Resistive Inductive Load Banks
The inductive load bank can simulate real-world non-unity power factor loads; offers precisely adjustable load combinations; multiple control modes; modular design and safety protection; and high-precision data acquisition and test reporting: some products can display parameters such as voltage, current, and power factor in real time and export test results.
Resistive-inductive load banks are used in:
(1) Load testing of generator sets (including inductive load conditions)；
(2) Performance verification of UPS and power distribution systems；
(3) Testing of overall power systems in data centers；
(4) Acceptance testing of power systems in ships, offshore engineering, and rail transit；
(5) Load testing of industrial power supplies, inverters, and motor drive systems；
(6) Output and stability verification of energy systems (energy storage, photovoltaic/wind power)
Resistive inductive Load Banks
The resistive inductive load bank accurately simulates inductive loads such as industrial motors and transformers (typical cosφ: 0.3-0.8), and is specially used to test the load capacity, efficiency, power factor correction (PFC) function and dynamic response of power equipment such as generators and UPS in real industrial environments. The core advantage is to provide inductive test loads that strictly conform to actual working conditions, ensuring that the stability and output quality of the equipment when connected to motor loads are reliably verified.
This device has a rated test voltage of 415Vac (400V compatible), supports 50/60Hz frequencies, uses a three-phase three-wire connection, and features an adjustable power factor of 0.8-1.0.
Ratas's 3750 KVA Resistive/Reactive Load Bank is designed for diesel generators, gas generators, and backup power systems to perform factory acceptance testing, on-site commissioning, full-load testing, step-load testing, and annual maintenance tests. They accurately simulate real-world operating conditions with a combination of resistive and inductive loads.
Rata-R100kW/L75kvar/415V/PF0.8 is a 125kVA resistive reactive load bank produced by Rata.
Rata resistive reactive load bank is used to test the rated power factor of engine generator.
The picture on this page shows the rata 500kW/375kvar resistive load bank with rated active power
Rata 4000kW/3000kvar resistive inductive load bank used for ship generator load testing.
Load bank application for marine generator load test include simulate actual load, performance
Resistive inductive load bank usually consists of resistive resistance, power resistance, and
Rata 500kW/375kvar AC 400V resistive inductive load bank mainly used for marine generator,grid
A 300kW/225kvar resistive inductive load bank is generally used for a generator load test. Indoor design
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Comparison of Traditional Resistive-Inductive Load Banks and Rata's High-Density Resistive-Inductive Load Banks
Modular Control Boosts Safety
• Patented modular control, safer and more efficient
• 6,000KW+ power in 6m containers
• 70CM - wide access for easy maintenance
• 6,000KW+ power in 6m containers
• 70CM - wide access for easy maintenance
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• Narrow maintenance access (＜45CM) with exposed terminals, posing high safety risks.
• Inconvenient for equipment maintenance and inspection (side - body movement required in the access).
• Limited power capacity (max 2500KW for 6m container - based units).
• Inconvenient for equipment maintenance and inspection (side - body movement required in the access).
• Limited power capacity (max 2500KW for 6m container - based units).
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Rail Draw Design for Quick Maintenance
• Modular design optimizes space utilization
• Slide - out modules for easy resistor replacement
• Adequate internal space for in - box operations
• Slide - out modules for easy resistor replacement
• Adequate internal space for in - box operations
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• Requires disassembly of internal & external parts
• Narrow internal space with exposed terminals
• High risk of injury to maintenance staff
• Narrow internal space with exposed terminals
• High risk of injury to maintenance staff
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Zoned Control, Easy Checks
• Zoned control for faster fault finding
• Modular design eases maintenance
• Backup modules ensure continuous testing
• Modular design eases maintenance
• Backup modules ensure continuous testing
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• Simple zoning causes complex wiring
• High - power loads make lines tangled
• Faulty nodes hard to locate
• High - power loads make lines tangled
• Faulty nodes hard to locate
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FAQ
1
Why are inductive loads used instead of purely resistive loads to test generators?
（1）Purely resistive loads can only simulate real power (kW) consumption, but cannot simulate the phase lag effect of inductive loads.
（2）Inductive loads can simulate common inductive loads in industry (such as motors, transformers, etc.), allowing the generator to operate at a 0.8 lagging power factor or other power factors, thus more accurately reflecting the system's stress and response capabilities during actual operation.
（3）Combining resistive and inductive testing verifies the generator's output capability for apparent power (kVA).
2
What product forms are available for resistive and inductive load banks?
（1）Rack-mounted: Suitable for laboratory and small system testing；
（2）Containerized high-power load banks: Suitable for testing large-capacity generators or entire data centers；
（3）Mobile load banks: Convenient for on-site commissioning and maintenance
3
What is the significance of using a resistive-inductive load bank for power factor testing?
Power factor represents the phase difference between current and voltage. A resistive-inductive load bank can generate lagging phase load conditions, allowing equipment to be tested under realistic operating conditions (such as motor drives and transformer systems). This allows for the evaluation of the equipment's capacity to handle apparent power (kVA), which is a more accurate representation of real-world usage than purely resistive testing.
4
What safety and protection measures do resistive-inductive load banks have?
Modern resistive-inductive load banks typically include:
（1）Overcurrent/overvoltage protection；
（2）Overtemperature alarm；
（3）Automatic shutdown in case of fan failure or abnormal temperature；
（4）Protection rating design (dustproof, splashproof)；
（5）Local and remote control interlock；
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Contacts: Gong Zhenhua
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