Guarantee 21

Guarantee 21, Total:329 items.

The international standard classification for "Guarantee 21" includes: .

The Chinese standard classification for "Guarantee 21" includes: Aircraft maintenance and management .

未注明发布机构

Professional Standard - Aviation

HB 7732-2003 Terminology for aircraft support equipment

German Institute for Standardization

DIN EN 54-21:2006 Fire detection and fire alarm systems - Part 21: Alarm transmission and fault warning routing equipment; German version EN 54-21:2006
DIN EN 61643-21:2013 Low voltage surge protective devices - Part 21: Surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods (IEC 61643-21:2000 + corrigendum 2001 + A1:2008, modified + A2:2012); German ve
DIN EN 60601-2-21:2010 Medical electrical equipment - Part 2-21: Particular requirements for the basic safety and essential performance of infant radiant warmers (IEC 60601-2-21:2009); German version EN 60601-2-21:2009
DIN EN 54-21:2006-08 Fire detection and fire alarm systems - Part 21: Alarm transmission and fault warning routing equipment; German version EN 54-21:2006
DIN EN 61643-21:2010 Low voltage surge protective devices - Part 21: Surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods, (IEC 61643-21:2000 + Corrigendum 2001 + A1:2008, modified); German version EN
DIN EN 60601-2-21:2017 Medical electrical equipment - Part 2-21: Particular requirements for the basic safety and essential performance of infant radiant warmers (IEC 60601-2-21:2009 + Cor.:2013 + A1:2016); German version EN 60601-2-21:2009 + A11:2011 + A1:2016
DIN EN 60749-21:2012 Semiconductor devices - Mechanical and climatic test methods - Part 21: Solderability (IEC 60749-21:2011); German version EN 60749-21:2011
DIN EN 60598-2-21:2015 Luminaires - Part 2-21: Particular requirements - Rope lights (IEC 60598-2-21:2014); German version EN 60598-2-21:2015
DIN EN 61158-6-21:2013 Industrial communication networks - Fieldbus specifications - Part 6-21: Application layer protocol specification - Type 21 elements (IEC 61158-6-21:2010); English version EN 61158-6-21:2012, only on CD-ROM
DIN EN 61386-21:2011 Conduit systems for cable management - Part 21: Particular requirements - Rigid conduit systems (IEC 61386-21:2002); German version EN 61386-21:2004 + A11:2010
DIN EN 61158-5-21:2013 Industrial communication networks - Fieldbus specifications - Part 5-21: Application layer service definition - Type 21 elements (IEC 61158-5-21:2010); English version EN 61158-5-21:2012, only on CD-ROM
DIN EN 62047-21:2015 Semiconductor devices - Micro-electromechanical devices - Part 21: Test method for Poisson's ratio of thin film MEMS materials (IEC 62047-21:2014); German version EN 62047-21:2014
DIN EN 60598-2-21 Berichtigung 1:2017 Luminaires - Part 2-21: Particular requirements - Rope lights (IEC 60598-2-21:2014); German version EN 60598-2-21:2015, Corrigendum to DIN EN 60598-2-21 (VDE 0711-2-21):2015-10, (IEC 60598-2-21:2014/COR1:2016); German version EN 60598-2-21:2015/AC:2017
DIN EN 61158-4-21:2013 Industrial communication networks - Fieldbus specifications - Part 4-21: Data-link layer protocol specification - Type 21 elements (IEC 61158-4-21:2010); English version EN 61158-4-21:2012, only on CD-ROM
DIN EN 60255-21-3:1995-11 Electrical relays - Part 21: Vibration, shock, bump and seismic tests on measuring relays and protection equipment; section 3: Seismic tests (IEC 60255-21-3:1993); German version EN 60255-21-3:1995
DIN EN 61158-3-21:2013 Industrial communication networks - Fieldbus specifications - Part 3-21: Data-link layer service definition - Type 21 elements (IEC 61158-3-21:2010); English version EN 61158-3-21:2012, only on CD-ROM
DIN EN 16602-70-21:2015 Space product assurance - Flammability testing for the screening of space materials; English version EN 16602-70-21:2014
DIN EN 60317-21:2014 Specifications for particular types of winding wires - Part 21: Solderable polyurethane enamelled round copper wire overcoated with polyamide, class 155 (IEC 60317-21:2013); German version EN 60317-21:2014
DIN VDE 0641-21:2018 Electrical accessories - Circuit-breakers for overcurrent protection for household and similar installations - Part 21: Selective main circuit-breakers
DIN ISO 21940-21:2013 Mechanical vibration - Rotor balancing - Part 21: Description and evaluation of balancing machines (ISO 21940-21:2012)
