500KW 380V AC Load Bank

The 500kW AC Resistive Load Bank from RST Electric represents the forefront of high-power testing technology. Operating at 380V AC (50/60Hz), this 500kW 380V AC Load Bank employs a modular resistor bank architecture with a minimum step load of 5kW, enabling granular simulation of real-world electrical loads. The unit is equipped with a high-precision CET PMC series power meter that displays voltage (L-N/L-L), current, active/reactive/apparent power, power factor, frequency, and cumulative energy - all on a vibrant 7-inch HMI touchscreen. Built to withstand harsh environments, the chassis is fabricated from heavy-gauge cold-rolled steel with a multi-stage anti-corrosion coating. The forced-air cooling system utilizes variable-speed fans with independent thermal sensors, automatically adjusting airflow based on real-time load demands to maximize efficiency and minimize acoustic noise. For automated testing, the load bank supports remote operation via RS485/Modbus-RTU, Ethernet/IP, or PC-based software, allowing seamless integration into existing SCADA systems or custom test protocols. With over 15 years of specialized manufacturing experience, RST Electric ensures every unit undergoes exhaustive factory acceptance testing (FAT) before shipment, complete with calibrated test reports.

1.Ultra-Fine Load Resolution - 5kW step increments allow precise simulation of load variations, critical for governor and AVR testing.

2.Intelligent Thermal Management - PID-controlled fans maintain optimal resistor temperatures, extending service life and reducing acoustic noise.

3.Comprehensive Safety Architecture - Dual-stage over-temperature protection with independent sensors; phase loss and voltage unbalance detection.

4.Industry 4.0 Ready - Standard Ethernet/Modbus TCP interface enables remote monitoring and integration with plant automation systems.

5.User-Centric HMI - Intuitive 7-inch touchscreen with graphical load profiles, real-time trends, and one-touch test presets.

6.Parallel Operation Capability - Master-slave mode allows combining multiple units for multi-megawatt testing without complex external controls.

7.Heavy-Duty Mobility - Reinforced chassis with four-way forklift pockets and lifting lugs designed for easy site relocation.

Technical Specification

Application Scenario Of 500KW 380V AC Load Bank

● Thermal & Gas Power Plants - Commissioning and routine load testing of steam turbines, gas turbines, and diesel generators up to 500kW.

● Hyperscale Data Centers - Validating multi-MW UPS systems, backup generators, and power distribution units (PDUs) under peak load conditions.

● Renewable Energy Parks - Testing utility-scale solar inverters, wind turbine converters, and battery energy storage systems (BESS) at full rated power.

● Heavy Industry - Load testing of large induction motors, variable frequency drives (VFDs), and plant power infrastructure.

● Offshore & Marine - Suitable for platform generator testing, shipboard power system validation, and drilling rig electrical equipment.

● Research & Certification Labs - Providing precise resistive loads for product development, type testing, and grid code compliance verification.

Drawing and dimensions

Package and Shipment

RST Electric employs a stringent packaging protocol for all 500kW 380V AC Load Bank exports. Each unit is first wrapped in VCI (Vapor Corrosion Inhibitor) film to protect against moisture, then encased in multiple layers of industrial stretch wrap. Heavy-duty steel strapping secures the load to a reinforced export pallet, and the entire assembly is enclosed in a custom-built, fumigation-free plywood crate compliant with ISPM 15 standards. For air freight, we provide shock- and tilt-indicators to monitor handling conditions. All shipments include comprehensive documentation: packing lists, commercial invoices, certificates of origin, and factory test reports. We collaborate with global freight forwarders to offer flexible shipping options - FCL, LCL, air freight, or door-to-door express - ensuring your equipment arrives on time and in perfect condition.

When reliability meets power, RST Electric leads the way.

When reliability and high power demand collide, RST Electric is always at the forefront of the industry, offering you high-quality 500KW 380V AC Load Bank. We are a legitimate Chinese manufacturer. From product design, component procurement, to production manufacturing and quality control, every step is strictly managed by us. This ensures stable product quality and saves you the middle links, allowing you to enjoy factory direct supply prices without any hidden charges, achieving a higher procurement cost performance.

Development History

Since 2008, we have been dedicated to the research and manufacturing of high-power load boxes. We have an ISO 9001-certified factory with a total area of over 7,000 square meters, equipped with an automated assembly line. Our production efficiency and quality control capabilities are consistently at the forefront of the industry. We have a professional in-house R&D team that is always focused on the innovation and upgrading of thermal management technology and control software, continuously optimizing product performance to meet the high-end testing requirements of various industries. Before each load box leaves the factory, a calibration instrument is used to complete 100% full-load aging tests to ensure that the product can operate stably after delivery and eliminate any quality risks.

Product Market

Over the years, we have become a trusted supplier for customers in over 50 countries worldwide, with clients located in regions such as the United States, Germany, the United Arab Emirates, Singapore, Australia, and others. We have accumulated extensive industry experience in fields such as power generation, data centers, renewable energy, and heavy industry. If you need customer case studies and reference materials for similar high-power projects, we can provide them at any time. We offer comprehensive customized services. The voltage options include 380V, 400V, 415V, 480V, and 690V. We can also achieve a 11kV voltage requirement by combining with a step-down transformer. The enclosure protection grades include IP23 indoor type, IP54 outdoor type, and IP56 marine grade. The control methods can be upgraded to advanced PLC, wireless remote control, mobile APP control, and can also be customized with SCADA integration. The metering methods can be selected as basic type, power quality analyzer, or multi-point temperature monitoring according to the requirements.

Regarding After-sales Service

In terms of delivery and after-sales, the standard delivery period for the customized 500KW 380V AC Load Bank is 20-25 working days. We provide complete technical materials in multiple languages such as English, Spanish, French, and Arabic. At the same time, we can arrange professional on-site engineers to provide on-site commissioning and training services according to customer needs, ensuring the entire process of your procurement and use is protected.