根据出版者的命令，历史UL文件不可出于任何原因退回。一旦您订购历史文件，我们将无法退款、贷记或进行任何形式的交换。这些要求包括用于连接15安培、标称120伏或240伏交流支路的直接插入式2级电源装置，以及 电线连接的2级电源装置，用于连接到15安培或20安培交流分支电路，接地电位为150伏或更低。这些产品 利用隔离变压器，并能够整合整流器和其他组件，以提供交流或直流（dc）电源。这些 产品可以配备可选的直流输入插孔，由车辆电池适配器供电。 这些产品提供2级功率级别 根据国家电气规范ANSI/NFPA 70，主要用于为低压电动设备供电。这些要求适用于在任何可能的输出负载条件下输入功率不超过660 W的产品。这些要求不包括电源装置可能对其连接的设备或系统产生的影响。标记为特定最终用途的产品（例如用于音频、无线电或视频类型设备；医疗或牙科设备；或工具）可能会受到以下限制: 适用最终产品标准中的附加要求。看见这些要求不包括为用于起动发动机的起动马达的蓄电池充电的产品。 这种类型的产品包含在UL 1236中 发动机起动机蓄电池充电用蓄电池充电器标准。这些要求包括本标准中定义的用于玩具的2类产品。此类产品还应符合UL 697标准 玩具变形金刚。

By order of the publisher, historical UL documents are not returnable for any reason. Once you place an order for an historical document, we cannot issue a refund, credit, or exchange of any kind.These requirements cover direct plug-in Class 2 power units intended for connection to a 15-ampere, nominal 120- or 240- volt ac branch circuit, and cord-connected Class 2 power units intended for connection to a 15- or 20- ampere ac branch circuit with a potential of 150 volts or less to ground. These products utilize an isolating transformer and are able to incorporate rectifiers and other components to provide a source of alternating- or direct-current (dc) supply. These products are able to be provided with an optional dc input jack, intended to be powered by a vehicle battery adapter. These products provide Class 2 power levels in accordance with the National Electrical Code, ANSI/NFPA 70, and are intended primarily to provide power to low voltage, electrically operated devices.These requirements cover products whose input power does not exceed 660 W under any possible condition of output loading.These requirements do not cover the effect that a power unit may have on the equipment or system to which it is connected.A product marked for a specific end-use (such as for use with audio-, radio-, or video-type equipment; medical or dental equipment; or tools) may be subject to additional requirements found in the applicable end-product standard. See.These requirements do not cover products intended to charge batteries for starter motors used to start engines. Products of this type are covered by UL 1236, the Standard for Battery Chargers for Charging Engine-Starter Batteries.These requirements cover Class 2 products, as defined in this standard, intended for use with toys. Products of this type shall also comply with UL 697, the Standard for Toy Transformers.