DIN EN 61788-21:2016 Superconductivity - Part 21: Superconducting wires - Test methods for practical superconducting wires - General characteristics and guidance (IEC 61788-21:2015); German version EN 61788-21:2015
DIN EN IEC 61158-6-21:2020 Industrial communication networks - Fieldbus specifications - Part 6-21: Application layer protocol specification - Type 21 elements (IEC 61158-6-21:2019); English version EN IEC 61158-6-21:2019, only on CD-ROM
DIN VDE 0641-21:2011 Electrical accessories - Circuit-breakers for overcurrent protection for household and similar installations - Part 21: Selective main circuit-breakers
DIN EN 60519-21:2009 Safety in electroheat installations - Part 21: Particular requirements for resistance heating equipment - Heating and melting glass equipment (IEC 60519-21:2008); German version EN 60519-21:2009
DIN ISO 16000-21:2014 Indoor air - Part 21: Detection and enumeration of moulds - Sampling from materials (ISO 16000-21:2013)
DIN EN 61857-21:2010 Electrical insulation systems - Procedures for thermal evaluation - Part 21: Specific requirements for general-purpose models - Wire-wound applications (IEC 61857-21:2009); German version EN 61857-21:2009
DIN EN 61534-21:2015 Powertrack systems - Part 21: Particular requirements for powertrack systems intended for wall and ceiling mounting (IEC 61534-21:2014); German version EN 61534-21:2014
DIN ISO 21940-21:2023 Mechanical vibration - Rotor balancing - Part 21: Description and evaluation of balancing machines (ISO 21940-21:2022); Text in German and English
DIN EN 61000-4-21:2011 Electromagnetic compatibility (EMC) - Part 4-21: Testing and measurement techniques - Reverberation chamber test methods (IEC 61000-4-21:2011); German version EN 61000-4-21:2011
DIN EN IEC 61158-5-21:2020 Industrial communication networks - Fieldbus specifications - Part 5-21: Application layer service definition - Type 21 elements (IEC 61158-5-21:2019); English version EN IEC 61158-5-21:2019, only on CD-ROM
DIN EN IEC 61386-21:2021 Conduit systems for cable management - Part 21: Particular requirements - Rigid conduit systems (IEC 61386-21:2021); German version EN IEC 61386-21:2021 + A11:2021
DIN EN 13108-21:2016 Bituminous mixtures - Material specifications - Part 21: Factory Production Control; German version EN 13108-21:2016
DIN EN 60255-21-1:1996-05 Electrical relays - Part 21: Vibration, shock, bump and seismic tests on measuring relays and protection equipment; section 1: Vibration tests (sinusoidal) (IEC 60255-21-1:1988); German version EN 60255-21-1:1995
DIN EN IEC 61158-4-21:2020 Industrial communication networks - Fieldbus specifications - Part 4-21: Data-link layer protocol specification - Type 21 elements (IEC 61158-4-21:2019); English version EN IEC 61158-4-21:2019, only on CD-ROM
DIN EN IEC 61158-3-21:2020 Industrial communication networks - Fieldbus specifications - Part 3-21: Data-link layer service definition - Type 21 elements (IEC 61158-3-21:2019); English version EN IEC 61158-3-21:2019, only on CD-ROM
DIN EN 62056-21:2003 Electricity metering - Data exchange for meter reading, tariff and load control - Part 21: Direct local data exchange (IEC 62056-21:2002); German version EN 62056-21:2002, text in English
DIN EN ISO 16610-21:2013 Geometrical product specifications (GPS) - Filtration - Part 21: Linear profile filters: Gaussian filters (ISO 16610-21:2011); German version EN ISO 16610-21:2012
DIN EN 60794-2-21:2012 Optical fibre cables - Part 2-21: Indoor optical fibre cables - Detailed specification for multi-fibre optical distribution cables for use in premises cabling (IEC 60794-2-21:2012); German version EN 60794-2-21:2012
DIN EN 60255-21-2:1996-05 Electrical relays - Part 21: Vibration, shock, bump and seismic tests on measuring relays and protection equipment; section 2: Shock and bump tests (IEC 60255-21-2:1988); German version EN 60255-21-2:1995
DIN EN 60794-1-21:2021 Optical fibre cables - Part 1-21: Generic specification - Basic optical cable test procedures - Mechanical tests methods (IEC 60794-1-21:2015 + A1:2020); German version EN 60794-1-21:2015 + A1:2020
DIN EN 60512-21-1:2010 Connectors for electronic equipment - Tests and measurements - Part 21-1: R.F. resistance tests - Test 21a: R.F. shunt resistance (IEC 60512-21-1:2010); German version EN 60512-21-1:2010

