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BS PD CEN ISO/TR 20659‑2:2024 Rheological test methods. Fundamentals...

BS PD ISO/IEC TS 18013‑7:2024 Historical[ Withdrawn ] Personal...

BS PD ISO/TS 20790:2024 Oil and gas industries including lower carbon...

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IEC 61053-1 (1991-03) IEC 61053-1:1991 Helical-scan video tape cassette system using 12,65 mm (0,5 in)magnetic tape on type Beta format - FM audio recording - Part 1:625 line-50 field systems
IEC 61053-2 (1991-03) IEC 61053-2:1991 Helical-scan video tape cassette system using 12,65 mm (0,5 in)magnetic tape on type Beta format - FM audio recording - Part 2:525 line-60 field systems
IEC 61053-1 (1991-03) IEC 61053-1:1991 Helical-scan video tape cassette system using 12,65 mm (0,5 in)magnetic tape on type Beta format - FM audio recording - Part 1:625 line-50 field systems
IEC/TR 60034-16-2 (1991-02) IEC TR 60034-16-2:1991 Rotating electrical machines - Part 16: Excitation systems for synchronous machines - Chapter 2: Models for power system studies
IEC 60994 (1991-02) IEC 60994:1991 Guide for field measurement of vibrations and pulsations in hydraulic machines (turbines, storage pumps and pump-turbines)
IEC 61051-2-2 (1991-02) IEC 61051-2-2:1991 Varistors for use in electronic equipment - Part 2: Blank detail specification for zinc oxide surge suppression varistors. Assessment level E
IEC 61051-2 (1991-02) IEC 61051-2:1991 Varistors for use in electronic equipment - Part 2: Sectional specification for surge suppression varistors
IEC 60343 (1991-01) IEC 60343:1991 Recommended test methods for determining the relative resistance of insulating materials to breakdown by surface discharges
IEC 60072-1 (1991-02) IEC 60072-1:1991 Dimensions and output series for rotating electrical machines - Part 1: Frame numbers 56 to 400 and flange numbers 55 to 1080
IEC 60721-1 (1990-12) IEC 60721-1:1990 Classification of environmental conditions - Part 1: Environmental parameters and their severities
IEC 60721-2-6 (1990-12) IEC 60721-2-6:1990 Classification of environmental conditions. Part 2: Environmental conditions appearing in nature. Earthquake vibration and shock
IEC 60953-1 (1990-12) IEC 60953-1:1990 Rules for steam turbine thermal acceptance tests. Part 1: Method A - High accuracy for large condensing steam turbines