Part 2 of this standard specifies the performance test method for Resin impregnated fiberglass mesh latitude-free ties (mesh latitude-free bands) for electrical insulation. The mesh latitude-free bands suitable for semi-curing (stage B) cover their electric strength, high voltage and low current arc discharge, resistance to electric marking, heat resistance and other test requirements. Specimens need to be treated at 23 +/- 2 ° C and 50 +/- 5% relative humidity for 24 hours. In special cases, high temperature tests need to be carried out after treatment at the specified temperature for 45 minutes. This part provides the necessary test guidance to ensure the Reliability and safety of mesh latitude-free bands in practical applications.