RL Load Bank

GROADA-AC346V-50KVA-RL Resistive inductive load box

★★★★★
Main Products:
  • AC Load Bank : R / RL / RLC / RCD
  • DC Load Bank : DC5V - 2000V, 0A - 5000A


ModelAC220V-10KVA-RLAC380V-30KVA-RLAC380V-60KVA-RLAC380V-100KVA-RLAC380V-300KVA-RLAC380V-500KVA-RLAC380V-1000KVA-RL
Rated powerRL=10KVARL=30KVARL=60KVARL=100KVARL=300KVARL=500KVARL=1000KVA
R=10KW;L=6KVAR=30KW;L=18KVAR=60KW;L=36KVAR=100KW;L=60KVAR=300KW;L=180KVAR=500KW;L=300KVAR=1000KW;L=600KVA
Input current0-45A0-45A0-90A0-150A0-450A0-750A0-1500A
Size (width * depth * height mm)480*600*277480*600*360500*750*1000600*850*1000700*1000*16501100*1400*17001100*1500*1900
Weight25KG40KG80KG130KG250KG550KG750KG
Minimum loading100W100W100W500W1KW5KW10KW
Other minimum loading power can be customized according to requirements
Input voltageAC220/230VAC380/400V
Other input voltage can be customized according to requirements
power factorPF = 0.8/1.0 (other power factor can be customized according to requirements)
Overall accuracy3% (other accuracy requirements can be customized according to requirements)
Control modeLocal manual/remote host computer (local manual control mode: circuit breaker/button/touch screen three-way optional, other methods can be customized as required)
Remote InterfaceRS232/RS485/USB/RJ45/CAN/GPIB (other interface modes can be customized according to requirements)
Protection functionEmergency stop protection, over-temperature protection, fan load interlock protection, grounding protection (select over-voltage protection, over-current protection, short-circuit protection, fan overload, insufficient air volume)
Working power supplyAC220VAC220V/380VAC380V
Display accuracy0.5 level (other explicit precision can be customized according to requirements)
Display parametersVoltage, current, power, frequency, power factor, etc. (other explicit methods can be customized according to requirements)
Cold sure waySide air inlet and upper air outlet (other air outlet methods can be customized according to requirements)
Protection levelIP20 (other protection level can be customized according to requirements)
Appearance colorRAL7035 (other colors can be customized according to requirements)
Working temperature-10 ℃ ~ 55 ℃
Relative humidity≤95%RH
Altitude≤ 2500 m



AC 346V 50 kVA RL Resistive / Inductive Load Bank

Precision, Reliability, and Real-World Power Testing from GROADA


Overview

The GROADA AC 346V 50 kVA RL Load Bank is a high-precision testing system designed to simulate both resistive and inductive loads for generators, UPS systems, turbines, and electrical power networks.
With a power factor of 0.8 lagging, this unit accurately reproduces real-world load conditions, allowing engineers to verify performance, detect weaknesses, and prevent failures before they occur.

Built for industrial, marine, data center, and energy applications, the GROADA RL Load Bank combines advanced control technology, modular construction, and robust safety systems—delivering consistent, repeatable, and safe load testing results in any environment.


Key Features & Advantages

1. True RL Load Simulation (0.8 Power Factor)

  • Simulates both resistive and inductive components simultaneously, providing a realistic representation of motor-driven and transformer-based systems.

  • Offers resistive-only, inductive-only, or combined RL operation for flexible testing modes.

  • Ideal for generator commissioning, factory acceptance testing (FAT), UPS maintenance, and system validation under lagging power factor conditions.

  • Helps ensure that your equipment performs efficiently under real operational demands—not just laboratory conditions.


2. Precision Step Control & Modular Design

  • Fine-tuned load step increments (e.g., 1 kW / 1 kVAR) for accurate load adjustment and gradual system ramp-up.

  • Modular resistive and inductive sections allow independent operation, easy calibration, and simplified servicing.

  • Parallel connection capability enables capacity expansion beyond 50 kVA for large-scale test systems.

  • Ensures smooth, stable transitions during load switching—reducing stress on test subjects and extending lifespan.


3. Advanced Control & Monitoring

  • Integrated digital PLC control system with high-precision data acquisition.

  • Real-time display and recording of voltage, current, power, power factor, frequency, and temperature.

  • Optional remote control and data logging via Ethernet / RS485 / wireless interfaces.

  • Automated test sequences with programmable ramp rates, dwell times, and step loads—ideal for repetitive testing and certification workflows.

