电气安全名词术语GB4776-84.pdf

GB 4776-84 GB 4776-84 1984-11-301988-07-01 1 1.1 fail-safe 1.2 nromal condition 1.3 electric accident 1.4 electric shock 1.5 injury due to electromagnetic field 1.6 1/36GB 4776-84 2020/7/16file///C/Users/ThinkPad/AppData/Local/Temp/23.htm disruptive discharge dielectric breakdown 1.7 short circuit 1.8 insulation fault 1.9 earth fault 1.10 overcurrent 1.11 overvoltage 1.12 overload 2/36GB 4776-84 2020/7/16file///C/Users/ThinkPad/AppData/Local/Temp/23.htm 1.13 conductive part 1.14 live part PEN 1.15 exposed conductive part 1.16 extraneous conductive part 1.17 simultaneously accessible parts 3/36GB 4776-84 2020/7/16file///C/Users/ThinkPad/AppData/Local/Temp/23.htm 1.18 direct contact 1.19 indirect contact 1.20 touch voltage 1.21 step voltage 1.22 safety extra-low voltageSELV 50 1.23 4/36GB 4776-84 2020/7/16file///C/Users/ThinkPad/AppData/Local/Temp/23.htm voltage to earth 1.24 overvoltage to earth 1.25 shock current 1.26 threshold of perception current 1.27 threshold of let-go current 1.28 threshold of ventricular fibrillation current 1.29 fault current 1.30 overload current of a circuit 5/36GB 4776-84 2020/7/16file///C/Users/ThinkPad/AppData/Local/Temp/23.htm 1.31 short-circuit current 1.32 residual current 1.33 total impedance of the human body\ 1.34 safety impedance 1.35 fault withstandability 1.36 unsafe temperature 2 2.1 2.1.1 insulation property 6/36GB 4776-84 2020/7/16file///C/Users/ThinkPad/AppData/Local/Temp/23.htm 2.1.2 insulation material 2.1.3 insulation system 2.1.4 basic insulation 2.1.5 supplementary insulation 2.1.6 double insulation 2.1.7 reinforced insulation 2.1.8 insulation resistance 2.1.9 dielectric strenght 2.1.10 dielectric test 7/36GB 4776-84 2020/7/16file///C/Users/ThinkPad/AppData/Local/Temp/23.htm 2.1.11 leakage current 2.1.12 dielectric loss 2.1.13 loss angle under sinusoidal condition 2.1.14 Q quality factor 2.1.15 enclosure 2.1.16 protective cover 2.1.17 8/36GB 4776-84 2020/7/16file///C/Users/ThinkPad/AppData/Local/Temp/23.htm barrier 2.1.18 obstacle 2.2 2.2.1 clearance 2.2.2 protective gap 2.2.3 creepage distance 2.2.4 to isolatea. b. 2.2.5 safe distance 2.2.6 9/36GB 4776-84 2020/7/16file///C/Users/ThinkPad/AppData/Local/Temp/23.htm arms reach 2.3 2.3.1 continuous current-carrying capacity of a conductor 2.4 2.4.1 safety marking 2.4.2 supplementary marking 2.4.3 safety colour 3 3.1 3.1.1TN TN system TN 10/36GB 4776-84 2020/7/16file///C/Users/ThinkPad/AppData/Local/Temp/23.htm a. TN-S b. TN-C-S c. TN-C TN S C 3.1.2TT TT system T T 3.1.3IT IT system I T 3.1.4 system with effectively earthed neutral 11/36GB 4776-84 2020/7/16file///C/Users/ThinkPad/AppData/Local/Temp/23.htm 3X0/X13 1R0/X11 3.1.5 system with non-effectively earthed neutral 3X0/X13 1R0/X11 3.2 3.2.1 inspection earthing 3.2.2 working earthing 3.2.3 protective earthing 3.2.4 iterative earth 12/36GB 4776-84 2020/7/16file///C/Users/ThinkPad/AppData/Local/Temp/23.htm 3.2.5 fault earthing 3.2.6 resistance of an earthed conductorearthing resistance 3.2.7 earth fault current 3.2.8 earth fault current 3.2.9 earth short circuit current 3.2.10 overcurrent protection 3.2.11 overvoltage protection 13/36GB 4776-84 2020/7/16file///C/Users/ThinkPad/AppData/Local/Temp/23.htm 3.2.12 open-phase protection 3.2.13 protection against direct contact; protection against shock in no rmal service, basic protection\ 3.2.14 protection against indirect contact; protection against shock in the case of a fault; supplementary protection 3.2.15 equipotential bonding 3.2.16 dust-protected 3.2.17 protected against splashing 3.2.18 14/36GB 4776-84 2020/7/16file///C/Users/ThinkPad/AppData/Local/Temp/23.htm protected against dropping water 3.2.19 protected against the effects of immersion 3.2.20 protected against submersion 3.3 3.3.1 safety circuit and device 3.3.20 class 0 equipment 3.3.3 class equipment 15/36GB 4776-84 2020/7/16file///C/Users/ThinkPad/AppData/Local/Temp/23.htm 3.3.4 class equipment 3.3.5 class equipment 3.3.6 overcurrent protective device 3.3.7 release of a mechanical switching device 3.3.8 protective relay 3.3.9 16/36GB 4776-84 2020/7/16file///C/Users/ThinkPad/AppData/Local/Temp/23.htm single-phase neutral earthing reactor 3.3.10 earthed circuit 3.3.11 earthing switch 3.3.12 earthing conductor 3.3.13 main earthing terminalmain earthing bar 3.3.14 residual current circuit-breaker 3.3.15 17/36GB 4776-84 2020/7/16file///C/Users/ThinkPad/AppData/Local/Temp/23.htm interlocking device 3.3.16 arc-control device 3.3.17 safety isolating transer 3.3.18 circuit-breaker 3.3.19 fuse 3.3.20 surge arrester lightning arrester 18/36GB 4776-84 2020/7/16file///C/Users/ThinkPad/AppData/Local/Temp/23.htm 3.3.21 capacitor for voltage protection 3.3.22 safety safety switch 3.3.23 protective circuit 3.3.24 limited current circuit 3.3.25 protective current voltagetranser 3.3.26 insulation monitoring and warnign device 3.3.27 protective conductor a. 19/36GB 4776-84 2020/7/16file///C/Users/ThinkPad/AppData/Local/Temp/23.htm b. c. d. e. PE 3.3.28 neutral conductor N 3.3.29 PEN PEN conductor PENPEN 3.3.30 equipotential bonding conductor A A.1 A.2 20/36GB 4776-84 2020/7/16file///C/Users/ThinkPad/AppData/Local/Temp/23.htm A.3 A.4 A.4.1 A.4.2 A.4.3 A.5 A IT............................................3.1.3 ..........................................2.4.1 ....................................... 