The integral general and integral explosion-proof multi-turn valve electric device consists of ZB5-ZB40, ZC45-250, ZB5-ZB40B and ZC45-ZC250B valve electric device with additional control electrical components, while ZC350-ZC1000BZ consists of ZC180-250BZ superimposed deceleration device. This series of valves have built-in control module, large capacity contactor, which can no longer use the electronic control box, so it has small size and full function (with automatic phase sequence correction and phase absence protection function, remote control has four ways, plus emergency valve closing function), simple installation and wiring (with only three-phase power line, it can be operated on site), convenient maintenance (electrical circuit is open). Through DC24V voltage control, electrical components are connected by connectors.
The performance indicators of this product meet the requirements of JB/T8528-1997 "Technical Conditions for General Valve Electric Devices". The explosion-proof performance indicators meet the requirements of GB3836.1-2000 "General Requirements for Explosive Environmental Explosion-proof Electrical Equipment", GB3836.2-2000 "Flameproof Electrical Equipment d" for Explosive Environmental Explosion-proof Electrical Equipment and JB/T8529-1997 "Technical Conditions for Flameproof Valve Electrical Devices". Fixed.