标题: UL1993关联UL935 [打印本页] 作者: fumsga 时间: 2012-1-26 01:21 标题: UL1993关联UL935 6.3 Printed circuit boards
6.3.1 In the United States, printed circuit wiring is considered part of the ballast, and shall comply with UL 935 (see Clause 6.4.1).
6.4 Ballasts and LED drivers
6.4.1 In the United States, a ballast for fluorescent lamps shall comply with the requirements of UL 935 and have Class P thermal protection. A ballast for high-intensity discharge lamps shall comply with the requirements of UL 1029 and UL 935.
6.4.2 A ballast not previously investigated as described in Clause 6.4.1 shall be evaluated in the device.
The construction requirements of UL 935 or CSA C22.2 No. 74 or NOM-058-SCFI shall apply. See the appropriate standard for details on coil insulation materials, thermal and overcurrent protective components, printed wiring boards, and spacing of electrical parts on the printed wiring board.
6.4.3 A ballast for fluorescent lamps shall be subjected to the following tests:
b) The abnormal-temperature test and fault-condition test (Class P) thermally protected ballasts described in UL 935 or the fault conditions test described in CSA C22.2 No. 74 or the Condición de falla described in NOM-058-SCFI。
6.5 Power capacitors
In the United States, a power capacitor shall comply with the applicable requirements specified in UL 935.
6.6 Light source – fluorescent lamps
6.6.1 Fluorescent discharge lamps shall be tested to simulate end-of-lamp-life conditions as follows:
a) For a lamp operated with a conventional magnetic ballast, the lamp shall be subjected to a shorted starter or deactivated lamp condition as described in the abnormal temperature test in UL 935 or in CSA C22.2 No. 74.
6.7 Spacing of electrical parts
6.7.4 For a printed wiring board, the spacing of electrical parts for the ballast shall comply with the requirements of UL 935 or CSA C22.2 No. 74 as applicable. However, a) When the power available between two insulated parts is less than 50 W when determined
in accordance with the fault condition test of UL 935 (maximum: 1 minute), the spacing is not
required to comply with this requirement.
8.4 Leakage-current test
8.4.1 A device with an exposed non-current-carrying metal part shall comply with the leakage current requirements in UL 935 or CSA C22.2 No. 74 or NOM-058-SCFI. The measurement shall be made from any accessible non-current-carrying metal part of the enclosure of the device.
以上是UL1993关联到UL935的地方，如此说来，好像做了UL1993事实上基本要考虑UL935了，是这样理解吗？作者: hpulqw 时间: 2012-1-26 01:21
我们上次申请时, 在电器部分是以UL 935来做要求作者: 59779520 时间: 2012-1-26 01:21
那是肯定的，请看
6.4.7 Drivers for light-emitting diodes (LEDs) vary in complexity from simple to complex circuits. For the circuits, the requirements for construction and testing would be similar to what is required for ?uorescent
lamp ballasts.作者: KFCJF 时间: 2012-1-26 01:21
做UL1993就要将UL1993中所有相关测试都做，参考其他标准的也要做。作者: krwmrw 时间: 2012-1-26 01:21
本来就是这样啊，内部的镇流器就是UL935的要求