The number of operations and mechanical life test arrangements <br>1. The total number of operations of division cycles: 2 <br>2. Operation of the testing of each test cycle: 2000 times <br>the lowest operating voltage: C-10s-O-10s 500 times <br>the rated operating voltage: C-10s O--10s 500 times <br>the maximum operating voltage: C-10s O--10s 500 times <br>the rated operating voltage: O-0.3s-CO-15s -C-15s 250 times <br>Note: ta represents the two operations the time interval between <br>2. test conditions <br>opening speed, closing speed shall comply with the technical documentation <br>meet the technical requirements specified <br>auxiliary contacts of the auxiliary switch body along with the examination <br>meet <br>during the test, without replacing parts, repair any part not <br>meet <br>test operating frequency <br>120 times / h <br>prior to each cycle predetermined for a small fuel and fastening <br>satisfied
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