Electric Insulating Material Coolant Compatibility
Applicable To:
Marketing Claim Verified by UL Solutions
EV Automotive Oil Coolant Insulation Material Chemically Compatible
Verification Method
Withstands 8 cycles (155°C for 40H and -45°C for 8H per cycle) in automatic transmission fluid: Oil ERO PLUS by SINOPEC The impregnating varnish/resin samples and oil-water mixture (3.0L oil and 10.8ml deionized water) are placed in a sealed stainless-steel vessel. Samples are conditioned as follows: - Place samples in ambient (25°C) chamber and increase the temperature, 2°C/min, to 155°C - Start first cycle by holding samples at 155°C for 40 hours - Transfer samples to -45°C cold chamber in less than 5 minutes - Hold samples at -45°C for 8 hours to complete first cycle - Transfer samples back to 155°C oven in less than 5 minutes to start second cycle. - Complete a total of 8 cycles The conditioned samples are assessed for Tensile Strength Test, Bond Strength Test, Permittivity, Dielectric Dissipation Factor, Volume Resistivity and Surface Resistivity, Electric Strength Test with acceptable results.
What is UL Verification?
UL Verification is an objective, science-based assessment that confirms the accuracy of marketing claims. Our independent assessment process scrutinizes the validity of specific advertising or promotional statements, giving you a way to separate verified fact from fiction.
