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CUMARK ES SERIES FREQUENCY CONVERTERS
CUMARK VFD Industrial Reliability Features
| Technical Hub
High Reliability/ES Series Frequency Converter
Innovative Thermal Design Philosophy and
Professional Thermal Simulation Analysis
- The innovative thermal design philosophy and first-class efficient thermal simulation software bring about the innovative and unique design, which provides this product with a comprehensive and systematical heat dissipation structure and solution.
- Advanced heat test and verification technologies like thermal imaging efficiently and completely check theoretical results of the thermal design, and further guarantee thermal reliability of the product system.
Rigorous Temperature Rise Test on the
Whole Converter
- Rigorous testing procedures for full load and overload verification as well as strict temperature rise acceptance standards for key components are adopted to enable the product to operate reliably
under extreme overload conditions for a long time. - High temperature aging testing with 120% load at 50℃, which is the first in China.
- All products shall pass the loaded high temperature aging test before delivery, which can effectively prevent scattered components from being invalid, and guarantee product quality.
Spraying Process of Conforming Coatings
- Multiple high-quality conformal coatings are sprayed to enhance the product's good applicability to the environment.
- The automatic spraying process of conformal coatings is adopted to effectively ensure uniform coating thickness of the circuit board and consistency of batched products.
High Protection Grade
- Especially applied in cables, machine tools, ceramics and textiles industries where the site environments are severe, humid or dusty. The innovative and tightly closed structure design can effectively reduce influence of such environments.
- The protection class can reach IP41(0.4-22KW).
High Interference Performance Capability
- In a standard configuration, the optimally designed built-in DC reactor (15KW and above) can effectively reduce interference from higher harmonic and foreign conduction radiation and strengthen the power grid adaptability.
- In a standard configuration, the built-in input C3 filter is equipped to reduce electromagnetic interference and guarantee steady operation of the device.
- Simple and friendly EMC cut-off point structure designs convenient forgrounding and weakens electromagnetic interference.
Wide Voltage Range Design
- Rated voltage: single phase220V; three-phase 220V/380V/690V
- Voltage frequency:50-60Hz±5Hz
- Allowable voltage fluctuation: -30% to +15%
Innovative and Independent Air Duct Design
- The design can effectively prevent dust and other foreign matters from entering the inside of the frequency converter,thereby avoiding faults caused by electric short circuits and damaged components.
- Electronic components are separatedfrom the main cooling system by the poor conductor or wind screen, to avoid component failuresdue to too high temperature caused by heat radiation from the main-power radiator.
Selection & Design of Key Components
- Strict component selection testing procedures are adopted.All power components such as the rectifier bridge, IGBT and electrolytic capacitor use mainstream products of the first-class manufacturers. Performance and reliability of key components are guaranteed from selection to manufacturing
- Large allowance and derating design ensures reliability of key components.
CE Certification Compliance
- The ES series products meet relevant requirements of European CE directives.
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