Russian standards
Stabilized low voltage power units type 591 for electronics. General specifications
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Explosive atmospheres. Part 10-1. Classification of areas. Explosive gas atmospheres
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Winding wires. Test methods. Part 4. Electrical properties
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Gas burners, gas/oil burner and pulverized solid fuel/gas burners of steam and hot-water boilers. Acceptance test. Basis requirements
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Brush holders and brackets for traction and electrical machines. Serrate rifling. Dimensions
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