4.04 	安全檢測Safety test	工作溫度下電氣強度               dielectric strength						YD2673耐壓測試儀YD2673 elctric strength tester	Q/EZ7。81-2006 chapter 5 section2	
4.05 		工作溫度下泄漏電流                          leakage current						XLD-6A型泄漏電流測試儀/XLD-6A lekage current tester	GB4706.1-2005  chapter13	
4.06 		變壓器過載保護 overload protection of transformers						點溫計  thermometer	GB4706.1-2005/17	
4.07 		"非正常工作
Abnormal operation"						點溫計                             thermometer	GB4706.1-2005 /19	
4.08 		電快速瞬變                     Fast transient /Burst						BESTEMC	GB4706.1-2005 / 19.11.4.3	
4.09 		靜電放電 ESD						BESTEMC		
4.10 		浪涌  Surges						BESTEMC	GB4706.1-2005 / 19.11.4.4	
4.11 		電壓暫降和短時中斷Voltage dips and interruption						BESTEMC	GB4706.1-2005 / 19.11.4.6	
4.12 		電氣間隙和爬電距離clearance&creepage distance						游標卡尺                       Callipers	Q/EZ7。81-2006 chapter 2 section4.3	
4.13 		耐熱                                   resistance to heat						烘箱                heating cabinet	GB4706.1-2005/30.1	
4.14 		耐燃                                   resistance to fire						灼熱絲試驗儀         glow-wire tester	Q/EZ7。81-2006 chapter 4 section4	
4.15 		耐漏電起痕             proof tracking index(PTI)						漏電起痕儀            tracking path tester		
4.16 		其它other