Q GDW 469-2010 钳形接地电阻测试仪检验规程及编制说明.pdf

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1、Q/GDW469 ICS29.240 2 9 . Q/GDW 469 2010 Inspectionregulationofclampgroundresistancetester 2 0 1 0 - 0 6 - 1 3 2 0 1 0 - 0 6 - 1 3 Q/GDW469 I II 1 1 2 1 3 1 4 1 5 2 A 3 B 7 C 9 D 11 13Q/GDW469 II 2007 2007 555 A B C D Q/GDW469 1 GB 4793.1 2007 1 JJF1001 1998 JJF1059 1999 JJF1075 2001 JJG366 2004 DL/T

2、475 2006 DL/T887 2004 clampgroundresistance tester DL/T887 2004 3.10 jawofclampgroundresistancetester 500V 5M 15 35 75 Q/GDW469 2 50Hz 1min 10mA 150V 1kV 150V 2kV 30 a R x b R m 1 R x R m a b 2 1 a a b a/b 5 1 1.0 2.0 5.0 10.0 a 1.0 2.0 5.0 10.0 1/5 1/10 24h 2 Q/GDW469 3 2 23 3 R.H. 60 15 mT 0 0.025

3、 2h 2 k=2 1/3 5.2 3 3 * * 1. 2. 3. * 4.1 10.0 4.2 5M Q/GDW469 4 4.3 1min 4.4 1 5 10 3 1 10 R 1 1 R 2 R=|R 2 -R 1 | 2 1 R R 0 2 1 R R 0 24h 2 1 Q/GDW469 5 A 10 0.25 0.02 JJF1059 A A A A / / A A A R X R N A.1 R X R N A R X R N A u(R X ) R X u(R X ) A 10 R Xi i 1 2 3 10 S(R X ) u(R X ) S(R X ) A.1 A.1

4、10 1 2 3 4 5 6 7 8 9 10 9.97 9.98 9.96 9.96 9.98 9.99 9.98 9.97 9.97 9.96 S(R X ) 0.0103 u(R X ) 0.0103 A u(R N ) R N u(R N ) B u(R N ) a u(R N ) a/ 3 a 0.02 u(R N ) 0.02/ 3 Q/GDW469 6 A A C X / R X 1 A.2 C N / R N 1 A.3 A A.2 R X 0.0103 1 R N 0.0115 -1 A R X R N 2 2 2 2 ( ) ( ) ( ) C X X N N u C u R C u R A.4 A.4 u C ( ) 0.0154 A k 2 10 U k u C ( ) 0.0308 A 10 U 0.031 k 2 Q/GDW469 7 B / 1. 2. M 3. 4. 5. B.1 / 6. 7. B.2 Q/GDW469 8 8. B.3 9. B.4 Q/GDW469 9 C 1. 2. M 3. 4. 5. C.1 / 6. 7. 8. C.2