The temperature at which a short-circuit current is generated between the samples for softening breakdown by making the two wire samples intersect vertically, and applying a specified load to the intersection point. express. NOTE: In many cases, the softening breakdown…
Test 9 : Thermal shock (for enameled wire and film wrapped wire)
Thermal shock reflects the ability of a specimen to withstand the temperature after being stretched and/or coiled or bent on a round bar. 1.1 Sample Preparation 1.1.1 Park Line Specimens shall be prepared as follows: For enameled wires whose conductor…
Test 15:Temperature index
Abstract: Determination of enameled round wire by constant temperature life and dynamic thermogravimetric test The method of thermal life and temperature index, as the choice for evaluating the insulation structure of electrical equipment The basis for choosing enameled wire. After…
Test 23: Pin hole test
Scope of application: It is suitable for the continuity test of checking the paint film of enameled round wire with a nominal diameter of 0.070mm and above and 0.700mm and below. According to the standard: G Test equipment: Salt water…
Test 19: Dielectric dissipation factor (applicable to enamelled round wire and bunched wire)
This test method is applicable to the determination of the dielectric loss tangent (tand) of enameled round wires. Measurements should be made at a frequency of about 1MHz. This test method is also applicable to the determination of the dielectric…
Test 14: Continuity of insulation(applicable to enamelled round and tape wrapped round wire)
1.1 General 1.2Low-voltage continuity (nominal conductor diameter up to and including 0,050 mm, grade 1 to grade 3) 1.3 High-voltage continuity (nominal conductor diameter over 0,050 mm up to and including 1,600 mm, grade 1 to grade 3, and over…
Test 13: Breakdown voltage
This test method is suitable for determining the breakdown voltage resistance of the paint film of enameled flat wire under normal or high temperature conditions. The provisions of this standard are consistent with the provisions of the International Electrotechnical Commission…
Test 8: Flexibility and adherence
1.1 Mandrel winding test 1.1.1 Round wire 1.1.2Rectangular wire5.1.3Covered bunched wire 1.2 Stretching test (applicable to enamelled round wire with a nominal conductor diameter over 1,600 mm) 1.3Jerk test (applicable to enamelled round wire with a nominal conductor diameter of…
Test 17: Solderability
1.1 General This test is applicable to enamelled round wire and bunched wire. Solderability is expressed by the time of immersion of the specimen in a solder bath required to remove the coating and to coat the conductor with solder.…
Test16: Resistance to refrigerants
1.1 General This test is applicable to enamelled round wire. Resistance to refrigerant is expressed by the quantity of matter extracted from the coating of the wire and by the breakdown voltage after exposure to a refrigerant. NOTE 1 The…