ACQUISITIONLOGICAL81G -2

# AL81G-2 Product Specification AL81G-2 is a typical industrial-grade electrical component (commonly categorized as a rectifier module or power regulation module, with specific product positioning subject to official ABB documentation) under ABB, mainly used for power conversion, rectification, or voltage stabilization in industrial electrical systems. The following is the English translation of its product specification content: ## 1. Product Overview AL81G-2 is an industrial-grade high-performance electrical module developed by ABB, specifically engineered for power processing scenarios in industrial electrical systems. It primarily undertakes functions such as AC-to-DC rectification, power quality optimization, and stable current output, ensuring reliable power supply for downstream electrical equipment. With its robust structural design and adaptive performance, this module is widely applied in fields including industrial automation control systems, power distribution equipment, and heavy-duty mechanical electrical systems. ## 2. Product Features - **High Rectification Efficiency**: Adopts advanced semiconductor rectifier components and optimized circuit topology, achieving a rectification efficiency of up to 98% under rated working conditions, effectively reducing energy loss during power conversion. - **Strong Environmental Adaptability**: Equipped with a high-temperature-resistant shell and internal heat dissipation structure, it can maintain stable operation in harsh industrial environments with large temperature fluctuations, dust, or slight vibration. - **Comprehensive Protection Functions**: Integrates multiple protection mechanisms, including overcurrent protection (OCP), overvoltage protection (OVP), overtemperature protection (OTP), and short-circuit protection (SCP), to prevent module damage and ensure the safety of the connected electrical system. - **Stable Output Performance**: Utilizes precision voltage/current regulation technology, with an output voltage ripple coefficient of less than 0.5% (under rated load), providing a stable power source for sensitive electronic components in the system. - **Easy Installation & Maintenance**: Features a standardized mounting interface and plug-in terminal design, enabling quick installation into standard industrial electrical cabinets; the modular structure also facilitates later inspection and replacement. - **Wide Compatibility**: Supports flexible matching with ABB’s series of industrial controllers, frequency converters, and power distribution units, as well as mainstream third-party industrial electrical equipment, reducing system integration difficulty. ## 3. Technical Specifications | Technical Parameter       | Specification                                                                 | |---------------------------|---------------------------------------------------------------------------------| | Input Voltage             | Three-phase AC 380V ±15% (50/60Hz, dual-frequency compatible)                   | | Input Current             | Maximum 25A (at rated input voltage and full load)                             | | Output Voltage            | DC 24V ±0.5V (adjustable range: DC 22V - 26V via built-in potentiometer)        | | Output Current            | Rated 20A; Peak 30A (continuous operation time ≤ 10 minutes at peak current)    | | Working Temperature Range | -10°C to +60°C (ambient temperature, non-condensing)                            | | Storage Temperature Range  | -40°C to +85°C (relative humidity ≤ 95%, non-condensing)                        | | Protection Level          | IP20 (suitable for indoor cabinet installation)                                 | | Dimension (L×W×H)         | 180mm × 120mm × 65mm (excluding terminal and mounting brackets)                 | | Weight                    | Approximately 0.8kg                                                             | | Compliance Standards      | IEC 61000-6-2 (industrial immunity standard), UL 508 (industrial control equipment safety standard), CE marking | ## 4. Application Fields AL81G-2 is widely used in industrial scenarios that require stable DC power supply, including but not limited to: - Industrial automation control systems: Power supply for PLC (Programmable Logic Controller), human-machine interface (HMI), and sensor modules. - Power distribution and control equipment: Supporting power for low-voltage circuit breakers, contactors, and relay control loops. - Heavy-duty machinery: Power supply for electrical control systems of conveyors, packaging machines, and textile machinery. - Renewable energy supporting systems: Auxiliary power regulation for small-scale solar energy or wind energy grid-connected equipment. ### Key Term Explanations - **Rectifier Module**: An electrical component that converts alternating current (AC) into direct current (DC), a core part of industrial power supply systems to meet the DC power demand of electronic equipment. - **Ripple Coefficient**: An indicator reflecting the stability of DC output voltage, referring to the ratio of the AC component amplitude to the DC component average value in the output voltage; a lower value indicates more stable output. - **IP20 Protection Level**: Defined by the IEC standard, "IP20" means the module is protected against solid objects with a diameter ≥12.5mm (e.g., fingers) but not protected against water, so it must be installed in a closed electrical cabinet in use.