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.
3.10
Checking binary input and output circuits
3.10.1
Binary input circuits
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.
3.10.2
Binary output circuits
Preferably, disconnect the binary output connector from the binary output cards.
Check all connected signals so that both load and polarity are in accordance with
IED specifications.
3.11
Checking optical connections
Check that the Tx and Rx optical connections are correct.
An IED equipped with optical connections requires a minimum
depth 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.
Section 3
1MRK 511 248-UEN -
Starting up
28
Commissioning Manual
