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Control Chapter 11
Verifying settings by secondary
injection
Information and material for the verification:
• Protection or control unit, Intelligent electronic device (IED), configured and
with settings entered.
• Configuration diagram for the IED
• Terminal diagram for the IED, or plant circuit diagram including the IED
• Technical reference manual for the IED
• Relay test set for secondary injection
• Means to indicate, measure and record operation and times, e.g. an event record-
ing facility
• A bi-stable relay (BR) or two auxiliary relays to simulate a CB
• Two push-buttons (SC, ST) to operate the BR and a change-over switch (SRY)
to simulate CBREADY
• Possibly a switch simulation the Synchronism check (SYNC) condition
Figure 35: Simulating the CB operation by a bi-stable relay and manual switches
IED
AR01 - CLOSE CB
Trip
AR01 - CB POS
AR01 - CB READY
BR
SC
ST
SRY
To test
set
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en04000202.vsd
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