44
Checking the binary I/O circuits
Chapter 6
Checking the external optical and
electrical connections
5
Checking the binary I/O circuits
5.1
Binary input circuits
Preferably, disconnect the binary input connector from the binary input cards. Check all con-
nected signals so that both input level and polarity are in accordance with the IEDs specifica-
tions.
5.2
Binary output circuits
Preferably, disconnect the binary output connector from the binary output cards. Check all con-
nected signals so that both load and polarity are in accordance with IED specifications.
Summary of Contents for RELION REL670
Page 8: ...Contents ...
Page 72: ...64 About this chapter Chapter 9 Establishing connection and verifying the LON communication ...
Page 174: ...166 Remote communication Chapter 11 Verifying settings by secondary injection ...
Page 190: ...182 Maintenance Chapter 13 Fault tracing and repair ...
Page 198: ...190 Glossary Chapter 14 Glossary ...