IDES > Resources > Plastic Material Properties > UL 746

High Volt Arc Track Rate (HTVR) - UL 746 Test Standard Explained

Apply for Access to 84,000 Datasheets • Share this page

Property information for specific grades of resin are available in the Prospector Plastics Database.
Property Search let's you search for plastics by more than 400 material properties.

High Volt Arc Track Rate (HVTR) - UL 746

HVTR is the rate that a tracking path can be produced on the surface of the material under standardized test conditions.

Performance Level Categories (PLC) were introduced to avoid excessive implied precision and bias.

HVTR Tracking Rate (mm/min)	PLC
0 through 10	0
10.1 through 25.4	1
25.5 through 80	2
80.1 through 150	3
>150	4

Property information for specific grades of resin are available in the Prospector Plastics Database.