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3.接地连续性测试,简单测了个电机的,其他连接的点嫌费事,就没测 8 S" h% Q5 a. f2 a6 Z! t1 V
接地连连续性要测试所有裸露表面,除非是肯定的可靠接地.
; {* k! U" M- v/ G5 A6 l3 g" aLocation Current(A) Frequency(Hz) Measured voltage(V) Limit(V)
$ N( I$ W2 D/ M8 L; Q2 Z1 lBetween incoming
0 v" ~9 ~* ^/ X. nPE terminal and 3 e; X% w6 K( C3 J/ ]2 E9 c, `
relevant points
( ]$ `3 Y) F$ u) c6 C' F [7 Zthat are part of
" d+ f5 ~" t" H, L0 |5 lthe protective 7 ?/ L8 N# {7 {4 x: O- Y
bonding circuit 6 I0 K1 M9 i, Q/ V. w0 s! }
PEФ>1.0 mm2 10A 50Hz --- <3.3V
" } m) {3 O, ], Y2 p3 j+ NPEФ>1.5 mm2 10A 50Hz --- <2.6V. K" U4 _( t9 V4 G6 x; ^' E6 P( C
PEФ>2.5 mm2 10A 50Hz --- <1.9V$ K; O0 a6 k0 M+ }! J, c0 `1 }
PEФ>4.0 mm2 10A 50Hz --- <1.4V" Y% @. S6 V6 M- K
PEФ>6.0 mm2 10A 50Hz --- <1.0V |
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