Compact PWM-Regulated Electric Coolant Pump for Energy Storage Converter (PCS)

The OWP-BL43-440T Electric Coolant Pump stands out as a high-performance solution tailored for industrial heat dissipation needs, combining efficiency and durability. Its closed impeller design not only maximizes pumping efficiency but also keeps operational noise below 60dB, ensuring a low-noise working environment. As a permanent magnet brushless pump, it features a space-saving compact design and low power consumption, making it ideal for installations with limited space in energy storage systems. The shaft system adopts ultra-long-life friction pair materials, a key factor behind its service life exceeding 20,000 hours, which minimizes maintenance needs and lowers long-term operational costs. The integrated centrifugal & shielded structure enhances operational stability and isolates internal components from external impurities, reducing wear and tear. With PWM duty cycle speed regulation, the pump enables precise flow adjustment to adapt to dynamic heat load changes. It also comes with comprehensive protection functions, including reverse connection protection, overvoltage protection, overcurrent protection, dry running protection, and overtemperature protection, ensuring safe and reliable operation under various working conditions. Boasting an IP68 rating, the pump provides full protection against dust ingress and continuous water submersion, making it resilient in harsh industrial environments.

The OWP-BL43-440T Electric Coolant Pump is specifically developed to address the critical heat dissipation requirements of energy storage converters (PCS) in the energy storage industry. Energy storage converters (PCS) play a pivotal role in converting DC power from storage batteries to AC power for grid use and vice versa, a process that generates substantial heat. Effective heat dissipation is crucial to maintain the PCS’s operational efficiency, prevent component overheating, and extend its service life. This pump is perfectly suited for this application, thanks to its optimized performance parameters: a rated flow rate of 3000L/H at 20M head ensures consistent circulation of cooling media (50-60% glycol-water mixture, dielectric oil, or electronic fluorinated solution), while the maximum flow rate of 5000L/H allows it to handle peak heat loads efficiently. With a maximum lift head of 23M, the pump can reliably circulate cooling fluids through complex piping systems in PCS units, even in large-scale energy storage installations. The 25mm outlet diameter supports optimal flow velocity, enhancing heat transfer efficiency. Its wide medium temperature range (-40℃ to 85℃) enables stable operation in extreme climatic conditions, from cold outdoor environments to high-temperature industrial settings. The PWM speed regulation function allows the OWP-BL43-440T to adjust its output in real time based on the PCS’s heat generation, ensuring precise temperature control and energy savings. The high/low-level fault feedback signal provides instant operational status alerts, enabling quick maintenance and minimizing downtime. Equipped with IP68 protection and robust safety features, this electric coolant pump guarantees uninterrupted performance in demanding PCS environments, safeguarding the converter’s reliability and the overall stability of the energy storage system. Whether deployed in utility-scale energy storage projects, commercial energy storage facilities, or industrial PCS applications, the OWP-BL43-440T delivers the efficiency, durability, and precision required for optimal heat dissipation in energy storage converters.

PWM Speed Control

Performance Curve

Dimensional Drawing