  • Safety interlocks prevent unintended operation during testing or maintenance.


4. Robust Industrial Construction

  • Heavy-duty, powder-coated steel enclosure ensures durability and corrosion resistance in harsh environments.

  • Designed for indoor or outdoor operation, with high-efficiency forced-air cooling and thermostatically controlled fans.

  • All circuits are fully protected by overload breakers, fuses, and fault-detection systems.

  • Equipped with over-temperature, airflow failure, overload, emergency-stop, and load-dump protection mechanisms.

  • Engineered to operate continuously at full load without performance degradation, ensuring long service life and stable accuracy.


5. Prevents Generator “Wet Stacking” and Improves System Reliability

  • Regular load bank testing prevents wet stacking—the accumulation of unburned fuel and carbon deposits in diesel engines.

  • By simulating realistic load conditions, it ensures complete combustion and optimal generator efficiency.

  • Detects voltage drops, connection issues, insulation degradation, and cooling inefficiencies before they cause failures.

  • Essential for routine preventive maintenance in telecom, healthcare, data centers, and utility power plants.


6. Safety, Compliance & Long-Term Support

  • Built to meet or exceed international electrical and safety standards.

  • Each GROADA load bank undergoes full functional testing, calibration, and quality assurance before shipment.

  • Optional CE / ISO / UL-ready configurations available for compliance with global certification requirements.

  • Backed by GROADA’s comprehensive after-sales support, including commissioning assistance, spare parts supply, training, and remote diagnostics.


Technical Specifications

ParameterSpecification
ModelAC 346V 50 kVA RL Load Bank
Rated Capacity50 kVA (resistive + inductive)
VoltageAC 346 V (3-phase, 50/60 Hz)
Power Factor0.8 (lagging)
Load Steps1 kW / 1 kVAR increments (customizable)
Cooling MethodForced air cooling with automatic fan control
ProtectionOver-temperature, airflow fault, overcurrent, emergency stop, short-circuit, load-dump
Control OptionsLocal control panel / Remote PLC / Network control
Enclosure RatingWeatherproof (IP54 / NEMA 3R optional)
Operating EnvironmentIndoor / Outdoor – -10 °C to +50 °C
ConstructionGalvanized steel with powder coating
ModularityExpandable capacity with parallel units

Applications

The GROADA AC 346V 50 kVA RL Load Bank is engineered for a broad range of industrial and mission-critical applications, including:

  • Generator commissioning and maintenance
    Validate generator output, voltage regulation, and governor response under full load.

  • UPS and inverter testing
    Simulate both linear and reactive loads to confirm backup system reliability.

  • Transformer and switchgear evaluation
    Test equipment under realistic load and power factor conditions.

  • Data center and telecom infrastructure
    Conduct performance and redundancy tests for critical power systems.

  • Marine and offshore platforms
    Verify generator performance in remote or sea-borne installations.

  • Industrial process power systems
    Assess electrical infrastructure before live production.


Why Choose GROADA

  • Experience: Years of specialized manufacturing in resistive and reactive load banks for international markets.

  • Expertise: Engineering team experienced in generator testing, industrial automation, and electrical system design.

  • Authority: Products conform to global standards and are deployed across power generation, defense, oil & gas, and data center sectors.

  • Trustworthiness: Proven field performance, factory quality control, and strong after-sales technical support.

Every GROADA load bank is a reflection of our commitment to innovation, precision, and reliability. We work closely with OEMs, service contractors, and system integrators to deliver tailored power-testing solutions worldwide.


Safety & Compliance Commitment

Electrical testing involves high energy levels and potential hazards. GROADA ensures every RL Load Bank is designed with multi-layer protection, adhering to the latest international safety directives.
All units are subjected to full-load endurance tests, insulation verification, and thermal stability trials prior to delivery—ensuring your system operates safely, efficiently, and within specification throughout its life cycle.


Maintenance & Support

GROADA offers complete post-delivery services, including:

  • On-site installation and commissioning support

  • Operator training and technical documentation

  • Calibration and periodic inspection programs

  • Spare parts availability and rapid global logistics

  • Remote technical assistance and diagnostics

We ensure long-term operational stability and minimum downtime, protecting your investment and productivity.


Call to Action

Ensure your power systems are always ready for real-world performance.
Contact GROADA today to discuss your AC 346V 50 kVA RL Load Bank requirements, request a quotation, or schedule an engineering consultation.
Trust GROADA—your global partner in professional load testing and power reliability.

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