Product Details Power Grounding Resistance ? 4 Ohms Air Pressure 86-106kpa. Humidity Requirements 40%-80%, No Condensation Fiber Laser Metal Sheet Cutting Machines By Miracle Machineries Offer A Wide Variety At MIRACLE MACHINERIES, we specialize in designing, manufacturing, and exporting state-of-the-art fiber laser metal sheet cutting machines that are engineered to meet the diverse needs of our clients worldwide. Our machines utilize cutting-edge fiber laser technology to deliver precise and efficient cutting solutions for various types of metal sheets. Working Environment Requirement Humidity requirements are 40%-80%, no condensation. Power grid requirements: 380V; 50Hz/60A Power supply grid fluctuations: 5%, the grid ground wire meets international requirements. In areas with a voltage amplitude of 5% or more, an automatic voltage regulator and a current stabilizing device should be installed. Power grounding resistance: ? 4 ohms. There should be no strong electromagnetic interference near the installation equipment. Avoid radio transmitters or relay stations around the installation site. Ground amplitude: less than 50um; vibration acceleration: less than 0.05g. Avoid a lot of machine tools such as stamping in the vicinity. Air pressure: 86-106kpa. Equipment space requirements are guaranteed to be smoke-free and dust-free, avoiding dusty working environments such as metal polishing and grinding. An anti-static floor must be installed and the shielded cable must be connected. The water quality of the working cooling circulating water is strictly required, and pure water, deionized water or distilled water must be used Warranty Of Machine 24 months, beginning from the date of machine arrival, including laser head, controller, motor and driver, guide rail, gear and rack, slider, transformer. Warranty Of Laser Source Beginning from the date of laser module tag, details as following: IPG: 24 months for YLR and for YLS RAYCUS or MAX: 24 months for 1000W and 1500W and 24 months for 2000W or above 2000W. Warranty Of Consumable Parts No warranty for consumable parts, including QBH, Q+, optical fiber, glass and lens, ceramic ring, nozzle, switch, lamp, fuse, table blade, radio frequency line, mouse, keyboard, wireless controller, tank chain, all pipe and joint, belts, trolley, etc.