3.3.1 ........................................ 3.3.17 ........................................ 2.2.5 ....................................... 3.3.22 .............................................. 2.4.3 .......................................... 1.22 ............................................. 1.34 21/36GB 4776-84 2020/7/16file///C/Users/ThinkPad/AppData/Local/Temp/23.htm B .......................................1.27 ...............................................1.1 .............................................3.3.27 ............................................3.3.23 ..........................................3.3.21 ............................................ 3.3.8 ............................................. 2.2.2 ..............................................3.2.3 ..................................... . 3.3.25 ....................................... 3.3.25 ..........................................3.3.29 ................................................. 3.3.20 ............................................... 2.4.2 ............................................. 1.36 B ..................................................1.32 .....................................................1.4 ..................................................1.25 ..................................................3.2.4 22/36GB 4776-84 2020/7/16file///C/Users/ThinkPad/AppData/Local/Temp/23.htm [1]B ..................................................1.14 ...................................3.3.9 ................................................. 1.13 ....................................2.3.1 ................................................3.2.15 .......................................... .3.3.30 .............................................. 1.5 .................................................... 1.4 ........................................ 1.30 .................................................2.2.1 ................................................. 1.3 .....................................................1.7 ................................................. 1.31 ................................................. 3.3.18 ............................................... 3.2.12 ............................................... 1.23 ..........................................1.24 D ............................................3.3.4 F 23/36GB 4776-84 2020/7/16file///C/Users/ThinkPad/AppData/Local/Temp/23.htm ...............................................3.2.16 ...............................................3.2.18 ................................................. 2.1.16 ................................................3.2.17 .................................................3.2.20 ...............................................3.2.19 ..............................................3.2.14 ..............................................2.1.5 G ........................................1.26 ..................................................2.2.4 ...............................................3.2.2 ...............................................1.29 ..................................................3.2.5 .......................................... 3.2.14 .................................................1.10 .................................................. 1.11 .................................................1.12 .......................................... 3.2.10 ...................................... 3.3.6 ...............................................3.2.11 24/36GB 4776-84 2020/7/16file///C/Users/ThinkPad/AppData/Local/Temp/23.htm J ...............................................3.2.13 ................................................ 2.1.4 ................................. 3.3.7 ................................................. 2.1.7 ................................................ 1.19 ............................................ 3.2.14 ..............................................3.2.1 ....................................................1.20 . ................................................. 3.3.12 ...............................................3.3.10 ...............................................3.2.6 ...........................................3.2.9 .............................................1.9 ........................................3.2.8 ........................................... 