DC type equalizer
This product line includes two models, DC300V-200VDC-20kW and DC300V-200VDC-30kW, which are high-performance DC power conversion units designed for industrial and energy storage applications. Boasting a wide voltage range (300-850Vdc for high-voltage side, 200-850Vdc for low-voltage side), the units deliver rated currents of 60A/80A (high-voltage) and 100A/133A (low-voltage) respectively, with exceptional stability (voltage ripple <2%, current ripple <5%).
Key features include constant voltage/constant current charging/discharging, on-the-fly mode switching, high-voltage side discharge, and battery interlock contacts.
With high efficiency (>98.5%), low no-load loss (≤0.8% of rated power), robust overload capacity (110% long-term, 120% for 10min), IP54 protection, and 485/CAN communication, these units are engineered for reliability and versatility in harsh industrial environments.
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Product Description
High-Performance DC Power Conversion Units: DC300V-200VDC-20kW/30kW
The DC300V-200VDC series, available in 20kW and 30kW configurations, represents a pinnacle of precision and durability in DC power conversion technology, tailored to meet the rigorous demands of modern industrial, energy storage, and battery testing applications. Engineered with a focus on efficiency, stability, and functional flexibility, these units redefine performance benchmarks for DC power systems, offering a comprehensive solution for high-voltage and low-voltage power management across diverse operational scenarios.
Core Electrical Specifications: Precision and Adaptability
Core Electrical Specifications: Precision and Adaptability
At the heart of these units lies a robust electrical design that balances wide voltage compatibility with tight performance tolerances. The high-voltage side supports an input/output range of 300-850Vdc, with rated currents of 60A (20kW model) and 80A (30kW model) – a design choice that ensures compatibility with a broad spectrum of industrial power systems and battery packs. The low-voltage side extends flexibility further, operating across 200-850Vdc, with rated currents of 100A (20kW) and 133A (30kW), making the units suitable for both high-power and low-voltage battery applications, from energy storage systems (ESS) to electric vehicle (EV) battery testing.
Critical to performance is the exceptional stability of the output. The low-voltage side voltage ripple is limited to <2%, and current ripple to <5% – figures that far exceed industry standards and ensure minimal interference with sensitive load equipment or battery cells. Voltage regulation precision on the low-voltage side is <±5% full scale (f.s.), with current regulation precision at <±7% f.s., guaranteeing consistent power delivery even under fluctuating load conditions. For safety and durability, the units meet a withstand voltage level of 2500Vms/50Hz and feature a high-voltage side circuit breaking capacity of >20kA, protecting both the unit and connected equipment from voltage surges and short-circuit events.
Product Parameters
Product Model |
DC300V-200VDC-20kW |
DC300V-200VDC-30kW |
High Voltage Parameters |
|
|
High Voltage Input Range |
300~850Vdc |
300~850Vdc |
High Voltage Rated Current |
60A |
80A |
Low Voltage Parameters |
|
|
Low Voltage Output Voltage Range |
200~850Vdc |
200~850Vdc |
Low Voltage Rated Current |
100A |
133A |
Low Voltage DC Voltage Ripple |
<2% |
<2% |
Low Voltage DC Current Ripple |
<5% |
<5% |
Low Voltage Voltage Regulation Accuracy |
<±5% f.s. |
<±5% f.s. |
Low Voltage Current Regulation Accuracy |
<±7% f.s. |
<±7% f.s. |
Withstand Voltage Level |
2500Vms/50Hz |
2500Vms/50Hz |
High Voltage Circuit Breaking Capacity |
>20kA |
>20kA |
Function Description |
|
|
Constant Voltage Charging Function |
Yes (Low Voltage Side) |
Yes (Low Voltage Side) |
Constant Voltage Discharging Function |
Yes |
Yes |
Constant Current Charging Function |
Yes |
Yes |
On-line Switching of Constant Voltage/Constant Current/Constant Power Mode |
Yes |
Yes |
High Voltage Side Discharging Function |
Yes |
Yes |
Battery Interlock Dry Contact |
Yes |
Yes |
System Parameters |
|
|
Rated Power |
20kW |
30kW |
Maximum Efficiency |
>98.5% |
>98.5% |
No-load Loss |
≤0.8% (Rated Power) |
≤0.8% (Rated Power) |
Overload Capacity |
110% overload for long term, 120% overload for 10min |
110% overload for long term, 120% overload for 10min |
Protection Grade |
IP54 |
IP54 |
Communication Interface |
485, CAN |
485, CAN |
Functional Versatility: Tailored to Diverse Operational Needs
What sets the DC300V-200VDC series apart is its comprehensive feature set, designed to adapt to the dynamic requirements of modern power management. Both models include constant voltage charging/discharging and constant current charging/discharging functionality – essential for battery testing, formation, and maintenance, where precise control over charge/discharge profiles is critical to extending battery life and ensuring performance consistency.
