Explosion protection issues for control boxes
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May I ask the experts: is it better to use an explosion-proof type for the control box on site, or a positive pressure ventilation type? The box contains a PLC, frequency converters, measuring instruments, etc. Thank you!
They all serve the same purpose; as long as the environment is suitable, it works. Generally, flameproof ones are used
Explosion-proof types have high initial investment costs, positive pressure ventilation incurs high operating expenses, and power must be cut off to access them during maintenance. How to choose depends on the conditions of the construction unit; generally, explosion-proof types are preferred.
Problems can also arise with flameproof heat dissipation; positive pressure ventilation during long-term operation
It is recommended to use explosion-proof models; although the initial investment is high, maintenance requirements are low. Positive pressure ventilation incurs high operating costs, and power must be cut off to carry out repairs; it is also unsafe when there are issues with the air supply
I’ve used them all; it doesn’t matter as long as they can solve the heat dissipation problem.
It’s a positive pressure ventilation type, but it depends on whether there is an air compressor on site. If there isn’t an air compressor available, asking the owner to purchase one would not be cost-effective.
Lu Xun said: A true warrior dares to face the gushing blood, dares to confront the doors that have burst open