新增了
CL.19 1.0mm temperature rise test 16A (1小时L-N,1小时N-PE,温升<45K)
CL.21a normal operation earthing tube(1.0mm)(插拔,用直径4.8~4.86铜棒,插拔次数 10000 storkes,30次/min,插一次,拔一次)
CL.21b 1.0mm temperature rise test (插拔后温升<45K)
CL.22 Maximum withdrawal force on the earthing contact tube18N (18N的治具必须落下)