IEC 60669.1, IEC 60884-1 2013 clause 12.3.11
The screwless terminal thermal stress tester is specially designed to test whether or not electrical terminals can withstand the thermal stresses occurring during normal use.
1. Test cycles: 192 cycles, current flow for 30min, no current flow for 30min;
2. Power supply: AC220V 5A 50HZ;
3. Test current: AC 1~99.9A±(3%±1A);
4. Voltage drop measurement: 0~199.9±(3%±1mv)
Loading the screwless terminals for 1 h with an alternating current as specified in table 10 and connecting the rigid solid conductors 1 m long with a nominal cross-sectional area as specified in the same table. Then measure the voltage drop.