Mitsubishi Electric MELPRO S Series Operation Manual page 22

Next, the figure two (2) which
means 2 nd latest phenomenon
is indicated.
The condition when relay
elements were operated
(tripped) is displayed on the
operation indicator.
Next, the figure three (3)
which means 3 rd latest
phenomenon is indicated.
The condition when relay
elements were operated
(tripped) is displayed on the
operation indicator.
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