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Measurement category I is for measurements performed on circuits not directly connected to# _- J% F+ L: g
MAINS.8 U X0 U, L) n3 U% B9 F# ^8 a
Examples are measurements on circuits not derived from MAINS, and specially protected (internal) MAINS derived circuits.: P0 [( L+ v8 Z% F2 e$ _ k2 N; m5 y( r
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?
% X- V9 \# y' P& dMeasurement category II is for measurements performed on circuits directly connected to the
* ], p: f7 o; O2 Flow voltage installation* f* J" G6 }5 Y, g D2 N
Examples are measurements on household appliances, portable tools and similar equipment
. A/ K3 V* K/ U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?
' K) J' A" Y1 }( @+ o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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