The blast-proof performance of all electricalmachines andeleetric appliances ofQBmodel blast-proofoverhead crane with hook conforms to the preseriptions of GB3836.2-2000 Blast-proof EleetricalApparatus for Explosive Atmosphere Part two:Flameproof Type;the performance of complete machineconforms to the prescriptions ofJB/T5897--2006 Blast-proof BridgeCrane.Thecrane is qualified inspectedby inspection unit ofblast-proof product which is appointed by the state.The cranehas got Certification ofConformity of AnInstrument for ExplosiveAtmosphere.The signs of blast-proof are Exd IIBT4 and ExdⅡCT4 respectively
The produet is applicable to the place in the factory where the capability of transmitting-explosive is nohigher than grade IIB or IIC.and where has mixture of detonatinggas which is composed of flammable gasor steam,whose ignition temperature team belongs to TI-T4 team,and air.Theapplicable danger area isArea I or Area 2(see GB3836.1-2000 for detail)。
The product shallbe operated on ground;it also can be cab-operated as theuser needs.The workingelassis middle.