... to 30t small volume/ lightweight convenient operation 220v 1 phase electric wire rope hoist Introduction of electric hoist1 ... as to prohibit the chains from exceeding for safety.3. Transfomer: 24V/36V/48V transformer device. This ... guarantees the safe use while raining.5. Inverse phase sequence protecting device: It is the special ... 309,12,18,24,30163.5 0.35/3.5189,12,18204209,12,18The electric wire rope ...