Common use of Endurance test Clause in Contracts

Endurance test. 6.5.1. The audible reverse warning device shall be supplied with current at the rated voltage and with the connecting lead resistances specified in paragraphs 6.3.4. to 6.3.6. above. 6.5.2. If the test is made in an anechoic chamber, the chamber shall be large enough to ensure normal dispersal of the heat released by the audible reverse warning device during the test. 6.5.3. Temperature endurance tests in series to be made on one and the same device as described below: 6.5.3.1. put the device at 70℃ in the temperature conditioning chamber (test chamber) for one hour; 6.5.3.2. put the device at -30℃ in the test chamber for one hour; 6.5.3.3. put the device under operation at 50℃ in the test chamber for one hour; 6.5.3.4. put the device under operation at -20℃ in the test chamber for one hour; 6.5.4. Durability test 50 hours operation continuously at 25℃ ± 11℃ 6.5.5. Vibration endurance test Cycles: 2000 cycles per minute ± 10% Amplitude: 2 mm ± 10% Directions: x, y, z three directions for each 30 minutes Temperature: 25℃ ± 11℃. 6.5.6. Put the device under operation at 25℃ ± 11℃ after the complete procedure in accordance with paragraphs 6.5.3. to 6.5.5. and check the acoustic performance in accordance with 6.3. and 6.4.