alloy AlSi12Cu, manufactured by KONČAR-MES, PU coating, 6 μm Mounting configuration: IM B30, Cooling: IC 418 Voltage/Frequency : 400V (±10%) / 50Hz (+3, -5%) Ingress protection:...

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KONČAR MES NEW SICKLE BLADE DESIGN to ensure secure assembly and precise blade positioning. This innovation allows for fine-tuning of fan performance characteristics, with angle adjustment available in defined 5° increments. The MA 1000 sickle blade is supplied as standard on the MA 1000 5-5 25° impeller. In response to evolving customer demands, KONČAR-MES has developed a new generation of sickle-shaped blades, the MA 1000 and MA 800. These blades are engineered to deliver high aerodynamic efficiency, reduced noise emissions, enhanced corrosion resistance, and costeffective performance. In addition...

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AXIAL FANS TYPE VAAZ C 470 & 500Technical data 1

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The performance data above was obtained using the MA 7-7 30° impeller for the 470 model and the MA 7-7 25° impeller for the 500 model. Additional blade angle options are available upon request, including 25°, 28.5°, 30°, 32.5°, and 35°. The technical data provided herein is for informational purposes only and is subject to change without prior notice.

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INLET GRILL OUTLET GRILL VENT. PLUG

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The data above was obtained using the 3H 8-8 impeller with a 45° blade angle.Additional blade angle options are available upon request, including 25°, 30°, 40°, and 50°.

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