EN 60027-1:2006/A2:2007
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LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY - PART 1: GENERAL
Published date
18-04-2007
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FOREWORD
SECTION 0: GENERAL
Scope
SECTION 1: RECOMMENDATIONS FOR PRINTING SYMBOLS AND NUMBERS
1.1 Symbols for quantities
1.1.1 Symbols
1.1.2 Rules for printing of subscripts and use of subscripts
in electrical technology
1.1.3 Rules
1.1.4 Combination of symbols for quantities; elementary
operations with quantities
1.1.5 Substitution of letters
1.2 Names and symbols for units
1.2.1 International symbols for units
1.2.2 Combination of symbols for units
1.2.3 Printing of symbols for units
1.2.4 Printing and use of prefixes
1.2.5 Spelling of names of units in the English language
1.3 Numbers
1.3.1 Printing of numbers
1.3.2 Decimal sign
1.3.3 Multiplication of numbers
1.4 Mathematical signs and symbols
1.5 Expressions for quantities
1.6 Complex representation of quantities
SECTION 2: GENERAL RECOMMENDATIONS FOR TIME-DEPENDENT QUANTITIES
2.1 Quantities that vary with time periodically
2.2 Quantities that vary with time non-periodically
SECTION 3: SYMBOLS FOR QUANTITIES AND THEIR UNITS, SELECTED
CONSTANTS AND SIGNS
3.1 Introduction to tables for quantities and their units
3.2 Introduction to the tables for subscripts
3.3 Introduction to the table for mathematical signs and symbols
3.4 Introduction to the tables for time-dependent quantities
Annexes
A - Greek alphabet
B - Glossary of terms concerning letter symbols
B.1 Terms concerning the structure of letter symbols
B.2 Styles of letters
B.2.1 Names of various marks added to a kernel (X)
B.2.2 Illustrative examples
C - Examples of time-dependent quantities
C.1 Examples of periodic quantities
C.2 Examples of transient quantities
C.3 Example of a random quantity
D - Examples of use of source voltage and source current in
equivalent circuits
E - Special note concerning the rules for the names of
quantities and units
F - Systems of units and quantities
G - Bibliography
Presents information about general quantities, units and their letter symbols and mathematical symbols that are to be used in electrical technology.
| Committee |
SR 25
|
| DevelopmentNote |
Supersedes HD 60027-1. (11/2006)
|
| DocumentType |
Standard
|
| PublisherName |
European Committee for Standards - Electrical
|
| Status |
Current
|
| Supersedes |
| Standards | Relationship |
| UNE-EN 60027-1:2009 | Identical |
| CEI EN 60027-1 : 2008 | Identical |
| IEC 60027-1:1992 | Identical |
| BS EN 60027-1 : 2006 | Identical |
| NEN EN IEC 60027-1 : 2006 AMD 2 2007 | Identical |
| I.S. EN 60027-1:2006 | Identical |
| PN EN 60027-1 : 2006 AMD 2 2007 | Identical |
| NBN EN 60027-1 : 2007 AMD 1 2007 | Identical |
| DIN EN 60027-1:2007-09 | Identical |
| UNE-EN 60027-1:2009/A2:2009 | Identical |
| NF EN 60027-1 : 2007 AMD 2 2007 | Identical |
| BS EN 60027-1:2006+A2:2007 | Identical |
| CEI EN 60027-7 : 2011 | LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY - PART 7: POWER GENERATION, TRANSMISSION AND DISTRIBUTION |
| CEI EN 60027-6 : 2008 | LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY - PART 6: CONTROL TECHNOLOGY |
