Mechanical
Rheological
Heat resistance
Thermal analysis
Physical
Electrical
Dielectric measurement
Electrostatic charging
Surface resistivity
Volume resistivity
Voltage resistance
CTI/tracking
Arc resistance
Corrosion
High voltage tracking resistance
Combustion (Fire)
Thermal aging
Weathering
Optical
Chemical resistance
Shrinkage
CTI / tracking
CTI / tracking


CTI / tracking
Standards:
DIN IEC 60112
VDE 0303 Part 1
or corresponding standards

CTI/tracking
This method is used to assess the relative resistance of insulating materials to tracking. As a general rule, two different test solutions (A and B) can be used to investigate tracking.
Results of the test method:

CTI (Comparative Tracking Index): Highest voltage at which no test specimen fail during testing on five samples and after the application of 50 drops in each case

PTI (Proof Tracking Index): Voltage at which during testing on five samples to which 50 drops are applied the samples pass the test with no failures/fail the test.