scheider electric MiCOM P746, Техническое руководство

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Commissioning and Maintenance P746/EN CM/F21
MiCOM P746 (CM) 10-7
4.1.1 Visual inspection
Carefully examine the relay to see that no physical damage has occurred since installation.
The rating information given under the top access cover on the front of the relay should be
checked to ensure it is correct for the particular installation.
Ensure that the case earthing connections, bottom left-hand corner at the rear of the relay
case, are used to connect the relay to a local earth bar using an adequate conductor.
4.1.2 Current transformer shorting contacts
If required, the current transformer shorting contacts can be checked to ensure that they
close when the heavy duty terminal block is disconnected from the current input PCB.
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LINK LINK
ACTIVITY ACTIVITY
00.02.84.9F
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20148098 20148098
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IRIG-B12x
WindRiver
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CM
A – IRIG B / Ethernet / COMMS G – Sigma Delta Opto Board
B – Opto \ high break H – Relay \ Opto \ high break
C – Opto \ high break J – Relay \ high break
D – Sigma Delta analogue input board K – Relay \ high break
E – Sigma Delta Opto Board L – Relay board
F – Sigma Delta analogue input board M – Power supply board
FIGURE 1: REAR TERMINAL BLOCKS ON P746
The heavy duty terminal block is fastened to the rear panel using four crosshead screws.
These are located top and bottom between the first and second, and third and fourth,
columns of terminals (see Figure 2).
Note: The use of a magnetic bladed screwdriver is recommended to
minimise the risk of the screws being left in the terminal block or lost.