Encapsulation of Components and a Low Energy Circuit for Hazardous Locations

摘要

Embodiments of the disclosure provide an encapsulated compressor overload, an encapsulated compressor relay start, an encapsulated head pressure control switch and a wiring diagram for a circuit for air conditioning units which prevent gases from being ignited by means of encapsulating sparking components, use of solid-state switching devices, and/or wiring circuits in such a way that open contacts do not contain enough energy to produce a spark capable of igniting the atmosphere.

主权项

1. An apparatus for preventing ignition of flammable gases and vapors in an environment surrounding an air conditioning system, the apparatus comprising:
a sparking component for use in the air conditioning system, the sparking component receiving electrical power through one or more electrically live parts, the sparking component potentially producing sparks from one or more of the electrically live parts; and an encapsulation material forming an air tight cover surrounding the sparking component such that sparks created by the sparking component are complete y contained within the encapsulation material and prevented from coming into contact with the flammable gases and vapors.