Explosion proof sign is ExnR, II, T4Gc LED lamp, whether it can be used in dust room, equipment room, lighting fixtures.
The dust level in the shop is determined by the design. That is to say, when a place is used for dust removal, it should be decided before arranging the internal layout and ordering equipment. It can be determined by not talking about the situation.
Code for design of electric installations for explosive environment of GB 50058GB 3836 explosive environmentGB 12476. electrical equipment for flammable dust atmospheres
ExnR II T4Gc, certified by third parties, complies with the requirements for explosion protection.Ex certification mark; nR limits respiration (external fuel can not be entered at random); II plant uses (non mine); T4 surface temperature is less than 135 degrees; Gc protection level (gas 2 zone).Generally speaking, the explosion-proof requirements of the gas 2 zone are much higher than the dust standard, and ExnR II T4Gc is a common explosion-proof lamp logo.
