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Insulation Powder Coating
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DESCRIPTION Insulation powder coating has a high dielectric strength, which is a necessary quality for electrical insulation to protect manufacturing people, service technicians, and customers who work on electrical systems. With the proper application technique, most parts can be uniformly coated to ensure a consistent insulation barrier. The material eliminates insulation cut-through from the high-voltage spikes that are often generated in cable systems. Prototype and short-run requirements, in particular, benefit from this insulating process by reducing the need for costly fixtures typically required to insulate or laminate multiple conductor assemblies. What’s more, the smooth and uniform finish that the epoxy provides is especially suited for protecting motor components, switchgear, cables, and other parts. Insulation powder coating used for these types of electrical insulation applications are rated as class B service coatings (266 F/130 C) and have a UL 94 V-0 flammability rating.
Insulation powder coating is sometimes used in place of conventional flexible types of insulated cables. Preformed conductors can be made with smaller radius bends than flexible cables for more efficient use of space. First, a single copper or aluminum conductor is stamped and formed into one homogeneous component. By calculating the most appropriate width-to-thickness ratio needed for the required current, the airflow within the system can be significantly improved. In addition, crimped-on terminations can be eliminated to reduce voltage drops and component count, both of which improve reliability—especially in systems under heavy electrical load or mechanical vibration.
Multiple conductor assemblies can also use the same principles to minimize the cost and lead time of special laminated assemblies. The simplest approach for insulating multiple conductor assemblies is to powder coat each conductor and fastens them together with an epoxy resin adhesive or non-conductive fasteners. This secures the components, and the single, modular assembly contains fewer parts. Alternatively, conductors can be fastened together with a sheet of dielectric insulation between conductors and a thin film of double-sided adhesive. These materials do not need heat to activate them, and they improve the system’s structural integrity and electrical performance.
ADVANTAGES ●Outstanding chemical resistance, including motor oil, fuel, etc. ●100% solids content (VOC-free) ●Low coating thickness required to achieve maximum performance ●High coating thickness (100+ mil) to achieve medium voltage protection ●Excellent cut-through resistance ●Excellent edge coverage ●High service temperatures ●Capability to provide a range of thermal conductivity ●Both induction cure and oven cure chemistries ●Reduced cost vs. traditional slot liners
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