| BS EN 62341-1-1:2009 | Organic light emitting diode (OLED) displays Generic specifications |
| CEI EN 61310-2 : 2008 | SAFETY OF MACHINERY - INDICATION, MARKING AND ACTUATION - PART 2: REQUIREMENTS FOR MARKING |
| BS EN 61310-2:2008 | Safety of machinery. Indication, marking and actuation Requirements for marking |
| CEI UNI EN 80000-6 : 2009 | QUANTITIES AND UNITS - PART 6: ELECTROMAGNETISM |
| BS EN 60539-1:2016 | Directly heated negative temperature coefficient thermistors Generic specification |
| BS EN 140101:2008 | Blank Detail Specification. Fixed low power film resistors |
| BS EN 60034-1:2010 | Rotating electrical machines Rating and performance |
| I.S. EN 60034-1:2010 | ROTATING ELECTRICAL MACHINES - PART 1: RATING AND PERFORMANCE |
| I.S. EN 140402-801:2015 | DETAIL SPECIFICATION: FIXED LOW POWER WIREWOUND SURFACE MOUNT (SMD) RESISTORS - RECTANGULAR - STABILITY CLASSES 0,5; 1; 2 |
| BS EN 60086-4:2015 | Primary batteries Safety of lithium batteries |
| EN 140402-801:2015 | Detail specification: Fixed low power wirewound surface mount (SMD) resistors - Rectangular - Stability classes 0,5; 1; 2 |
| EN 60034-2-1:2014 | Rotating electrical machines - Part 2-1: Standard methods for determining losses and efficiency from tests (excluding machines for traction vehicles) |
| EN 140101:2008 | Blank Detail Specification: Fixed low power film resistors |
| EN 60115-2:2015 | Fixed resistors for use in electronic equipment - Part 2: Sectional specification: Leaded fixed low power film resistors |
| EN 60027-2:2007 | Letter symbols to be used in electrical technology - Part 2: Telecommunications and electronics |
| EN 140401:2009 | Blank Detail Specification: Fixed low power film surface mount (SMD) resistors |
| EN 80000-6:2008 | Quantities and units - Part 6: Electromagnetism |
| EN 140402:2015/A1:2016 | BLANK DETAIL SPECIFICATION: FIXED LOW POWER WIREWOUND SURFACE MOUNT (SMD) RESISTORS |
| OVE/ONORM EN 60027-2 : 2007 | LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY - PART 2: TELECOMMUNICATIONS AND ELECTRONICS |
| BS EN 60115-8:2012 | Fixed resistors for use in electronic equipment Sectional specification. Fixed surface mount resistors |
| BS EN 60027-2:2007 | Letter symbols to be used in electrical technology Telecommunications and electronics |
| CEI EN 60034-1 : 2015 | ROTATING ELECTRICAL MACHINES - PART 1: RATING AND PERFORMANCE |
| CEI EN 60393-1 : 2010 | POTENTIOMETERS FOR USE IN ELECTRONIC EQUIPMENT - PART 1: GENERIC SPECIFICATION |
| BS EN 62368-1 : 2014 | AUDIO/VIDEO, INFORMATION AND COMMUNICATION TECHNOLOGY EQUIPMENT - PART 1: SAFETY REQUIREMENTS |
| I.S. EN 140402:2015 | BLANK DETAIL SPECIFICATION: FIXED LOW POWER WIREWOUND SURFACE MOUNT (SMD) RESISTORS |
| BS EN 60115-1 : 2011 | FIXED RESISTORS FOR USE IN ELECTRONIC EQUIPMENT - PART 1: GENERIC SPECIFICATION |
| I.S. EN 60115-8:2012 | FIXED RESISTORS FOR USE IN ELECTRONIC EQUIPMENT - PART 8: SECTIONAL SPECIFICATION - FIXED SURFACE MOUNT RESISTORS (IEC 60115-8:2009 (MOD)) |
| I.S. EN 60027-2:2007 | LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY - PART 2: TELECOMMUNICATIONS AND ELECTRONICS |
| I.S. EN 140401:2009 | BLANK DETAIL SPECIFICATION: FIXED LOW POWER FILM SURFACE MOUNT (SMD) RESISTORS |
