AS/NZS 3120中Current breaking test疑惑

日夏清

AS/NZS 3120中Current breaking test要求不甚明白：
...
(a) A plug shall be inserted in the socket with no current flowing.
(b) Immediately following each full insertion, a current as prescribed in Items (i) and
(ii) shall be passed through a circuit including the plug and socket for 15 s.
(c) The plug shall be then withdrawn from the socket under load at a rate of
approximately 150 mm/s, and shall remain withdrawn for approximately 105 s.
...

以上是说插头插入插座时要求不通电流，插入后立即通电维持15S, 之后插头拔出插座，拔离插座的状态维持105S; 然后继续开始第二个循环吗？那有这样的插拔设备可以做到这个吗？一般我知道是直接机械插拔或者带电插拔，这个要求好像有点复杂，我也不明白标准这么要求是基于什么考虑？

另外，以下这句话是不是表示，如果产品带接地，要求接地也通电流！Where an earthing contact and an earthing pin are included, the earthing terminal of the socket shall be connected to the neutral terminal during the test.

期待高手解答，谢谢先La!