GROADA-AC380V-50KW-R/RCD inverter load bank
The GROADA AC380V-50KW-R/RCD inverter test load bank is a high-performance testing device specifical...
| Model | AC220V-5KW-RCD | AC220V-10KW-RCD | AC220V-15KW-RCD | AC220V-20KW-RCD | AC380V-30KW-RCD | AC380V-50KW-RCD | AC380V-60KW-RCD | AC380V-100KW-RCD | AC380V-200KW-RCD |
| Rated power | R=5KW | R=10KW | R=15KW | R=20KW | R=30KW | R=50KW | R=60KW | R=100KW | R=200KW |
| RCD=5KVA | RCD=10KVA | RCD=15KVA | RCD=20KVA | RCD=30KVA | RCD=50KVA | RCD=60KVA | RCD=100KVA | RCD=200KVA | |
| Input current | 0-22A | 0-45A | 0-45A | 0-90A | 0-45A | 0-300A | 0-450A | 0-600A | 0-750A |
| Size (width * depth * height mm) | 500*600*800 | 500*600*1000 | 500*600*1100 | 500*750*1100 | 600*850*1400 | 600*850*1600 | 600*850*1850 | 700*1000*1800 | 1100*1400*1800 |
| Weight | 50KG | 80KG | 100KG | 130KG | 200KG | 300KG | 350KG | 450KG | 550KG |
| Input voltage | AC220/230V | AC380/400V | |||||||
| Other input voltage can be customized according to requirements | |||||||||
| Minimum loading | 100W | 100W | 100W | 100W | 100W | 1KW | 1KW | 1KW | 1KW |
| Other minimum loading power can be customized according to requirements | |||||||||
| Overall accuracy | 3% (other accuracy requirements can be customized according to requirements) | ||||||||
| power factor | PF=0.6~1.0 | ||||||||
| peak coefficient | 2 to 3 | ||||||||
| Control mode | Local manual/remote host computer (local manual control mode: circuit breaker/button/touch screen three-way optional, other methods can be customized as required) | ||||||||
| Remote Interface | RS232/RS485/USB/RJ45/CAN/GPIB (other interface modes can be customized according to requirements) | ||||||||
| Protection function | Emergency 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 supply | AC220V | AC220V/AC380V | |||||||
| Display accuracy | 0.5 level (other explicit precision can be customized according to requirements) | ||||||||
| Display parameters | Voltage, current, power, frequency, power factor, etc. (other explicit methods can be customized according to requirements) | ||||||||
| Cold sure way | Side air inlet and upper air outlet (other air outlet methods can be customized according to requirements) | ||||||||
| Protection level | IP20 (other protection level can be customized according to requirements) | ||||||||
| Appearance color | RAL7035 (other colors can be customized according to requirements) | ||||||||
| Working temperature | -10 ℃ ~ 55 ℃ | ||||||||
| Relative humidity | ≤95%RH | ||||||||
| Altitude | ≤ 2500 m | ||||||||
Inverter testing under realistic and controllable loads is essential for verifying performance, reliability, durability, and safety. A properly designed load bank allows:
Reproducible stress testing under full load, partial load, and transient conditions
Control over resistive, inductive, or combined loads simulating real-world motor or grid interactions
Validation of protection circuits (overcurrent, overvoltage, thermal shutdown)
Verification of long-term thermal stability, aging, and component degradation
Without such a load bank, inverter testing may rely solely on field conditions or motor coupling, which can obscure root cause analysis and reduce repeatability.
In fact, industry-standard test labs use both passive (resistive/inductive) and active loads (regenerative electronic loads or motor emulators) to fully stress inverters.
This product page presents a high-precision inverter load bank, specifically designed for AC 380 V systems, capable of handling up to 30 kW rated load. Below is an enhanced, SEO-optimized description:
Nominal Voltage: 380 V AC
Rated Power: 30 kW continuous
Load Type: RCD (Resistive + Capacitive + Inductive combinations)
Load Control Modes: stepwise or continuous adjustment, enabling partial load (e.g. 10 %, 25 %, 50 %, 75 %, 100 %)
Cooling & Thermal Management: forced-air or liquid cooling to maintain stable temperatures under full load
Protection Mechanisms: overcurrent, overvoltage, short-circuit, phase loss, overheating
Load Bank Construction: high-stability precision resistors/inductors, modular load elements
Measurement & Monitoring: integrated current, voltage, power, and temperature sensors; optional logging or remote communication
These features empower R&D labs, quality assurance teams, and inverter manufacturers to test inverters precisely under controlled, repeatable load conditions.
During the design and prototyping phases, engineers can use this load bank to:
Verify full-load performance, thermal limits, and efficiency curves
Stress-test inverter switching components (IGBTs, MOSFETs)
Simulate part-load, transient, and overload scenarios
Validate cooling systems under real thermal load
In mass manufacturing, this load bank can be integrated into automatic test sequences:
Run “burn-in” or "soak" tests to detect early-life failures
Ensure each unit meets declared performance before shipping
Automate pass/fail criteria based on voltage, current, power, and temperature thresholds
After deployment (in solar farms, microgrids, industrial power systems), periodic or after-maintenance tests help:
Confirm the inverter still performs within specification
Detect degradation (e.g. diminished cooling, capacitor aging)
Validate protection circuits and safety margins
Testing inverters with a load bank is considered a best practice in many critical power installations to prevent unexpected failure.
Below is a recommended step-by-step workflow and key considerations:
| Phase | Actions | Purpose / Checks |
|---|---|---|
| Setup & Safety Check | Inspect wiring, ensure insulation and grounding, perform open-circuit checks | Prevent shorts or unsafe conditions |
| No-load / Idle Measurement | Run inverter unloaded, measure baseline current, voltage, harmonic distortion | Confirm zero-load behavior and idle losses |
| Step Load Ramp | Apply incremental loads (e.g. 10 %, 25 %, 50 %, 75 %, 100 %) | Assess linearity, thermal drift, current stability |
| Full-load Endurance / Soak Test | Run at full load for extended duration (hours to days) | Monitor temperature, drift, cooling effectiveness |
| Transient Tests | Introduce load steps, sudden load removal (load rejection), or overload transients | Measure inverter’s dynamic response, grid-interaction behavior |
| Protection Verification | Deliberately exceed ratings to trigger overcurrent, overvoltage, or thermal protections | Validate that safety circuits engage reliably |
Always wear proper PPE (insulating gloves, goggles) when handling high-voltage systems.
Ensure the load bank and inverter are in good ventilation and clean environment (no dust accumulation).
Use power meters or precision instrumentation to measure input/output, so your efficiency calculations are accurate.
Avoid exceeding design limits of the inverter or load bank – inconsistent or overloaded operation can damage components.
Record all data logs systematically for traceability and future analysis.
To support EEAT and improve trust, you may wish to include:
Testing data and charts (efficiency curve, thermal profiles)
Third-party lab certifications (e.g. IEC, UL, CE compliance)
Case studies or whitepapers where this or similar load banks have been used (e.g. in inverter manufacturers’ labs)
Technical team credentials (engineers, years in power electronics, publications)
Guarantees and warranty terms, e.g. accuracy drift, calibration support
Our AC 380V 30 kW RCD Inverter Load Bank is engineered by a team with over 10 years of experience in power electronics test systems. Designed for R&D, QA, and maintenance verification, it meets international accuracy and safety standards. Each unit is factory-calibrated and accompanied by a calibration certificate. We also offer custom configurations (higher power, alternate voltages, communication interfaces) to support evolving test requirements.