| I.S. EN 60393-1:2009 | POTENTIOMETERS FOR USE IN ELECTRONIC EQUIPMENT - PART 1: GENERIC SPECIFICATION |
| I.S. EN 140100:2008 | SECTIONAL SPECIFICATION: FIXED LOW POWER FILM RESISTORS |
| I.S. EN 60034-2-1:2014 | ROTATING ELECTRICAL MACHINES - PART 2-1: STANDARD METHODS FOR DETERMINING LOSSES AND EFFICIENCY FROM TESTS (EXCLUDING MACHINES FOR TRACTION VEHICLES) |
| BS EN 60115-2:2015 | Fixed resistors for use in electronic equipment Sectional specification: Leaded fixed low power film resistors |
| BS EN 60034-2-1:2014 | Rotating electrical machines Standard methods for determining losses and efficiency from tests (excluding machines for traction vehicles) |
| CEI EN 60115-8-1 : 2016 | FIXED RESISTORS FOR USE IN ELECTRONIC EQUIPMENT - PART 8-1: BLANK DETAIL SPECIFICATION: FIXED SURFACE MOUNT (SMD) LOW POWER FILM RESISTORS FOR GENERAL ELECTRONIC EQUIPMENT, CLASSIFICATION LEVEL G |
| BS EN 60393-1:2009 | Potentiometers for use in electronic equipment Generic specification |
| BS EN 140401-801 : 2007 | DETAIL SPECIFICATION: FIXED LOW POWER FILM SMD RESISTORS - RECTANGULAR - STABILITY CLASSES 0,1; 0,25; 0,5; 1 |
| BS EN 140401-803 : 2007 | DETAIL SPECIFICATION: FIXED LOW POWER FILM SMD RESISTORS - CYLINDRICAL - STABILITY CLASSES 0,05; 0,1; 0,25; 0,5; 1; 2 |
| I.S. EN 60115-2:2015 | FIXED RESISTORS FOR USE IN ELECTRONIC EQUIPMENT - PART 2: SECTIONAL SPECIFICATION: LEADED FIXED LOW POWER FILM RESISTORS |
| 14/30317306 DC : 0 | BS EN 60115-8-1:2014+A1 - FIXED RESISTORS FOR USE IN ELECTRONIC EQUIPMENT - PART 8-1: BLANK DETAIL SPECIFICATION: FIXED SURFACE MOUNT (SMD) LOW POWER FILM RESISTORS FOR GENERAL ELECTRONIC EQUIPMENT, CLASSIFICATION LEVEL G |
| I.S. EN 140401-804:2011 | DETAIL SPECIFICATION: FIXED LOW POWER FILM HIGH STABILITY SMD RESISTORS - RECTANGULAR - STABILITY CLASSES 0,1; 0,25 |
| BS EN 140402 : 2015 | BLANK DETAIL SPECIFICATION: FIXED LOW POWER WIREWOUND SURFACE MOUNT (SMD) RESISTORS |
| I.S. EN 60027-6:2007 | LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY - PART 6: CONTROL TECHNOLOGY |
| I.S. EN 140101-806:2009 | DETAIL SPECIFICATION: FIXED LOW POWER FILM RESISTORS - METAL FILM RESISTORS ON HIGH GRADE CERAMIC, CONFORMAL COATED OR MOLDED, AXIAL OR PREFORMED LEADS |
| I.S. EN 60115-8-1:2015 | FIXED RESISTORS FOR USE IN ELECTRONIC EQUIPMENT - PART 8-1: BLANK DETAIL SPECIFICATION: FIXED SURFACE MOUNT (SMD) LOW POWER FILM RESISTORS FOR GENERAL ELECTRONIC EQUIPMENT, CLASSIFICATION LEVEL G |
| BS EN 140401-804 : 2011 | DETAIL SPECIFICATION: FIXED LOW POWER FILM HIGH STABILITY SMD RESISTORS - RECTANGULAR - STABILITY CLASSES 0,1; 0,25 |
| BS EN 140401:2009 | Blank Detail Specification. Fixed low power film surface mount (SMD) resistors |
| I.S. EN 61310-2:2008 | SAFETY OF MACHINERY - INDICATION, MARKING AND ACTUATION - PART 2: REQUIREMENTS FOR MARKING |
| I.S. EN 60115-1:2011 | FIXED RESISTORS FOR USE IN ELECTRONIC EQUIPMENT - PART 1: GENERIC SPECIFICATION (IEC 60115-1:2008, MODIFIED) |
| EN 140401-804:2011/A1:2013 | DETAIL SPECIFICATION: FIXED LOW POWER FILM HIGH STABILITY SMD RESISTORS - RECTANGULAR - STABILITY CLASSES 0,1; 0,25 |
| EN 60086-4:2015 | Primary batteries - Part 4: Safety of lithium batteries |
| BS EN 80000-6:2008 | Quantities and units Electromagnetism |
