5.2.2.3 Appliances normally required to be operated with an earth connection
通常要求接地操作的器具。这种器具通常在安规中划分到I类器具里面去。
The appliance shall be placed at a distance of 0,8 m from the artificial mains V-network, the disturbance voltages to be measured in accordance with 5.2.1.
器具的放置应与V型人工电源网络相距0.8m,骚扰电压按照5.2.1进行测量。
The measurements shall be made with the earth terminal of the appliance connected to the reference ground of the measuring equipment.
If the appliance is not supplied with a lead the connection of the earth terminal of the appliance to the reference ground of the measuring equipment shall be made by a lead running parallel to the mains lead and of the same length and at a distance of not more than 0,1 m from it.
Appliance that, according to its design and/or weight, usually is standing on the floor while being in use (so-called floor standing equipment) is subject to the same provision as above.
由于设计和/或自重的原因,使用时经常放在地上的器具(即落地式器具)应同样满足上述规定。(但是也要满足下述规定,注意,其实下边讲的就是对落地式产品的测试布置。)
However,
– it shall be placed on a horizontal metal ground plane (the reference ground plane), but insulated from it by a non-metallic support (e.g. a pallet) of 0,1 m ± 25 % in height. If the measurements are made in a screened enclosure, the distance of 0,1 m ± 25 % shall be
referred to the metal ground of the screened enclosure;
器具应该放在水平金属接地平板上(参考接地平板),但要用高度为 0,1 m ± 25 % 的非金属支撑隔开(例如平板架)。如果测量在屏蔽室内进行。 0,1 m ± 25 % 的距离是指距屏蔽室的金属平面。
– the boundaries of the appliance shall have a distance of at least 0,4 m to a grounded vertical conducting surface of at least 2 m × 2 m in size. If the measurements are made in a screened enclosure, the distance of 0,4 m shall be referred to the nearest wall of the
enclosure。