In the example of CB simulation arrangement, the CBREADY condition is
simulated by a manual switch, SRY.
Information and material for the verification:
• Protection or control unit, 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
• IED test set for secondary injection
• Means to indicate, measure and record operation and times, for example an
event recording 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 synchronizing check SESRSYN condition
IED
CLOSECB
Trip
CBCLOSED
CBREADY
BR
SC
ST
SRY
To test
set
+ -
IEC04000202-3-en.vsd
IEC04000202 V3 EN-US
Figure 29: Simulating the CB operation by a bi-stable relay/breaker simulator
and manual switches
10.9.2.1 Preparation of the verification
M12400-40 v8
1MRK 506 377-UEN C Section 10
Testing functionality by secondary injection
Railway application RER670 2.2 IEC 137
Commissioning manual