| BS EN 140100:2008 | Sectional specification. Fixed low power film resistors |
| CEI EN 60027-4 : 2008 | LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY - PART 4: ROTATING ELECTRICAL MACHINES |
| 10/30237986 DC : 0 | BS EN 140401-804 - DETAIL SPECIFICATION: FIXED LOW POWER FILM HIGH STABILITY SMD RESISTORS - RECTANGULAR - STABILITY CLASSES 0,1; 0,25 |
| 08/30186808 DC : DRAFT JULY 2008 | BS EN 140401 - BLANK DETAIL SPECIFICATION - FIXED LOW POWER NON-WIRE-WOUND SURFACE MOUNT (SMD) RESISTORS |
| BS EN 140401-802 : 2007 | DETAIL SPECIFICATION: FIXED LOW POWER FILM SMD RESISTORS - RECTANGULAR - STABILITY CLASSES 1; 2 |
| 14/30311384 DC : 0 | BS EN 60115-2:2014+A1 - FIXED RESISTORS FOR USE IN ELECTRONIC EQUIPMENT - PART 2: SECTIONAL SPECIFICATION: LEADED FIXED LOW POWER FILM RESISTORS |
| BS EN 60115-8-1:2015 | Fixed resistors for use in electronic equipment Blank detail specification: Fixed surface mount (SMD) low power film resistors for general electronic equipment, classification level G |
| BS EN 60027-6:2007 | Letter symbols to be used in electrical technology Control technology |
| 12/30258453 DC : 0 | BS EN 62368-1 AMD - AUDIO/VIDEO, INFORMATION AND COMMUNICATION TECHNOLOGY EQUIPMENT - PART 1: SAFETY REQUIREMENTS |
| I.S. EN 60027-7:2010 | LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY - PART 7: POWER GENERATION, TRANSMISSION AND DISTRIBUTION |
| CEI EN 62368-1 : 2016 | AUDIO/VIDEO, INFORMATION AND COMMUNICATION TECHNOLOGY EQUIPMENT - PART 1: SAFETY REQUIREMENTS |
| I.S. EN 140101:2008 | BLANK DETAIL SPECIFICATION: FIXED LOW POWER FILM RESISTORS |
| I.S. EN 62368-1:2014 | AUDIO/VIDEO, INFORMATION AND COMMUNICATION TECHNOLOGY EQUIPMENT - PART 1: SAFETY REQUIREMENTS (IEC 62368-1:2014, MODIFIED) |
| EN 62368-1:2014/AC:2017-03 | AUDIO/VIDEO, INFORMATION AND COMMUNICATION TECHNOLOGY EQUIPMENT - PART 1: SAFETY REQUIREMENTS (IEC 62368-1:2014, MODIFIED) |
| EN 140401-802:2007/A3:2017 | DETAIL SPECIFICATION: FIXED LOW POWER FILM SMD RESISTORS - RECTANGULAR - STABILITY CLASSES 1; 2 |
| I.S. EN 60027-4:2007 | LETTER SYMBOLS TO BE USED IN ELECTRIC TECHNOLOGY - PART 4: ROTATING ELECTRIC MACHINES |
| I.S. EN 140401-802:2007 | DETAIL SPECIFICATION: FIXED LOW POWER FILM SMD RESISTORS - RECTANGULAR - STABILITY CLASSES 1; 2 |
| I.S. EN 140401-803:2007 | DETAIL SPECIFICATION: FIXED LOW POWER FILM SMD RESISTORS - CYLINDRICAL - STABILITY CLASSES 0,05; 0,1; 0,25; 0,5; 1; 2 |
| EN 60539-1:2016/AC:2017-09 | DIRECTLY HEATED NEGATIVE TEMPERATURE COEFFICIENT THERMISTORS - PART 1: GENERIC SPECIFICATION (IEC 60539-1:2016/COR1:2017) |
| EN 60115-1:2011/A11:2015 | FIXED RESISTORS FOR USE IN ELECTRONIC EQUIPMENT - PART 1: GENERIC SPECIFICATION |
| BS EN 140402-801:2015 | Detail specification: Fixed low power wirewound surface mount (SMD) resistors. Rectangular. Stability classes 0,5; 1; 2 |
| EN 60027-4:2007 | Letter symbols to be used in electrical technology - Part 4: Rotating electrical machines |
| EN 60027-6:2007 | Letter symbols to be used in elecrical technology - Part 6: Control technology |
| I.S. EN 80000-6:2008 | QUANTITIES AND UNITS - PART 6: ELECTROMAGNETISM |
