UL 508 CRD-2012 工业控制设备的UL安全标准. 节/段落参考: 第39.3段例外情况 (第十七版: 1999年1月28日)
UL Standard for Safety Industrial Control Equipment - Section/Paragraph Reference: Section 61C Subject: Expansion of Electrical Ratings for Electronic Ballasts (Edition 17: January 28, 1999)