hwi plc of 4中文意思

.CTI:
Comparative Tracking Index (CTI; ASTM D3638 ) — Expressed as that voltage which causes tracking after 50 drops of 0.1 percent ammonium chloride solution have fallen on the material. The results of testing the nominal 3 mm thickness are considered representative of the material's performance in any thickness.
The above characteristics and dielectric strength, volume resistivity and other electrical and mechanical properties may be determined by means of the applicable ASTM and/or UL specification in ANSI/UL 746A, "Polymeric Materials - Short Term Property Evaluations."

5.HAI:
High- Current Arc Ignition (HAI; ANSI/UL 746A ) — Performance is expressed as the number of arc rupture exposures (standardized as to electrode type and shape and electric circuit) that are necessary to ignite a material when they are applied at a standard rate on the surface of the material.

6.HWI:Hot-Wire Ignition (HWI; ASTM D3874, IEC 60695-2-20 )