The temperature resistance performance test of the connecting wire can be carried out according to the "three-step method":

Equipment preparation

High and low temperature test chamber: temperature range covering -40 to+125, temperature control accuracy ± 2

• Recording device: Real time monitoring of conductor resistance and insulation resistance.

testing procedure

(1) Low temperature test: -40 ± 2, lasting for 168 hours

(2) High temperature test:+70~+125 (according to product grade), lasting for 168 hours;

(3) Temperature shock: -40 ↔+ 125, cycle 100 cycles, conversion time ≤ 30 seconds

Judgment criteria

The change in conductor resistance is ≤± 5%;

Insulation resistance ≥ 5 M Ω (conventional) or ≥ 100 M Ω (high voltage)