One of the most important factors that determine the service life and, in general, the performance of explosion-proof LED lights is the condensation formation. After all, the water that enters the body is the crucial cause of LED failure.
Usually, sealed bodies protect from dust and moisture from the outside, but, unfortunately, they cannot prevent the formation of condensation inside. It happens due to the natural temperature difference: when the light is turned on, the air temperature inside the plafond increases. Therefore, its humidity also increases. But in case of a sharp temperature change (for example, precipitation, weather changes, etc.), the air above surfaces passes through the so-called “dew point”, which leads to the formation of condensation, which contributes to the oxidation of internal parts.
And if in the field of general industrial street lighting, the situation has already begun to be corrected because manufacturers started to use pressure equalization valves, then in explosion-proof lighting, where these valves should have increased reliability (to prevent the transmission of an explosion from inside the housing to the atmosphere, but, meanwhile, freely pass air containing moisture), such pressure compensation systems are practically not used.
It always results in a significant amount of water accumulated in the luminaire, which can lead to a short circuit, the destruction of the body due to icing, or oxidation of the contact surfaces. It will cause explosion-proof lighting failure.
We decided to deal with it: we came up with a special valve installed inside the luminaire. It relieves excess pressure and removes hot air, thereby leveling the temperature. Therefore, a condensation situation generally cannot happen.