Shenhai a proba de explosión
Segundo GB3836.1—2010 “Parte de atmosferas explosivas 1: Requisitos xerais dos equipos,” Os equipos eléctricos a proba de explosión están deseñados para funcionar en ambientes atmosféricos. As condicións atmosféricas típicas inclúen:
1. Un rango de presión atmosférica de 0.08 a 0.11 MPa;
2. An osíxeno concentration of 21% (por volume) en aire estándar, with other inert gases like nitrogen constituting 79% (por volume);
3. An ambient temperatura between -20°C and 60°C.
The operational environment of electrical equipment is vital for its safety. Por exemplo, explosion-proof electrical devices are often specified to operate in temperatures between -20°C to 40°C. Lower atmospheric pressure, which implies thinner air, can adversely affect the cooling efficiency of electrical devices. Likewise, fluctuations in atmospheric temperature influence cooling performance, directly affecting the device’s operational efficiency.
When electrical equipment’s designed environment diverges from the actual atmospheric conditions, it’s crucial to adjust the parameters, particularly for high-power devices, to maintain safety standards.
The designated operational environment temperature, set during the design phase, outlines the permissible temperature range for the equipment’s operation. This environment temperature forms the foundation for all the equipment’s performance indicators. Discrepancies between the actual and designed environments can lead to underperformance or, en casos graves, avarías. Specifically for equipos eléctricos a proba de explosión, exceeding the prescribed temperature range could compromise the explosion-proof integrity of certain types.
Ademais, the air’s oxygen content significantly affects the safety of explosion-proof electrical devices. Operating equipment intended for explosivo components in an “oxygen-rich” setting may pose risks. En tales ambientes, the altered combustión properties of flammable gases can challenge the normal function of equipment designed for standard conditions.