Resistor Banks: Reliable Power Control Solutions by Lomacor Electric

At Lomacor Electric, we specialize in designing, supplying and supporting high quality resistor banks that deliver precise performance for industrial, power generation, and heavy-duty applications. Whether you need to manage load testing, motor control or surge / braking requirements, our resistor banks offer robust, safe and efficient operation.

What Are Resistor Banks?

Resistor banks are assemblies of resistors configured to handle large power loads, dissipate energy as heat, or simulate electrical loads. They are used for:

  • load testing of generators, turbines, or uninterruptible power supply (UPS) systems 

  • dynamic braking and speed control in motors and cranes 

  • neutral grounding and fault current limitation in power systems 

  • discharge of battery banks or testing of electrical equipment under load 

Why Choose Our Resistor Banks

Safety and Durability

Each resistor bank is built with materials and components rated for temperature, insulation, and environmental protection suitable to your application. We ensure that components like grid plates, wiring, and enclosures conform to strong safety standards, minimizing risk of overloads or failure. References in the industry highlight stainless steel grids, high temperature insulation, and robust enclosure designs. 

Custom Design & Flexibility

Because every application is different, Lomacor Electric offers customized resistor bank solutions. Whether you need particular Ohm values, specific duty cycles, cooling methods (natural or forced), or special enclosures (weather proof, IP rated, etc.), we partner with you to match the design to your operational requirements. Industry leaders do the same. 

Efficiency & Performance

Our resistor banks are engineered to maintain stable performance, even under continuous use. Proper cooling, quality resistor alloys (low temperature coefficient), and efficient layouts ensure minimal performance drift and long service life. Many modern units also include modular or stepped load switching for better control and safety. 

Applications Where Our Resistor Banks Excel

Generator and Engine Testing

To ensure reliable output under full load, it’s essential to test generators or engines using resistor banks that mimic real-world demand. This helps verify performance, safety systems, and heat dissipation. 

Motor Control, Braking & Speed Regulation

Industries that use large motors, slip-ring motors, or cranes often rely on resistor banks to moderate inrush currents, handle dynamic braking, or manage start/stop speed control. Lomacor’s solutions provide smooth performance and lower mechanical stress. 

Power System Protection & Grounding

Resistor banks are used for neutral grounding, limiting fault currents, and ensuring safety in power distribution. They help in controlling transient conditions and protecting equipment and personnel. 

Battery & UPS Discharge / Load Simulation

Useful in testing battery banks, UPS systems, or other backup power sources, resistor banks allow safe discharge or simulation of load without risking damage to equipment. 

How to Select the Right Resistor Bank

  • Determine the power rating (kW / MW) you require under continuous and peak loads.

  • Establish the voltage level and whether AC, DC or mixed loads are involved.

  • Choose appropriate cooling method (natural convection vs. forced air) depending on duty cycle.

  • Assess environmental and installation requirements: enclosure protection (IP rating), corrosion resistance, insulation, etc.

  • Specify control and monitoring options: stepped load switching, remote control, temperature sensors, safety interlocks.

Lomacor Electric’s Commitment to Quality & Support

At Lomacor Electric, we believe that supplying hardware is only part of the solution. We give you full support: specification advice, installation guidance, maintenance planning, and after-sales service. Our resistor banks are built for reliability, safety, and long-term performance.

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