1、 2 (IE/TR 61912-2:2009, IDT) , ()INTERSTATE COUNCIL FOR STANDARDIZATION, METROLOGY AND CERTIFICATION(ISC) IEC/TR61912-22013, 1.092 . 1.22009 . , - . , , -, 1 - - ( ) - , 52 (-)3 , (- 5 2013 . 61-) : ( 3166) 00497 ( 3166) 00497 AMBYKGMDRUTJUZ -4 21 2014 . 219- IE/TR 61912-22013 - 1 2016 .5 IE/TR 6191
2、2-2:2009 Low-voltageswitchgear and controlgear Overcurrent protective devices Part 2: Selectivity under over-currentcondition ( . . 2. ). (en). . - () . (IDT).6 - , - . () - . , , 2014 -, II IEC/TR 61912-220131 12 13 , .23.1 23.2 33.3 44 54.1 .54.2 .55 55.1 .55.2 IEC 60269 .116 () 146.1 146.2 147 ()
3、 157.1 157.2 .167.3 .168 () 17 () , 18 () .21 () ().25 27III IEC/TR 61912-22013 IEC 60947, IEC 60297,IEC 60898-1 IEC 61009-1 , -, - . , - . , , , . - , - . , , . - . - , IEC/R 61912-1. , - , .IV IEC/TR 61912-22013 2 Low-voltage switchgear and controlgear. Overcurrent protective devices.Part 2. Selec
4、tivity under over-current condition 201601011 , . :- IEC 60255-3, IEC 60255-6, IEC 60255-8, IEC 60255-12;- IEC 60269-1, IEC 60269-2, IEC 60269-3, IEC 60269-4;- IEC 60898-1;- IEC 60947;- IEC 61008-1;- IEC 61009-1. , , .2 . - , . - .IEC 60255 ( ) Measuring relays and protection equipment ( )IEC 60269-
5、1 Low-voltage fuses Part 1: General requirements ( -. 1. )IEC 60269-2 Low-voltage fuses Part 3: Supplementary requirements for fuses for use by skilledpersons (fuses mainly for industrial) Examples of standardized systems of fuses A to J ( . 2. , - ( , ). - J)IEC 60269-3 Low-voltage fuses Part 3: Su
6、pplementary requirements for fuses for use by unskilledpersons (fuses mainly for household or similar applications) Examples of standardized systems of fuses A toF ( . 3. -, ( , - ). F)1 IEC/TR 61912-22013 IEC 60269-4 Low-voltage fuses Part 4: Supplementary requirements for fuse-links for the protec
7、tionof semiconductor devices ( . 4. - )IEC 60898-1 Electrical accessories Circuit-breakers for overcurrent protection for household andsimilar installations Part 1: Circuit-breakers for a. c. operation ( . - . 1. )IEC 60947-2 Low-voltage switchgear and controlgear Part 2: Circuit-breakers ( - . 2. )
8、IEC 60947-4-1 Low-voltage switchgear and controlgear Part 4-1: Contactors and motor-starters Electromechanical contactors and motor-starters ( - . 4-1. . )IEC 60947-4-2 Low-voltage switchgear and controlgear Part 4-2: Contactors and motor-starters AC semiconductor motor controllers and starters ( -
9、. 4-2. )IEC 60947-6-2 Low-voltage switchgear and controlgear Part 6-2: Multiple function equipment Control and protective switching devices (or equipment) (CPS) ( . 6. . 2. ( ) ()IEC 61008-1 Residual current operated circuit-breakers without integral overcurrent protection forhousehold and similar u
10、ses (RCBs) Part 1: General rules ( () () - . 1. )IEC 61009-1 Residual current operated circuit-breakers with integral overcurrent protection forhousehold and similar uses (RCBOs) Part 1: General rules ( () () - . 1. )IEC/R 61459 Coordination between fuses and contactors/motor-starters Application gu
11、ide (- (). )IEC/R 61818 Application guide for low-voltage fuses ( -)IEC/R 61912-1 Low-voltage switchgear and controlgear Overcurrent protective devices Part 1:Application of short-circuit ratings ( . . )3 , 3.1 3.2.7 () 3.2.9 3.2.10 3.2.2 3.2.1 3.2.8 3.2.4 3.2.3 () 3.2.52 IEC/TR 61912-220133.2 3.2.1
12、 (coordination of overcurrent protectivedevices): - / . . IEC/R 61912-1.3.2.2 (overcurrent discrimination): - , , , - . , , - . 441-17-15 13.2.3 (selectivity of protection): - / () . 448-11-06 2 - , - , . .3.2.4 (selectivity limit current): () - - ( ) - ( - ) . 442-05-60, 3 1 - , . 2 - I2t.3.2.5 () (overcurrent protective devices (OSPD): , , - . 826-14-14, 4
