... in high building, emporia, airdrome, tunnel, chemical plant, nuclear power plant, steam ect especial and important site.2.Executive Standard ... shed protect grade(IP code)2.4 IEC76 power transformer2.5 IEC723 dry power transformer3.Type and Significationvoltage grade/ rated capacity/ ... stop the breeze machine, and report to the police to jump.4.7 Small size, light weight, little covering space, ...