500kW Resistive AC Load Bank Customized Manufacturer Rata
Product Introduction
Designed specifically for outdoor operational scenarios, this 500kW three-phase AC dummy load bank integrates a purpose-built canopy to shield critical components from environmental factors.
It meets the IP54 ingress protection rating, ensuring reliable performance against dust ingress and splashing water—ideal for harsh or unpredictable outdoor conditions.
Enclosure drawings (mm)
Enclosure dimensions
Load bank control system
Main Parameters
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Model No.: S 500 L |
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Country of origin |
China |
Protection |
Thermal emergency cut out; Air flow switch; Fan overload protection; Emergency stop |
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Active power capacity(kW PF: 1.0) |
500 |
Control voltage(Auxiliary power supply) |
400Vac 3phases 5 wires |
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Active power step load(kW) |
1+2+2+5+10+10+20+50+100*4 |
Control connections |
Fast connector + GN connections + RJ45 interface |
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Rated testing voltage |
400 Vac |
Airflow volume(Approx. CMM) |
1250 CM/Min. |
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Frequency |
50Hz. |
Airflow direction |
Horizontal |
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Phases |
3 |
Load switching contactor type |
AC contactors |
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Wires(Star connection) |
4 |
Rated maximum ambient temp. operation |
+60°C / +140°F |
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Load step resolution |
1kW |
Rated minimum ambient temp. operation |
-20°C / -4°F |
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Voltage Tolerance (Short Term Operation) |
+5% |
Altitude rating |
2000 [m.a.s.l] |
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Load Element Tolerance |
± 2.5% |
Control chamber IP rating |
IP 54 outdoor |
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Insulation Test |
700 Vac |
Enclosure material |
Carbon steel with powder coated |
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Load Connections |
Copper busbars |
Portabality |
4 universal casters |
Main parts
Applications
A 500kW 400V AC load bank is a high-power testing device that simulates electrical loads in a controlled environment, which provides a safe, repeatable, and measurable method to test and validate power sources and distribution systems before being deployed in mission-critical applications. It is mainly used in the following applications:
● Conducting acceptance tests after installation or maintenance
● Checking generator stability during step load changes
● Verifying inverter output capacity
● Preventive maintenance to ensure backup reliability
● Load transfer testing between utility and backup power
● Ensuring cooling and distribution systems meet demand
● Absorbing excess power for grid stability and demand response
● Compliance testing with DNV, ABS, Lloyd's and other standards
● Quality assurance before delivery to customers
Application fields