Epoxy powder is suspended by air that is pumped into a sealed chamber and through a porous plate into an aerated hopper where the powder floats in a fluidized state.

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Upon completion, our Quality Center team will thoroughly inspect the component(s) to ensure it meets your exact specifications.

After you have tackled the operating environment and geometry necessary, you will want to consider power requirements to complete your design. Our team inside the Insulation and Coating center can produce the best part at the greatest value.

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Tensile strength on raw and plated copper bar is in the range of 7500 PSI. UL rating is 130 Cº. Epoxy powder coating's high dielectric strength can be varied based on the application process, thickness, and component preparation.

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For OEMs in need of insulated copper or aluminum conductors for tight-fitting, durable bus systems, Storm Power Components provides the expertise, capabilities, and equipment to manufacture high dielectric, epoxy powder-coated bus bar.

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Epoxy powder coating is a free-flowing, thermosetting dry powder. Think of this process as a way of "melting" paint over a bus bar's surface to create a durable, protective surface with thickness ranging from 6 to 120 mils or .006 to .120 inches. When the epoxy powder cures, a cross-link occurs increasing molecular weight and insulation capability.

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Epoxy powder is chemical resistant and one of the oldest powder paints used in the electronics industry. It not only protects against corrosion but carries a high insulation rating of 800 volts per mil (.001 inches) at a minimum of 10 mil (.010 inches). Due to safety considerations, it is recommended that a Hipot test is performed rather than rely on film thickness.

Before the epoxy powder is sprayed onto the part, Storm conducts a set up procedure to determine the amount of powder deposited, which is controlled by voltage, airflow and powder flow. Next, this electrostatic system imparts a negative electric charge on the powder to deposit it onto the component that has been grounded.

Bus bars are then placed in Storm's curing oven that has the capacity to handle parts up to 12’ in length. As the thermo-set powder is heated, it begins to melt and flow out, enabling it to form a higher molecular weight polymer fusing both to itself and the substrate.

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Then, heated copper connectors are lowered into the hopper, causing the powder to adhere to the surface and then flow out. This creates a smooth, durable and continuous epoxy coating that is thicker than the coating on sprayed copper components.

Epoxy Powder Coated Insulation offers a high dielectric strength while creating durable insulation, impervious to most elements, and allows for closer bus bar location in a system ideal for single conductors or multiple conductor assemblies that may have numerous forms. Epoxy powder coating is also suited for insulating thick conductors, in addition to conductors with multiple electrical contact points.

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The choice between electrostatic spraying or fluidized bed powder coated is determined by the dielectric strength of a custom copper or aluminum bus bar. The general rule of thumb is that high-voltage bar should be fluid dipped to achieve a thickness greater than .12 inches. Size and shape also play a part. Bus bars or other components with flat, open geometry are more suitable for spraying, while components with turns and bends are better suited for fluidized bed powder coating.