... Winding, Sudden Jerk, Cut Through, Heat Shock, Room Temperature Breakdown Voltage, High Voltage Hole, and Pin-Hole, etc. Code Number Test StandardGB/T23312 ... 55R65RAnti-Solvent≥1h2hAlt-Throngh320°C,2minOKHot Shock240°C,30minOKBroken Down Voltage Will Room≥5.0KV11.3/9.7/12/11. ... 5/kvContinuityHigh Voltage Hole//Pin-Hole≤5pcs/6m1pcsConculusionOK3.Insulating Varnish for our ...