UL 1023 CRD-2006 UL Standard for Safety Household Burglar-Alarm System Units - Section Paragraph Reference 38 2 (Edition 6 November 25 1996)《家用防盗警报系统的UL安全标准 节 段落参考 38 2 (第6版 1996年.pdf
《UL 1023 CRD-2006 UL Standard for Safety Household Burglar-Alarm System Units - Section Paragraph Reference 38 2 (Edition 6 November 25 1996)《家用防盗警报系统的UL安全标准 节 段落参考 38 2 (第6版 1996年.pdf》由会员分享,可在线阅读,更多相关《UL 1023 CRD-2006 UL Standard for Safety Household Burglar-Alarm System Units - Section Paragraph Reference 38 2 (Edition 6 November 25 1996)《家用防盗警报系统的UL安全标准 节 段落参考 38 2 (第6版 1996年.pdf(8页珍藏版)》请在麦多课文档分享上搜索。
1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUNDERWRITERS LABORATORIES CERTIFICATION REQUIREMENT DECISIONThis Certification Requirement Decision is prepared and published by Underwriters Laboratories (UL). Itis normative for the applicable
2、UL Product Certification Program(s); however, it is currently not part ofthe UL Standard(s) referenced below.Product Category (CCN): NBSXStandard Number: UL 1023Edition Date: November 25, 1996Edition Number: 6Section / Paragraph Reference: 48.4DECISION:The standard will be revised as follows:48.4.1
3、Each input/output circuit is to be tested as specified in 48.4.2 - 48.4.5. The signaling equipmentconnected to these circuits shall not false alarm, operate as intended, and, as appropriate, retain requiredstored memory (such as date, type, and location of a signal transmission) within the unit when
4、 subjectedto transient voltage pulses as described in 48.4.3. Supplemental information stored within the unit neednot be retained.Exception: A circuit or cable that interconnects equipment located within the same room need not besubjected to this test.48.4.2 The unit is to be energized in the normal
5、 standby condition while connected to a source of supplyin accordance with Table 25.1.48.4.3 For this test, each input/output circuit is to be subjected to five different transient waveforms havingpeak voltage levels in the range of 100 to 2400 volts, as delivered into a 200 ohm load. A transientwav
6、eform at 2400 volts shall have a pulse rise time of 100 volts per microsecond, a pulse duration ofapproximately 80 microseconds, and an energy level of approximately 1.2 joules. Other applied transientsshall have peak voltages representative of the entire range of 100 to 2400 volts, with pulse durat
7、ions from80 to 1110 microseconds, and energy levels not less than 0.03 joule or greater than 1.2 joules. Thetransient pulses are to be coupled directly onto the output circuit conductors of the equipment under test.48.4.4 Each input/output circuit is to be subjected to 60 transient pulses introduced
8、 at the rate of six pulsesper minute as follows:a) Ten pulses (two at each transient voltage level specified in 48.4.3) between one side of eachinput/output circuit and earth ground. Repeat the ten pulses with the polarity reversed (total of20 pulses).b) Repeat (a) between the other side of each inp
9、ut/output circuit and earth ground (total of 20pulses).c) Ten pulses (two at each transient voltage level specified in 48.4.3) across each input/outputcircuit. Repeat the ten pulses with the polarity reversed (total of 20 pulses).48.4.4.1 For these testsa, the transient generator is to be connected
10、to its alternating current (AC) powersource through an isolating transformer. The earthground of the transient generator is to be disconnectedfrom earthground.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULa) For 48.4.4(a) and (b), one output
11、 of the transient generator is connected to the earthgroundconnection of the product under test, and the other output is connected through a decouplingfixture to the terminal to be tested. To reverse the polarity, the connection at the product undertest is reversed. The earthground of the product sh
12、all be connected to earthground.b) For 48.4.4(c), one output of the transient generator is connected to one of the terminals tobe tested and the other output is connected through a decoupling fixture to the other terminal tobe tested. To reverse the polarity, the connection at the product under test
13、 is reversed. If theproduct is equipped with an earthground, it shall be connected to earthground.The decoupling fixture is a 200-ohm, 10-watt (minimum) resistor in series with a 1-microfarad, 1000-voltDC (minimum) capacitor.aCAUTION: Potentially lethal voltage are involved. The transient generator
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