European Committee for Standardization (CEN)

EN 54-21:2006 Fire detection and fire alarm systems - Part 21: Alarm transmission and fault warning routing equipment
prEN 60601-2-21-1992 Draft IEC 601-2-21: medical electrical equipment; part 2: particular requirements for the safety of infant radiant warmers
prEN ISO 3262-21 Extenders - Specifications and methods of test - Part 21: Silica sand (unground natural quartz) (ISO/DIS 3262-21:2022)
EN 12697-21:2003 Bituminous mixtures - Test methods for hot mix asphalt - Part 21: Indentation using plate specimens Incorporating corrigendum February 2007 [Superseded: BSI BS EN 12697-21, BSI BS EN 12697-21]
prEN ISO 16610-21 Geometrical product specifications (GPS) - Filtration - Part 21: Linear profile filters: Gaussian filters (ISO/DIS 16610-21:2023)

SE-SIS

SIS SS 14 21 21-1992 Steel — Hot dip AIZn-coated steel sheet — Structural quality — SS-steel 21 21
SIS 14 54 21-1966 Tin bronze 54 21
SIS 14 21 44-1971 Structural steel
SIS 14 21 73-1975 Structural steel
SIS 14 74 21-1967 Lead alloy 74 21
SIS SEN 21 21-1960 The protective layer. Electronic equipment
SIS 14 21 03-1974 Pressure vessel steel
SIS SS 14 21 72-1990 Structural steel — SS-steel 21 72
SIS SS 14 38 21-1990 Welding electrodes — Tubular wire 38 21
SIS SS 14 21 74-1990 Structural steel- SS-steel 21 74

