Verify that the contact sockets have been crimped correctly and that they are
fully inserted by tugging on the wires. Never do this with current circuits in
service.
Current circuit
1.
Verify that the contacts are of current circuit type.
2.
Verify that the short circuit jumpers are located in the correct slots.
Voltage circuit
1.
Verify that the contacts are of voltage circuit type.
2.
Check that no short circuit jumpers are located in the slots dedicated for voltage.
Trip and alarm circuits
1.
Check that the correct types of contacts are used.
4.10
Checking the binary input/output circuits
M11722-2 v4
Do not insert anything else to the female connector but the corresponding
male connector. Inserting anything else (such as a measurement probe) may
damage the female connector and prevent a proper electrical contact between
the printed circuit board and the external wiring connected to the screw
terminal block.
4.10.1
Binary input circuits
M11722-4 v3
Preferably, disconnect the binary input connector from the binary input cards. Check all
connected signals so that both input level and polarity are in accordance with the IED
specifications.
4.11
Checking optical connections
M16022-2 v8
Check that the Tx and Rx optical connections are correct.
An IED equipped with optical connections has an minimum space requirement
of 180 mm for plastic fiber cables and 275 mm for glass fiber cables. Check the
allowed minimum bending radius from the optical cable manufacturer.
1MRK 505 385-UEN C
Section 4
Starting up
Breaker protection REQ650
35
Commissioning manual
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