首页 > 国外线缆
[问题求助] 急问：UL62热变形测试发现有开裂
P:2010-05-14 08:46:25
3
5.1.8.1 PVC and TPE insulations
The insulation shall show no cracks when specimens of finished unjacketed cords and specimens of the
individual conductors from jacketed cords and types CXWTc, CXTWu, and TXc are exposed to a
temperature of 121 °C ± 2 °C for PVC or TPE rated at 60 °C, or 150 °C ± 2 °C for TPE rated in excess
of 60 °C for 1 h while wound six close turns around a mandrel having a diameter as shown in Table 43.
The specimen shall show no cracks when unwound from the mandrel after cooling to room temperature
The insulation shall show no cracks when specimens of finished unjacketed cords and specimens of the
individual conductors from jacketed cords and types CXWTc, CXTWu, and TXc are exposed to a
temperature of 121 °C ± 2 °C for PVC or TPE rated at 60 °C, or 150 °C ± 2 °C for TPE rated in excess
of 60 °C for 1 h while wound six close turns around a mandrel having a diameter as shown in Table 43.
The specimen shall show no cracks when unwound from the mandrel after cooling to room temperature
从标准上看,有裂纹显然是不能接受的!(The specimen shall show no cracks when unwound from the mandrel after cooling to room temperature)
line drop - 线路压降。在电力或传输系统中任意两点间产生之电压损失，此损失或压降是由于电阻，电抗（Reactance）或线路之洩漏（Leakage）而产生。 （0） 投诉
6
你需要登录才能发表，点击登录。