Lithuanian Standards Office

LST EN 61643-21-2002 Low voltage surge protective devices. Part 21: Surge protective devices connected to telecommunications and signalling networks. Performance requirements and testing methods (IEC 61643-21:2000+AC:2001)
LST EN 61643-21-2002/A2-2013 Low voltage surge protective devices -- Part 21: Surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods (IEC 61643-21:2000/A2:2012)
LST EN 61643-21-2002/A1-2009 Low voltage surge protective devices -- Part 21: Surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods (IEC 61643-21:2000/A1:2008, modified)
LST EN 60255-21-3-2001 Electrical relays. Part 21: Vibration, shock, bump and seismic tests on measuring relays and protection equipment. Section 3: Seismic tests (IEC 60255-21-3:1993)
LST EN 60950-21-2004 Information technology equipment. Safety. Part 21: Remote power feeding (IEC 60950-21:2002)
LST EN 60255-21-1-2001 Electrical relays. Part 21: Vibration, shock, bump and seismic tests on measuring relays and protection equipment. Section 1: Vibration tests (sinusoidal) (IEC 60255-21-1:1988)
LST EN 60255-21-2-2001 Electrical relays. Part 21: Vibration, shock, bump and seismic tests on measuring relays and protection equipment. Section 2: Shock and bump tests (IEC 60255-21-2:1988)
LST EN 60896-21-2004 Stationary lead-acid batteries. Part 21: Valve regulated types. Methods of test (IEC 60896-21:2004)
LST EN 61754-24-21-2009 Fibre optic interconnecting devices and passive components - Fibre optic connector interfaces - Part 24-21: Type SC-RJ connectors with protective housings based on IEC 61076-3-106, variant 06 (IEC 61754-24-21:2009)
LST EN 61158-6-21-2012 Industrial communication networks - Fieldbus specifications - Part 6-21: Application layer protocol specification - Type 21 elements (IEC 61158-6-21:2010)
LST EN 61158-5-21-2012 Industrial communication networks - Fieldbus specifications -- Part 5-21: Application layer service definition - Type 21 elements (IEC 61158-5-21:2010)
LST EN 60749-21-2011 Semiconductor devices - Mechanical and climatic test methods -- Part 21: Solderability (IEC 60749-21:2011)
LST EN 61158-3-21-2012 Industrial communication networks - Fieldbus specifications -- Part 3-21: Data-link layer service definition - Type 21 elements (IEC 61158-3-21:2010)
LST EN 61158-4-21-2012 Industrial communication networks - Fieldbus specifications -- Part 4-21: Data-link layer protocol specification - Type 21 elements (IEC 61158-4-21:2010)
LST EN 61754-21-2005 Fibre optic connector interfaces. Part 21: Type SMI connector family for plastic optical fibre (IEC 61754-21:2005)
LST EN 62054-21-2005 Electricity metering (a.c.). Tariff and load control. Part 21: Particular requirements for time switches (IEC 62054-21:2004)
LST EN 60317-21+A1-1999 Specifications for particular types of winding wires -- Part 21: Solderable polyurethane enamelled round copper wire overcoated with polyamide, class 155 (IEC 60317-21:1990+IEC 60317-21:1990/A1:1997)
LST EN 61534-21-2007 Powertrack systems - Part 21: Particular requirements for powertrack systems intended for wall and ceiling mounting (IEC 61534-21:2006)

International Organization for Standardization (ISO)

ISO/R 21:1956
ISO 1382 DAD 21:1992 Rubber; vocabulary; addendum 21
ISO/IEC 21000-21:2013 Information technology.Multimedia framework (MPEG-21).Part 21: Media Contract Ontology
ISO/IEC 21000-21:2017 Information technology - Multimedia framework (MPEG-21) - Part 21: Media contract ontology

US-CFR-file

CFR 21-21.61-2013 Food and Drugs. Part21:Protection of privacy. Section21.61:Exempt systems.
CFR 10-73.21-2014 Energy. Part73:Physical protection of plants and materials. Section73.21:Protection of Safeguards Information: Performance requirements.