3.2.7 .........................................3.3.11 .............................................2.1.9 ..............................................2.1.12 .............................................1.6 ...........................................2.1.9 .......................................2.1.10 ...........................................2.1.12 25/36GB 4776-84 2020/7/16file///C/Users/ThinkPad/AppData/Local/Temp/23.htm .........................................2.1.2 ...........................................2.1 ............................................1.8 ...................................3.3.26 ................................................ 2.1.3 ..........................................2.1.1 K ...........................................1.21 K 0................................................ 3.3.2 ................................................. 3.3.15 ..................................................2.2.3 .............................................. 3.3.14 [1]K ............................................... 3.3.16 N .................................................1.35 P 26/36GB 4776-84 2020/7/16file///C/Users/ThinkPad/AppData/Local/Temp/23.htm ............................................... 2.2.3 P E N ............................................. 3.3.29 .............................................. 2.1.14 ............................................ 1.6 Q Q................................................. 2.1.14 [1]P ............................................. 1.33 ................................................... 3.3.19 R ............................................... 3.3.5 .................................................. 2.2.6 .................................................1.29 ........................................... 2.1.6 ................................ 2.1.13 T T N .............................................. 3.1.1 ........................................ 1.17 T T ........................................ 3.1.2 27/36GB 4776-84 2020/7/16file///C/Users/ThinkPad/AppData/Local/Temp/23.htm W ..........................................1.16 .................................................2.1.15 1.15 X .............................................. 3.3.24 ...................................................2.1.11 [1]W . ................................................... 3.3.3 Z .................................................... 2.1.17 ..................................... 3.2.13 ...............................................1.2 ..................................................1.18 ............................................. 3.2.13 ........................................1.28 ................................................. 3.3.28 .................................... 3.1.5 ....................................... 3.1.4 28/36GB 4776-84 2020/7/16file///C/Users/ThinkPad/AppData/Local/Temp/23.htm ............................................... 3.3.13 ................................................. 3.3.13 .............................................2.1.18 A arc-control device ...................................... 3.3.16 arms reach ............................................. 2.2.6 B barrier .............................................2.1.17 basic insulation .......................................2.1.4 basic protection ......................................3.2.13 C capacitor for voltage protection ......................... 3.3.21 circuit-breaker ......................................... 3.3.18 class 0 equipment...................................... 3.3.2 class equipment..................................... 3.3.3 class equipment ...................................... 3.3.4 class equipment .....................................3.3.5 clearance..........................................2.2.1 conductive part ......................................... 1.13 continuous current-carrying capacity of a conductor...... 2.3.1 29/36GB 4776-84 2020/7/16file///C/Users/ThinkPad/AppData/Local/Temp/23.htm creepage distance .......................................... 2.2.3 D dielectric breakdown ....................................... 1.6 dielectric loss .......................................... 2.1.12 dielectric strength ....................................... 2.1.9 dielectric test ........................................... 2.1.10 direct contact ............................................. 1.18 disruptive discharge ....................................... 1.6 double insulation ........................................ 2.1.6 dust-protected .............................................3.2.16 E earth fault ................................................1.9 earth fault current ...................................... 3.2.8 earth fault factor ........................................ 3.2.7 earthing resistance ..................................... 3.2.6 earths hort circuit current .............................. 3.2.9 earthed circuit ......................................... 3.3.10 earthing conductor ......................................3.3.12 earthing switch ...........