China HA-1 IS Barrier:
HA-1 IS Barrier
1)Chapter 1 of Part 4 of the “ Steel Ship Classification Rules" of the China Classification Society:
2)YD/T729-94 method for automatic exchanger network access;
3)GF002-9002.4 technique specification for automatic exchanger equipments in technical ministry of posts and tele communication
Colour: Gray
Shell material: Aluminium
Explosive-proof Grade: [Ex ib gb]IIC
IP rating: IP44
With explosion-proof telephone use,IS barrier should be installed in the safety zone