VDE - VDE Verlag GmbH@ Berlin@ Germany

VDE 0805-21-2003 Einrichtungen der Informationstechnik - Sicherheit - Teil 21: Fernspeisung (IEC 60950-21:2002); Deutsche Fassung EN 60950-21:2003
VDE 0711-2-21-2015 Leuchten - Teil 2-21: Besondere Anforderungen - Lichtschlaeuche (IEC 60598-2-21:2014); Deutsche Fassung EN 60598-2-21:2015
VDE 0800-500-21-2019 Industrielle Kommunikationsnetze - Profile - Teil 5-21: Feldbusinstallation - Installationsprofile fuer die Kommunikationsprofilfamilie 21 (IEC 61784-5-21:2018); Deutsche Fassung EN IEC 61784-5-21:2018
VDE 0302-21-2010 Elektrische Isoliersysteme - Verfahren zur thermischen Bewertung - Teil 21: Spezielle Bedingungen fuer Mehrzweckmodelle - Anwendungen bei Drahtwicklungen (IEC 61857-21:2009); Deutsche Fassung EN 61857-21:2009
VDE 0711-2-21 BERICHTIGUNG 1-2017 Leuchten - Teil 2-21: Besondere Anforderungen - Lichtschlaeuche (IEC 60598-2-21:2014); Deutsche Fassung EN 60598-2-21:2015@ Berichtigung zu DIN EN 60598-2-21 (VDE 0711-2-21):2015-10@ (IEC 60598-2-21:2014/COR1:2016); Deutsche Fassung EN 60598-2-21:2015/AC:
VDE 0888-100-21-2016 Lichtwellenleiter - Teil 1-21: Fachgrundspezifikation - Grundlegende Pruefverfahren fuer Lichtwellenleiterkabel - Mechanische Pruefverfahren (IEC 60794-1-21:2015); Deutsche Fassung EN 60794-1-21:2015
VDE 0750-2-21-2010 Medizinische elektrische Geraete - Teil 2-21: Besondere Festlegungen fuer die Sicherheit einschliesslich der wesentlichen Leistungsmerkmale von Saeuglingswaermestrahlern (IEC 60601-2-21:2009); Deutsche Fassung EN 60601-2-21:2009
VDE 0641-21-2018 Electrical accessories - Circuit-breakers for overcurrent protection for household and similar installations - Part 21: Selective main circuit-breakers
VDE 0800-500-21-2016 Industrielle Kommunikationsnetze - Profile - Teil 5-21: Feldbusinstallation - Installationsprofile fuer die Kommunikationsprofilfamilie 21 (IEC 65C/837/CD:2015)
VDE 0641-21-2011 Electrical accessories - Circuit-breakers for overcurrent protection for household and similar installations - Part 21: Selective main circuit-breakers
VDE 0740-2-21-2011 Handgefuehrte motorbetriebene Elektrowerkzeuge - Sicherheit - Teil 2-21: Besondere Anforderungen fuer Rohrreinigungsgeraete (IEC 60745-2-21:2002@ modifiziert + A1:2008); Deutsche Fassung EN 60745-2-21:2009 + A1:2010
VDE 0750-2-21-2017 Medizinische elektrische Geraete - Teil 2-21: Besondere Festlegungen fuer die Sicherheit einschliesslich der wesentlichen Leistungsmerkmale von Saeuglingswaermestrahlern (IEC 60601-2-21:2009 + Cor.:2013 + A1:2016); Deutsche Fassung EN 60601-2-21:2009 + A1
VDE 0605-21-2011 Conduit systems for cable management - Part 21: Particular requirements - Rigid conduit systems (IEC 61386-21:2002); German version EN 61386-21:2004 + A11:2010
VDE 0847-4-21-2011 Electromagnetic compatibility (EMC) - Part 4-21: Testing and measurement techniques - Reverberation chamber test methods (IEC 61000-4-21:2011); German version EN 61000-4-21:2011
VDE 0390-21-2016 Superconductivity - Part 21: Superconducting wires - Test methods for practical superconducting wires - General characteristics and guidance (IEC 61788-21:2015); German version EN 61788-21:2015
VDE 0127-21-2009 Wind turbines - Part 21: Measurement and assessment of power quality characteristics of grid connected wind turbines (IEC 61400-21:2008); German version EN 61400-21:2008

DIN

DIN EN 61643-21:2002 Low voltage surge protective devices - Part 21: Surge protective devices connected to telecommunications and signalling networks; Performance requirements and testing methods (IEC 61643-21:2000 + Corrigendum:2001); German version EN 61643-21:2001
DIN EN 60749-21:2005 Semiconductor devices - Mechanical and climatic test methods - Part 21: Solderability (IEC 60749-21:2004); German version EN 60749-21:2005
DIN EN 61386-21:2004 Conduit systems for cable management - Part 21: Particular requirements - Rigid conduit systems (IEC 61386-21:2002); German version EN 61386-21:2004

AENOR

UNE-EN 54-21:2007 Fire detection and fire alarm systems - Part 21: Alarm transmission and fault warning routing equipment
UNE-EN 61643-21:2002 Low voltage surge protective devices -- Part 21: Surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods.

