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Information × Registration Number 0222U005057, 0121U114493 , R & D reports Title Perform examination of documentation and study of the possibility of periodic use of Ulefone Armor 8 smartphones in underground conditions of mines of PJSC DTEK PAVLOGRADVUGIL popup.stage_title Head Krukovskyi Oleksandr Р., Доктор технічних наук Registration Date 13-12-2022 Organization Institute of Geotechnical Mechanics named after MS Polyakova of the National Academy of Sciences of Ukraine popup.description2  As a result of examination of the provided documentation, analysis of regulatory documents and technical review of the Ulefone Armor 8 equipment sample and its waterproof test, the following was established: – Ulefone Armor 8 devices belong to portable electrical devices of general purpose and do not have a mining version; – Ulefone Armor 8 devices are marked Ex ib II C T4 Gb and Ex ib D21 T130°C according to the requirements of SAC/TC9 – Technical Committee for Standardization of Explosion-Proof Electrical Equipment of the People's Republic of China (China). They have an intrinsically safe electrical circuit. Safety is ensured in normal operation, the type of protection is based on the limitation of electric energy (power) in the electric discharge and the temperature of the elements of the electrical equipment to a value below the level that causes ignition from sparking or thermal exposure, the maximum temperature of the equipment is 1300С; – the shell of Ulefone Armor 8 devices has, according to the JIS/IEC standard, a degree of protection against dust and IP68 waterproofness (according to GOST 14254) in accordance with the requirements of item I.2 of GOST 22782.3 – a dustproof device that can withstand prolonged immersion in water to a depth of more than 1 m. Product Description popup.authors Zemlyana Yulia V. Kurnocov Sergey A popup.nrat_date 2022-12-13 Close