Qalabka korantada ee darajada 1aad kuma xirna nidaam qiimeyn gaar ah.
Qalabka korontada ee fasalka II, kala soocidda waxaa lagu go'aamiyaa nooca gaasta gubanaysa ee lala kulmo. Qalabkan ayaa loo sii kala saaray saddex nooc oo aan qarxin karin: IIA, IIB, iyo IIC.
Deegaannada lagu isticmaalo qalabka korantada ee Class I, where combustible gases other than methane are present, compliance with both Class I and Class II explosion-proof standards is mandatory.
Based on the specific properties of the qarxa dust environment, Class III electrical equipment is segmented into three categories: IIIA, IIIB, and IIIC.