SCC

DANSK DS/EN 54-21:2006 Fire detection and fire alarm systems - Part 21: Alarm transmission and fault warning routing equipment
NS-EN 54-21:2006 Fire detection and fire alarm systems — Part 21: Alarm transmission and fault warning routing equipment
AENOR UNE-EN 54-21:2007 Fire detection and fire alarm systems - Part 21: Alarm transmission and fault warning routing equipment
DANSK DS/EN 54-21/ZA:2006 Fire detection and fire alarm systems - Part 21: Alarm transmission and fault warning routing equipment
VDI 3805 BLATT 21-2019 Product data exchange in technical building equipment — sanitary installation elements
CEI EN 61643-21:2003 Low voltage surge protective devices - Part 21: Surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods
DIN EN IEC 60268-21:2019 Sound system equipment - Part 21: Acoustical (output-based) measurements (IEC 60268-21:2018); German version EN IEC 60268-21:2018
MIL MIL-C-85049/21A-1983 CONNECTOR ACCESSORIES, ELECTRICAL, BACKSHELL, NONENVIRONMENTAL, STRAIGHT, CATEGORY 3B (FOR MIL-C-38999 SERIES III AND IV CONNECTORS) (SUPERSEDING MIL-C-85049/21) (S/S BY SAE-AS85049/21)
MIL MIL-STD-21A-1968 WELDED-JOINT DESIGNS, ARMORED-TANK TYPE (S/S BY MIL-HDBK-21) (SUPERSEDING MIL-STD-21)
DANSK DS/EN 61643-21:2001 Low voltage surge protective devices - Part 21: Surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods
AENOR UNE-EN 61643-21:2002 Low voltage surge protective devices — Part 21: Surge protective devices connected to telecommunications and signaling networks - Performance requirements and testing methods.
DIN ISO 14617-21 E:1999 Draft Document - Graphical symbols for diagrams - Part 21: Basic mechanical components (ISO/DIS 14617-21(2))
DIN EN IEC 61784-5-21:2019 Industrial communication networks - Profiles - Part 5-21: Installation of fieldbuses - Installation profiles for CPF 21 (IEC 61784-5-21:2018); German version EN IEC 61784-5-21:2018
CSA C22.2 No.61643-21-2022 Low voltage surge protective devices - Part 21: Surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods
DIN 14530-21:2019 Fire-fighting vehicles - Part 21: Pump water tanker TLF 4000
DIN VDE 0641-21 E:2009 Draft Document - Electrical accessories - Circuit-breakers for overcurrent protection for household and similar installations - Part 21: Selective main circuit-breakers
DIN ISO 16000-21 E:2012 Draft Document - Indoor air - Part 21: Detection and enumeration of moulds - Sampling from materials (ISO/DIS 16000-21:2012)

British Standards Institution (BSI)

21/30423422 DC BS ISO 21940-21. Mechanical vibration. Rotor balancing. Part 21. Description and evaluation of balancing machines
21/30402422 DC BS ISO 15500-21. Road vehicles. Compressed natural gas (CNG) fuel system components. Part 21. Discharge line closures
21/30423820 DC BS EN 13763-21. Explosives for civil uses. Detonators and detonating cord relays - Part 21. Determination of flash-over voltage of electric detonators
BS 4317-21:1999(2011)
21/30404426 DC BS ISO 20766-21. Road vehicles. Liquefied petroleum gas (LPG) fuel system components. Part 21. Pressure and/or temperature sensors
BS 5502-21:1990(2009)
21/30434436 DC BS EN IEC 61025. Fault tree analysis (FTA)
21/30433061 DC BS EN 60601-2-21 AMD1. Medical electrical equipment. Part 2-21. Particular requirements for the basic safety and essential performance of infant radiant warmers
BS ISO 10303-21:1994(1995)
PD IEC/TR 62059-21:2002
21/30438027 DC BS EN IEC 61300-2-21. Fibre optic interconnecting devices and passive components. Basic test and measurement procedures. Part 2-21. Tests. Composite temperature/humidity cyclic test
21/30438898 DC BS EN 60670-21 AMD AA. Boxes and enclosures for electrical accessories for household and similar fixed electrical installations. Part 21. Particular requirements for boxes and enclosures with provision for suspension means
21/30441338 DC BS EN 62606 AMD AB. General requirements for arc fault detection devices
21/30402997 DC BS ISO 23979. Ergonomics. Accessible design. Ease of operation
21/30425590 DC BS ISO/IEC 21000-22. Information technology. Multimedia framework (MPEG-21). Part 22. User Description

National Sanitation Foundation (NSF)

