WALT POWER delivered a 500kW outdoor portable resistive load bank configured for 480V, 60Hz, three-phase operation. The unit is designed for generator load testing, with a weather-resistant enclosure, seven load steps, and both local and Windows PC control options.
The 480V/60Hz configuration is particularly relevant to industrial power systems using this voltage and frequency, including many installations in North America.
Main Specifications
| Item | Specification |
|---|---|
| Model | WGP-LB-500kW |
| Maximum Resistive Load | 500kW |
| Rated Voltage | 480V |
| Frequency | 60Hz |
| Phase | Three-phase |
| Power Factor | 1.0 |
| Control System | Local control or Windows PC |
| Load Steps | 10kW + 20kW + 20kW + 50kW + 100kW + 100kW + 200kW |
| Specified Operating Temperature | -10°C to +50°C |
| Enclosure | Weather-resistant outdoor design |
| Warranty | 12 months |
Outdoor Design and Load Testing Applications
This 500kW resistive load bank is designed for outdoor generator testing applications where equipment may be exposed to changing weather conditions. Its enclosed construction provides protection for the internal electrical components, although actual operating conditions must remain within the equipment's specified environmental limits.
For generator testing, the seven load steps allow operators to apply resistive load progressively rather than immediately connecting the full 500kW capacity.
The unit can be operated locally or through Windows PC software for monitoring and control. Test data can also be saved and printed for review.
Why the 480V 60Hz Configuration Matters
One detail I always recommend checking before selecting a load bank is the generator's output voltage and frequency.
This unit was configured for 480V, 60Hz, three-phase operation. It is therefore different from a 400V, 50Hz load bank, even when both units have the same nominal 500kW capacity.
A 480V/60Hz resistive load bank can be used for applications such as industrial generator testing, factory acceptance testing, and scheduled standby generator load testing, provided the electrical ratings, connection arrangement, and test procedures are suitable.
For diesel generators that regularly operate at low load, controlled load bank testing can also help address operating conditions associated with wet stacking. The test load and duration should follow the engine manufacturer's recommendations.
Selecting the Right Load Bank
For a 500kW load bank, I recommend confirming the following before placing an order: generator voltage, frequency, required test capacity, load step arrangement, control method, and installation environment.
These details matter just as much as the maximum kW rating. A load bank with the correct capacity but an unsuitable voltage or control arrangement may not meet the project's testing requirements.
WALT POWER supplies resistive load banks in different capacities and configurations for generator testing and industrial power applications.
