Sound LevelsAll general-purpose tra

Sound Levels
All general-purpose transformers are as quiet, or quieter than
required by NEMA ST-20. Average sound levels are warranted not
to exceed the values listed for each load rating shown in the
adjacent table. Sound characteristics vary between transformers
of identical voltage and kVA rating. The range of variation may be
4 to 8 decibels.
These values apply only to specified test conditions because the
characteristic of the installation can cause them to be higher
under operating conditions. Where acoustical noise is deemed to
be of unusual concern, proper steps should be taken during
installation to minimize audible noise transmission.
TransforMore™ sound levels are ≤67dB and meet specs in the table
below when the fans are off and the transformer is operating at less
than 50% rated load.
Sound Levels (Decibels)1 for 150°C Rise Models
kVA Sound Levels
0 - 9 40
10 - 50 45
51 - 150 50
151 - 300 55
301 - 500 60
1Measured per NEMA ST-20.

結果 (中文) 1:

声音的水平所有的通用变压器是一样安静，或比安静所需的 NEMA ST-20 所示。平均声级不是值得超过列出每个评分中所示的负载的值邻接表。酣然的特征差异变形金刚相同的电压和千伏安额定值。变化范围可能4 到 8 分贝。这些值仅适用于指定的测试条件因为特性的安装可能会导致它们要高根据操作条件。噪声被认为不寻常的关注，期间应采取适当的步骤安装尽量减少噪音传播。TransforMore™ 声级是 ≤67dB 和满足规格表中当球迷们关闭和变压器下面正运行于较少超过 50%额定负荷。声音级别 （分贝） 1 150 ° C 上升模型千伏安声音级别0-9 4010-50 4551-150 50151-300 55301-500 601Measured 每 NEMA ST-20。

結果 (中文) 3:

声级所有通用的变压器是安静的，或安静的采用NEMA st-20要求。平均声音水平是必要的超过所示的每一个负载量所示的值邻接表。变压器的声音特性各不相同相同的电压和kVA额定。变化范围可能4至8分贝。这些值只适用于特定的测试条件，因为安装的特性可以使它们更高在操作条件下。噪音被认为是不寻常的关注，应该采取适当的措施在安装，以尽量减少噪音传输。transformore™声级≤67dB和满足表中的规格下面当风扇关闭和变压器是在较低超过50%额定负载。声级（分贝）1 150°C上升模型A声级0 - 40 910 - 45 5051 - 50 150151 - 55 300301 - 60 5001通过每NEMA st-20。