| CEI EN 60115-2 : 2016 | FIXED RESISTORS FOR USE IN ELECTRONIC EQUIPMENT - PART 2: SECTIONAL SPECIFICATION: LEADED FIXED LOW POWER FILM RESISTORS |
| CEI EN 140401 : 2009 | BLANK DETAIL SPECIFICATION: FIXED LOW POWER FILM SURFACE MOUNT (SMD) RESISTORS |
| CEI EN 60115-8 : 2013 | FIXED RESISTORS FOR USE IN ELECTRONIC EQUIPMENT - PART 8: SECTIONAL SPECIFICATION - FIXED SURFACE MOUNT RESISTORS |
| BS EN 60027-7:2010 | Letter symbols to be used in electrical technology Power generation, transmission and distribution |
| BS EN 60027-4:2007 | Letter symbols to be used in electric technology Rotating electric machines |
| UNE-EN 60027-4:2011 | Letter symbols to be used in electrical technology -- Part 4: Rotating electric machines |
| BS EN 140101-806 : 2008 | DETAIL SPECIFICATION: FIXED LOW POWER FILM RESISTORS - METAL FILM RESISTORS ON HIGH GRADE CERAMIC, CONFORMAL COATED OR MOLDED, AXIAL OR PREFORMED LEADS |
| UNI CEI EN 80000-6 : 2009 | QUANTITIES AND UNITS - PART 6: ELECTROMAGNETISM |
| UNE-EN 60034-22:2010 | Rotating electrical machines -- Part 22: AC generators for reciprocating internal combustion (RIC) engine driven generating sets |
| I.S. EN 140401-801:2007 | DETAIL SPECIFICATION: FIXED LOW POWER FILM SMD RESISTORS - RECTANGULAR - STABILITY CLASSES 0,1; 0,25; 0,5; 1 |
| I.S. EN 60539-1:2016 | DIRECTLY HEATED NEGATIVE TEMPERATURE COEFFICIENT THERMISTORS - PART 1: GENERIC SPECIFICATION |
| EN 140401-803 : 2007 AMD 3 2017 | DETAIL SPECIFICATION: FIXED LOW POWER FILM SMD RESISTORS - CYLINDRICAL - STABILITY CLASSES 0,05; 0,1; 0,25; 0,5; 1; 2 |
| EN 140101-806 : 2008 COR 2014 | DETAIL SPECIFICATION: FIXED LOW POWER FILM RESISTORS - METAL FILM RESISTORS ON HIGH GRADE CERAMIC, CONFORMAL COATED OR MOLDED, AXIAL OR PREFORMED LEADS |
| EN 140401-801:2007/A1:2013 | DETAIL SPECIFICATION: FIXED LOW POWER FILM SMD RESISTORS - RECTANGULAR - STABILITY CLASSES 0,1; 0,25; 0,5; 1 |
| EN 62341-1-1:2009 | Organic light emitting diode (OLED) displays - Part 1-1: Generic specifications |
| EN 60027-7:2010 | Letter symbols to be used in electrical technology - Part 7: Power generation, transmission and distribution |
| EN 60115-8:2012 | Fixed resistors for use in electronic equipment - Part 8: Sectional specification - Fixed surface mount resistors |
| EN 60034-1:2010/corrigendum Oct. 2010 | ROTATING ELECTRICAL MACHINES - PART 1: RATING AND PERFORMANCE |
| EN 60115-8-1:2015 | Fixed resistors for use in electronic equipment - Part 8-1: Blank detail specification: Fixed surface mount (SMD) low power film resistors for general electronic equipment, classification level G |
| EN 140100:2008 | Sectional Specification: Fixed low power film resistors |
| EN 60393-1:2009 | Potentiometers for use in electronic equipment - Part 1: Generic specification |
| EN 61310-2:2008 | Safety of machinery - Indication, marking and actuation - Part 2: Requirements for marking |
| ISO 31-11:1992 | Quantities and units Part 11: Mathematical signs and symbols for use in the physical sciences and technology |
| ISO 31-0:1992 | Quantities and units Part 0: General principles |
| IEC 60375:2003 | Conventions concerning electric and magnetic circuits |
| ISO 31-2:1992 | Quantities and units Part 2: Periodic and related phenomena |
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