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Measurement category I is for measurements performed on circuits not directly connected to5 j( ?+ j/ k7 d* w3 w1 l* g
MAINS.
2 @2 I7 M* c( X3 T) K5 H& {* \- cExamples are measurements on circuits not derived from MAINS, and specially protected (internal) MAINS derived circuits.
6 `5 q, K3 i0 x! X$ M6 C8 U测量类别一说不直接与电网相连的电路,像次级电路也算吗?) u. `6 _8 o5 B7 x- ^# d( f- }0 T7 ]
Measurement category II is for measurements performed on circuits directly connected to the
1 M1 v" u5 S S: M, u* ]( ulow voltage installation
5 O. _. h* ?" _0 M2 NExamples are measurements on household appliances, portable tools and similar equipment( q' @+ v8 L3 t0 \6 A
测量类别二说是直接与低压设施相连的电路,但例子又说家用电器,一般的家用电器都是和电网相连的啊,那220V算是低压吗?
7 |, L2 D5 W+ e! E到底像通用的用插头连接电网供电的设备应该算测试类别几啊?感觉测试类别一和测试类别二区分的不太明显,他们的电气间隙在标准中也是一样大的,请知道的人给个准确直接点的回答啊 |
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