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United power system and isolated power systems. Relay protection and automation. Differential phase protection of power lines at voltage 330 kV and above. Testing
Document status: Active
United power system and isolated power systems. Relay protection and automation. Differential protection of power lines at voltage 330 kV and above. Testing
Document status: Active
United power system and isolated power systems. Relay protection and automation. Differential phase protection of power lines at voltage 110–220 kV. Testing
Document status: Active
Rough emeralds. Requirements for sorting and primary classification, sorting and certification
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Ship electrical assembly production. Terms and definitions
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Marine ships. International flange connection for the discharge of oily bilge water and oil residues. Dimensions and technical requirements
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