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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 6 i" N$ R) r7 l) Q9 G/ E& U
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.0 O( \1 O f1 A. [5 u) M5 b) }, D
Location Current(A) Frequency(Hz) Measured voltage(V) Limit(V)
) k/ h9 l' }$ a2 |Between incoming
, ~% h- A" T4 ?3 DPE terminal and
* A7 ~ `7 n3 e2 f1 x. v: ^9 Q7 z& F( Srelevant points , s2 E. ]# \* ]1 T2 V; g. W, c
that are part of 4 E( g6 e4 }( Z& n5 L, J; `: V" U
the protective 8 W3 U! F4 Z% x( O
bonding circuit ( o T& }7 N& e# P5 C- N3 b
PEФ>1.0 mm2 10A 50Hz --- <3.3V8 p1 m Y+ Z$ U. w. L
PEФ>1.5 mm2 10A 50Hz --- <2.6V' u( z. k H A% Y$ @
PEФ>2.5 mm2 10A 50Hz --- <1.9V
; t* d, Z& G0 kPEФ>4.0 mm2 10A 50Hz --- <1.4V# D* _: ~7 p! _2 g3 m0 Q$ x
PEФ>6.0 mm2 10A 50Hz --- <1.0V |
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