EH6

YMIN EH6 Series Aluminum Electrolytic Capacitors: The Reliable Energy Cornerstone of Industrial Power Systems

In industrial power electronics, the choice of capacitor often determines the stability and lifespan of the entire system. For the 1200V DC bus voltage commonly found in equipment like inverters and high-power power supplies, traditional solutions require three 400V capacitors connected in series. This not only increases system complexity and space requirements, but also poses reliability risks. The introduction of the YMIN EH6 Series Bolt-On Aluminum Electrolytic Capacitors revolutionizes this landscape.

Innovative Design: Redefining the Standard for High-Voltage Capacitor Applications

The EH6 series' most compelling feature is its high-rated voltage range of 630V. This groundbreaking design allows for safe 1200V DC bus operation with only two EH6 capacitors connected in series. Compared to traditional three-capacitor series solutions, this reduces component count and significantly improves system reliability. Each capacitor utilizes thickened anode foil and a special electrolyte formulation to ensure stable electrical performance even in high-voltage environments.

This series of capacitors offers a capacitance range from 1000μF to 10,000μF, sufficient to meet the needs of most industrial applications. Particularly noteworthy is its capacity retention rate exceeding 50%, even at -25°C, ensuring reliable startup and operation in harsh environments. Leakage current is strictly controlled to within 1.5mA or 0.01CV, demonstrating the product's excellent insulation performance.

Rugged Construction and Safety Features

The EH6 series utilizes a fully screw-type terminal design with a maximum torque of 7.5N·m, ensuring a stable electrical connection even under high current conditions. The housing features an explosion-proof valve, which safely relieves internal pressure in the event of an abnormal increase, effectively preventing rupture. The use of an insulating outer sleeve ensures a 2000V AC insulation voltage between the terminal and the housing, significantly enhancing device safety.

The product's durability test results are impressive: after 6000 hours of continuous operation at an ambient temperature of 85°C and with rated voltage and ripple current applied, the capacitance change did not exceed ±20%, the loss tangent did not exceed 200% of the initial specification, and the leakage current remained within the initial specification. These data fully demonstrate the product's reliability under long-term continuous operation.

Excellent Ripple Current Capacity

Ripple current capacity is a key performance metric for power capacitors. The EH6 series excels in this regard. More importantly, it provides comprehensive frequency and temperature correction coefficients, enabling engineers to accurately calculate the actual usable ripple current under various operating conditions.

As frequency increases, the capacitor's ripple current capacity significantly increases. At 10kHz, the correction coefficient reaches 1.4, meaning the actual ripple current is 40% higher than the baseline 120Hz condition. The temperature correction coefficient ensures that higher ripple currents can be safely used at lower ambient temperatures. For example, at 40°C, the correction coefficient reaches 1.89, providing additional safety margin for system design.

Real-World Application Scenario Analysis

The EH6 series demonstrates its unique advantages in inverter applications. For example, a 55kW inverter from a certain brand has a DC bus voltage of 1000V. Traditional solutions require three 400V/2200μF capacitors connected in series. Switching to the EH6 series reduces installation space by 35%, significantly reduces system complexity, and significantly improves reliability.

The EH6 series also excels in high-power switching power supplies. A telecommunications power supply manufacturer uses EH6 capacitors for output filtering in its 48V/3000A system. Thanks to the product's excellent ripple current handling and long life, the system's mean time between failures (MTBF) has increased by approximately 25%. The capacitors' stable performance ensures reliable power supply for telecommunications equipment and reduces maintenance requirements.

Industrial welding equipment is another typical application scenario. This equipment typically undergoes frequent charge and discharge cycles, placing extremely high demands on capacitor durability. The EH6 series' specially optimized electrode structure and electrolyte system are designed to withstand frequent current surges, demonstrating excellent durability in demanding applications such as spot welding machines.

Technical Innovation and Quality Assurance

The success of the EH6 series is due to numerous technological innovations. The high-purity electronic aluminum foil used undergoes a special etching process, increasing its effective surface area by over 50% compared to ordinary aluminum foil. This is the foundation for achieving high capacitance and low ESR. The electrolyte formula has been carefully optimized to maintain stable conductivity over a wide temperature range while effectively suppressing gas generation, ensuring a long product life.

In terms of production, YMIN has introduced a fully automated winding system to ensure consistent winding tension throughout each capacitor core pack. A vacuum impregnation process ensures that the electrolyte fully penetrates every corner of the core pack, eliminating potential bubbles and voids. A final aging screening process ensures that every product meets the designed performance specifications.

Industry Application Outlook

As industrial equipment evolves towards higher voltage and higher power, demand for high-performance capacitors will continue to grow. The launch of the EH6 series precisely addresses this market demand. In renewable energy power generation applications such as photovoltaic inverters and wind power converters, its high voltage characteristics make it an ideal choice as a DC link capacitor. In electric vehicle charging stations, its long life and high reliability meet the requirements for long-term continuous operation.

Rail transportation is another key application area. Train traction converters place extremely high demands on component reliability and lifespan. The EH6 series meets these stringent requirements, providing component-level support for the localization of rail transit equipment. Industrial automation equipment, particularly high-power servo drive systems, will also benefit from the EH6 series' superior performance.

The Value of Choosing the EH6 Series

For equipment manufacturers, choosing the EH6 series offers multiple benefits. First, simplified system design reduces engineering development effort and shortens time to market. Second, reduced component count means lower bill of materials costs and inventory pressure. Most importantly, the product's high reliability translates into market competitiveness for end-use equipment, helping manufacturers build their brand reputation.

From a lifecycle cost perspective, the EH6 series' long life significantly reduces equipment maintenance costs and downtime losses. This is particularly important for continuously operating industrial equipment. Its RoHS compliance demonstrates corporate environmental responsibility and helps end-use equipment manufacturers meet increasingly stringent environmental regulations.

The YMIN EH6 series bolt-on aluminum electrolytic capacitors are more than just electronic components; they guarantee the reliable operation of industrial power electronics. Its innovative high-voltage design, robust structure, and excellent electrical performance make it an ideal choice for high-voltage, high-power applications. With the advent of the Industry 4.0 era, such high-performance capacitors will play a vital role in promoting industrial upgrading.