| 摘要 |
PROBLEM TO BE SOLVED: To provide an electrical connection state display equipment and an electrical connection state display method indicating such that a third party can confirm without fail a grounded state and a circuit setting state such as connection state of a measuring instrument. SOLUTION: In exchanging components of an electrical circuit, e.g. a circuit in a distribution board 81, an electric current in a circuit of the distribution board 81 is cut off by switching off a high voltage vacuum circuit breaker 5 on a front door 82 of a distribution board 81. After confirming shut-off of the current by opening a back door 83, it is short-circuited by clipping R, S, T, exposed on a three-phase alternating current power supply circuit with alligator clips 27-29. This short-circuit is grounded by clipping a grounding circuit 90 with an alligator clip 30. A removable display circuit 40 indicating 'grounded' for the grounded state is set on the same surface and near the high voltage vacuum circuit breaker 5 on the front door 82 of the distribution board 81. After this, the work of component exchanging is started. |
