The ability to power on and off and overload capacity required by the performance of metal heating tubes, data source: People's Republic of China machinery industry standard JB/T2379-2016 "Metal Tubular Electric Heating Element".
5.3.6 Ability to withstand on-off and off-power:
The components undergo 2000 on-off tests under the specified test conditions without damage.
5.3.7 Overload capacity:
The component should be able to withstand 30 cycles under specified test conditions and input power without damage.
