Non-Linear Load Bank

RCD Load Bank: Real-World Non-Linear Load Simulation

The Non-Linear RCD Load Bank from RST Electric represents a paradigm shift from traditional resistive-only load testing. Designed for engineers and researchers who need to simulate real-world electrical loads—complete with reactive power components and varying power factors—this Non-Linear Load Bank integrates three distinct load types: Resistive (R) for pure active power simulation, Capacitive (C) for leading power factor conditions, and Inductive (L) for lagging power factor scenarios. By combining these elements, the RCD load bank can accurately replicate the electrical characteristics of motors, power supplies, UPS systems, and grid-tied inverters, enabling comprehensive performance validation under realistic operating conditions.

High Precision Loading & Flexible Power Factor Control

The load step resolution is an industry-leading 0.1kW for resistive mode and 0.1kVA for RCD mode, enabling precise fine-tuning of test parameters. Loading accuracy is maintained at ±3%, ensuring repeatable and reliable test results. The unit supports two distinct operating modes: R Load Mode (pure resistive) and RCD Load Mode (combined resistive, capacitive, and inductive), selected via the intuitive touchscreen interface. Power factor can be continuously adjusted across the range of 0.65 to 1.0 (lagging or leading), providing full flexibility for standards compliance testing.

Dual-Mode Control & Remote Communication for Smart Testing

Control is dual-mode: local operation via a high-resolution 7-inch touchscreen displays real-time voltage, current, power, frequency, and power factor, along with live trend curves for each parameter. Data logging and export are built-in, allowing engineers to capture test results for analysis. For automated test sequences, the load bank supports RS485/Modbus-RTU remote communication, enabling integration with PC-based software for remote loading, data acquisition, and report generation. As a trusted Non-Linear Load Bank manufacturer in China, RST Electric combines over 10 years of power testing expertise with precision engineering to deliver solutions that accelerate product development and ensure compliance with international standards.

Technical Specification

Product Features of Non-Linear Load Bank

1.RCD Nonlinear Load Simulation – Integrates resistive, capacitive, and inductive elements to accurately emulate real-world loads with adjustable power factor from 0.65 to 1.0 (lagging or leading).

2.Three-Phase Independent Control – Each phase can be loaded separately, enabling unbalanced load testing for three-phase inverters, UPS systems, and power supplies.

3.Ultra-Fine Load Resolution – 0.1kW (resistive) and 0.1kVA (RCD) step increments allow precise simulation of real-world load variations.

4.Dual Operating Modes – Switchable between pure resistive (R) mode and combined RCD mode to support diverse testing requirements.

5.High-Precision Measurement – Class 0.5 multi-function instrument with ±3% load accuracy ensures reliable, repeatable test results.

6.Intuitive Touchscreen Interface – 7-inch HMI with real-time parameter display, trend curves, data logging, and export capabilities – no PC required for basic testing.

7.Remote Automation Ready – RS485/Modbus-RTU communication enables integration with PC software for automated test sequences and data acquisition.

8.Quiet, Lab-Friendly Operation – Forced air cooling with variable-speed fans maintains ≤65 dB noise level, suitable for laboratory and office environments.

9.Compact & Mobile Design

10.Comprehensive Safety – Over-temperature, over-voltage, over-current, and emergency stop protections ensure safe operation during unattended testing.

Product Applications

Drawing and dimensions

Package and shipment

RST Electric ensures safe delivery of every Non-Linear RCD Load Bank:

● Heavy-Duty Crating: The unit is mounted on a reinforced wooden skid with foam padding and enclosed in a custom plywood crate for international shipping.

● Vibration Protection: Critical components are secured with additional bracing to prevent damage during transit.

● Documentation: Packing lists, factory test reports, and operating manuals included.

● Freight Options: FCL sea freight, air freight, or door-to-door express available.

All units undergo factory acceptance testing (FAT) including full-load burn-in, calibration verification, and communication protocol validation before shipment.

Why choose RST Electric？

Factory direct supply is guaranteed

RST Electric is a formally certified manufacturer in China. It has been dedicated to the research and production of Non-Linear Load Banks for over 10 years and is a seasoned manufacturer specializing in RCD load box products. From the design and assembly of resistors, capacitors, and inductors to the final product inspection, the entire process is independently controlled without any outsourcing. This ensures the stable and uniform quality of each device from the very beginning. The factory direct supply model eliminates all middleman markup, making the price transparent and traceable. This allows buyers to purchase high-quality non-linear load boxes that meet international standards at a more reasonable cost, significantly improving the procurement efficiency and cost-effectiveness.

Strict quality control

We have an ISO 9001-certified production base equipped with dedicated production lines. Before each piece of equipment leaves the factory, it undergoes 100% full-load aging, power factor verification, communication protocol calibration, and other rigorous tests to ensure that no substandard products enter the market. Our professional engineering team specializes in power electronics testing and compliance standards, and can precisely control every detail of the product to ensure that the equipment operates stably in various testing scenarios and meets the needs of multiple applications such as research and development, production, and testing.

Global Cooperation Experience

With solid product quality and professional services, we have become a reliable supplier for global R&D laboratories, power electronics manufacturers, and renewable energy testing institutions. Our products are exported to 40+ countries and regions including Germany, the United States, and Japan. We have the field of non-linear load simulation and are familiar with the testing standards and purchasing requirements of different industries and regions. We can precisely match various scenarios and provide more adaptable product solutions for global buyers.

Full-dimensional customization

We can offer comprehensive customization services. The power range covers 30kVA to 300VA+, and the voltage supports standard specifications such as 380V and 400V as well as customized requirements. The load type can be selected as pure resistance, RCD mixture, or customized RLC ratio. The step accuracy, control method, and communication interface can all be adjusted as needed. This perfectly meets the exclusive testing requirements of different purchasers and can be put into use without additional adaptation.

Guaranteed after-sales service

We offer flexible delivery periods. Standard models are delivered within 20-25 days, and customized models within 30-45 days. We can flexibly adapt to the production and testing plans of the purchasers. The goods come with complete test reports, calibration certificates, user manuals and other materials. All products enjoy a 12-month warranty. During the warranty period, we provide remote fault diagnosis, spare parts delivery services, as well as technical support such as test process formulation and on-site debugging. We are fully committed to protecting the purchasers throughout the process.