NSF/ANSI 21-2015

European Committee for Electrotechnical Standardization（CENELEC）

EN 60255-21-3:1995 Electrical Relays Part 21: Vibration, Shock, Bump and Seismic Tests on Measuring Relays and Protection Equipment Section 3: Seismic Tests
EN 60255-21-1:1995 Electrical Relays Part 21: Vibration, Shock, Bump and Seismic Tests on Measuring Relays and Protection Equipment Section 1: Vibration Tests (Sinusoidal)
EN 60255-21-2:1995 Electrical Relays Part 21: Vibration, Shock, Bump and Seismic Tests on Measuring Relays and Protection Equipment Section 2: Shock and Bump Tests
EN 61643-21:2001 Low voltage surge protective devices Part 21: Surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods (Incorporates Amendment A2: 2013)
EN 60601-2-21:2009 Medical electrical equipment - Part 2-21: Particular requirements for the basic safety and essential performance of infant radiant warmers (Incorporates Amendment A11: 2011)
EN 61754-21:2005 Fibre optic connector interfaces - Part 21: Type SMI connector family for plastic optical fibre
EN 60896-21:2004 Stationary lead-acid batteries Part 21: Valve regulated types - Methods of test
EN 60793-1-21:2002 Optical Fibres - Part 1-21: Measurement Methods and Test Procedures - Coating Geometry
EN 60574-21:1993 Audiovisual, Video and Television Equipment and Systems Part 21: Video Tape Leader and Trailer for Education and Training Applications
EN 60950-21:2003 Information technology equipment Safety Part 21: Remote power feeding (Incorporating Corrigendum August 2003)
EN 61000-4-21:2003 Electromagnetic compatibility (EMC) Part 4-21: Testing and measurement techniques Reverberation chamber test methods (Remains Current)

ZA-SANS

SANS 61643-21:2000 Low voltage surge protective devices Part 21: Surge protective devices connected to telecommunications and signalling networks — Performance requirements and testing methods
SANS 61643-21:2009 Low voltage surge protective devices Part 21: Surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods
SANS 60601-2-21:2009 Medical electrical equipment Part 2-21: Particular requirements for the basic safety and essential performance of infant radiant warmers

International Electrotechnical Commission (IEC)

IEC 61643-21:2012 Low voltage surge protective devices - Part 21: Surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods
IEC 61643-21:2000 Low voltage surge protective devices - Part 21: Surge protective devices connected to telecommunications and signalling networks; Performance requirements and testing methods
IEC 60601-2-21:1994 Medical electrical equipment; part 2: particular requirements for the safety of infant radiant warmers
IEC 61643-21:2009 Low voltage surge protective devices - Part 21: Surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods
IEC 60601-2-21:2009 Medical electrical equipment - Part 2-21: Particular requirements for the basic safety and essential performance of infant radiant warmers
IEC 61158-6-21:2010 Industrial communication networks - Fieldbus specifications - Part 6-21: Application layer protocol specification - Type 21 elements
IEC 61158-6-21:2019 Industrial communication networks - Fieldbus specifications - Part 6-21: Application layer protocol specification – Type 21 elements
IEC 61158-4-21:2023 Industrial communication networks - Fieldbus specifications - Part 4-21: Data-link layer protocol specification - Type 21 elements
IEC 61158-3-21:2010 Industrial communication networks - Fieldbus specifications - Part 3-21: Data link layer service definition - Type 21 elements
IEC 61643-21:2000/COR1:2001 Low voltage surge protective devices - Part 21: Surge protective devices connected to telecommunications and signalling networks; Performance requirements and testing methods
IEC 61158-4-21:2010 Industrial communication networks - Fieldbus specifications - Part 4-21: Data-link layer protocol specification - Type 21 elements
IEC 61158-5-21:2010 Industrial communication networks - Fieldbus specifications - Part 5-21: Application layer service definition - Type 21 elements

RU-GOST R

GOST IEC 61643-21-2014 Low voltage surge protective devices. Part 21. Surge protective devices connected to telecommunications and signalling networks. Performance requirements and testing methods
GOST R IEC 60601-2-21-2013 Medical electrical equipment. Part 2-21. Particular safety requirements considering essential performance for infant radiant warmers

