1、 54127-32011( 61557-3:2007) 1000 1500 . , 3 IEC 61557-3:2007Electrical safety in low voltage distribution systems up to 1000 V a. c. and 1500 Vd. c. Equipment for testing, measuring or monitoring of protectivemeasures Part 3: Loop impedance(MOD) 27 2002 . 184- , 1.02004 . 1 , - 4, 2 233 3 - 28 2011
2、. 373-4 61557-3:2007 1000 1500 . , . 3. (IEC 61557-3:2007 Electrical safety in lowvoltage distribution systems up to 1000 V a. c. and 1500 V d. c. Equipment for testing, measuring or monitoring ofprotective measures Part 3: Loop impedance). . 2999 . . . - . - . - 1.52004 ( 3.5)5 61557-320066 , - . (
3、) . - , , 2012 , - - II 54127-320111 .12 13 14 .25 45.1 45.2 46 .4 5III 54127-32011 1000 1500 . , 3 Low voltage distribution systems up to 1000 V a. c. and 1500 V d. c. Electrical safety. Equipment for testing, measuring ormonitoring of protective measures. Part 3. Loop impedance 201209011 , - , - ,
4、 ( ). 54127-1. 1 54127-1, . . - .2 . 523192005 ( 61010-1:2001) , . 1. ( 61010-1:2001, MOD) 54127-12010 ( 61557-1:2007) - 1000 1500 . -. , . 1. ( 61557-1:2007, MOD) - , 1 , - , . (), - () . , , , , .3 54127-1, :1 54127-32011( 61557-3:2007) 3.1 (loading method): , - .3.2 (loading equipment): , .3.3 (t
5、est current): , .3.4 (system phase angle): .3.5 (loopimpedance);ZS: , , - (, , ) .4 54127-1, .4.1 c177 30 % , - , 1. . 1 -, 6.1R c177 90 1 54127-1, 4.2R , -2 54127-1, - 4.2 4.3R 0C35C 3 54127-1, 4.2T 0 18 6 -, 4.1T 0 18 6.11) -, 4.1T 0 30 6.21) -, 4.1T 99 % 101 % -7 -, 4.1T 85 % 110 % -8 -, 4.1T 5 %
6、 - 0;6 % - 180;5 % 0 ( - , - )9 -, 4.1T2 54127-32011 1 - , , 0,5 % - - ., - 10 102) , 4.1 = c177 |A| + 1,15 c180 EEEEEEEE12223262728292102c43c43c43c43c43c43c43 - -, 4.1R1) 6.1 6.2 , .2) 10 , - , - PEN- 2.A ; n ; R - ; T .B % = c177B 100. - 54127-1, :- ;- 85 %110 % - , ;- 99 %101 % , ;- ;- . , - , ,
7、- ( 30), . , - , (, 50 ), 18(, 30), - .4.2 - , . 6.1 18 - 14 52319 - , .4.3 -, . , - , .3 54127-320114.4 50 . , 50 , 52319, 1.4.5 , , 120 % - , . .4.6 , , 173 % , 1 . .5 5.1 , 54127-1, :5.1.1 , - 4.1.5.1.2 , .5.1.3 , .5.1.4 , 18.5.2 - 54127-1:5.2.1 , 18.5.2.2 .5.2.3 , - 4.1.5.2.4 ( ), - 4.1.5.2.5 , , - .5.2.6 , , , - , , , - . , .6 54127-1 :6.1 1. :- ;-
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