The ability to switch on-the-fly between constant voltage, constant current, and constant power modes eliminates the need for manual reconfiguration, streamlining operations in high-throughput environments such as battery manufacturing facilities or industrial testing labs. The inclusion of a high-voltage side discharge function adds a layer of safety and practicality, allowing for controlled energy dissipation from the high-voltage circuit – a vital feature for maintenance, emergency shutdowns, or battery pack reconditioning.
For seamless integration into industrial control systems, the units are equipped with battery interlock contacts, enabling safe, automated shutdowns or state monitoring of connected battery packs. This feature is particularly valuable in energy storage installations, where safety protocols and real-time system status are non-negotiable.
System-Level Performance: Efficiency, Durability, and Connectivity
System-Level Performance: Efficiency, Durability, and Connectivity
Beyond core electrical and functional features, the DC300V-200VDC series excels in system-level performance metrics that define long-term reliability and operational cost-effectiveness. The maximum efficiency of >98.5% minimizes energy waste, a critical advantage for high-power applications where energy consumption directly impacts operational costs. Even in idle conditions, no-load loss is limited to ≤0.8% of rated power, ensuring minimal energy drain when the unit is not actively delivering power – a key consideration for 24/7 industrial environments.
Robustness is built into the design, with overload capacity rated at 110% for long-term operation and 120% for 10-minute durations. This resilience allows the units to handle temporary load spikes without shutdown or damage, ensuring uninterrupted operation in demanding industrial settings. The IP54 protection rating shields the internal components from dust ingress and water splashes, making the units suitable for installation in harsh environments, including factory floors, outdoor enclosures, and energy storage facilities.
For seamless integration into industrial automation systems, both models feature dual communication interfaces: 485 (RS485) and CAN bus. RS485 supports long-distance, multi-device communication for centralized control, while CAN bus is ideal for real-time, high-reliability data exchange in automotive and industrial control networks. This dual-interface design ensures compatibility with legacy control systems and modern IoT-enabled industrial platforms, enabling remote monitoring, parameter adjustment, and fault diagnosis.
Application Scope and Value Proposition
The DC300V-200VDC-20kW/30kW units are engineered for versatility, with applications spanning battery manufacturing and testing, renewable energy storage systems, industrial power supply, and EV battery maintenance. In battery production, the precise charge/discharge control and low ripple ensure consistent battery performance and quality. In energy storage systems, the high efficiency and overload capacity make the units ideal for grid-tied or off-grid energy storage, while the IP54 rating and robust design ensure durability in outdoor or semi-outdoor installations.
For industrial users, the units offer a balance of performance, reliability, and ease of integration, reducing operational downtime and maintenance costs. The ability to switch operating modes in real time and communicate with central control systems enhances operational efficiency, while the high safety standards (withstand voltage, circuit breaking capacity) mitigate risk and ensure compliance with industrial safety regulations.
For industrial users, the units offer a balance of performance, reliability, and ease of integration, reducing operational downtime and maintenance costs. The ability to switch operating modes in real time and communicate with central control systems enhances operational efficiency, while the high safety standards (withstand voltage, circuit breaking capacity) mitigate risk and ensure compliance with industrial safety regulations.
In summary, the DC300V-200VDC series combines precision engineering, functional flexibility, and industrial-grade durability to deliver a power conversion solution that meets the evolving needs of modern energy and industrial applications. Whether for high-volume battery testing, continuous industrial power supply, or reliable energy storage management, these units set a new standard for performance, efficiency, and adaptability in DC power conversion technology.