Danish Standards Foundation

DS/EN 61643-21:2002 Low voltage surge protective devices - Part 21: Surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods
DS/EN 61643-21/A2:2013 Low voltage surge protective devices - Part 21: Surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods
DS/EN 61643-21/A1:2009 Low voltage surge protective devices - Part 21: Surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods
DS/ISO/TR 22053:2021 Safety of machinery – Safeguarding supportive system

HU-MSZT

MSZ 19351/21.lap-1962 Filter No. 21

Association Francaise de Normalisation

NF S61-021*NF EN 54-21:2006 Fire detection and fire alarm systems - Part 21 : alarm transmission and fault warning routing equipment
NF C61-744-21*NF EN 61643-21:2001 Low voltage surge protective devices - part 21 : surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods
NF C61-744-21/A2*NF EN 61643-21/A2:2013 Low voltage surge protective devices - Part 21: surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods
NF C61-744-21/A1*NF EN 61643-21/A1:2009 Low voltage surge protective devices - Part 21 : surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods
NF C46-604-4-21*NF EN 61158-4-21:2013 Industrial communication networks - Fieldbus specifications - Part 4-21 : data-link layer protocol specification - Type 21 elements
NF C46-604-5-21*NF EN 61158-5-21:2013 Industrial communication networks - Fieldbus specifications - Part 5-21 : application layer service definition - Type 21 elements

Korean Agency for Technology and Standards (KATS)

KS C IEC 61643-21-2020 Low voltage surge protective devices — Part 21: Surge protective devices connected to telecommunications and signalling networks — Performance requirements and testing methods
KS C IEC 61643-21:2015 Low voltage surge protective devices — Part 21: Surge protective devices connected to telecommunications and signalling networks — Performance requirements and testing methods
KS C IEC 61643-21:2007 Low voltage surge protective devices-Part 21:Surge protective devices connected to telecommunications and signalling networks-Performance requirements and testing methods
KS C IEC 61643-21-2015(2020) Low voltage surge protective devices — Part 21: Surge protective devices connected to telecommunications and signalling networks — Performance requirements and testing methods

GSO

OS GSO IEC 61643-21:2014 Low voltage surge protective devices - Part 21: Surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods

Japanese Industrial Standards Committee (JISC)

JIS C 5381-21:2014 Low voltage surge protective devices -- Part 21: Surge protective devices connected to telecommunications and signalling networks -- Performance requirements and testing methods

IN-BIS

IS 1448 Pt.21-1970 Flash point of PENSKY-MARTENS device (off) [P: 21]
IS 5000 OD.21-1979 Semiconductor device size device outline OD 21
IS 10810 Pt.21-1984 Cable test methods Part 21 Cold shock test

US-HHS

HHS 21 CFR PART 21 CFR PART 21-2011 PROTECTION OF PRIVACY

US-FCR

FCR 21 CFR PART 21-2015 PROTECTION OF PRIVACY
FCR 21 CFR PART 21-2014 PROTECTION OF PRIVACY
FCR 21 CFR PART 21-2013 PROTECTION OF PRIVACY

Institute of Electrical and Electronics Engineers (IEEE)

RP 21:2015 RP 21:2015 - SMPTE Standard - Dimensions of 35-mm and 70-mm Motion-Picture Rewind Spindles

TIA - Telecommunications Industry Association

EIA-455-21A-1988 FOTP-21 Mating Durability of Fiber Optic Interconnecting Devices

American Society for Testing and Materials (ASTM)

ASTM F3502-21 Standard Specification for Barrier Face Coverings

Underwriters Laboratories (UL)

UL 60950-21 (ND)-2003 National Differences For UL 60950-21 Information Technology Equipment - Safety - Part 21: Remote Power Feeding (First Edition)

(U.S.) Telecommunications Industries Association

TIA-455-21-A-1988 FOTP-21 Mating Durability of Fiber Optic Interconnecting Devices

KR-KS

KS X ISO/IEC 21000-21-2018 Information technology — Multimedia framework(MPEG-21) — Part 21: Media Contract Ontology