ABB Relion 650 Series Commissioning Manual page 81

1MRK 511 248-UUS A
The CB condition CBREADY of a type, CO, shall be high (true) until a closing operation is
performed. It then goes low (false) for a recharging time of about 5 - 10s. After that it is high
again.
A CB condition CBREADY of a type, OCO shall be high (true) before and during tripping (Initiate
reclosing). During tripping it goes low for a recharging time, for example, 10s. It may thus be low
at the instant of reclosing. After each Open or Close operation it may need a recharging period
before it goes high again.
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 (25) condition
IED
SMBRREC (79) - CLOSECB
Trip
SMBRREC (79) - CBPOS
SMBRREC (79) - CBREADY
ANSI09000206 V1 EN-US
Figure 14: Simulating the CB operation by a bi-stable relay/breaker simulator and manual
Bay control REC650
Commissioning manual
switches
© Copyright 2011 ABB. All rights reserved
BR
SC
ST
SRY
To test
set
SMBRRECSimulatingtheCBoper
ationbyabistablerelayand =
ANSI09000206_en_1
Section 7
Testing functionality
+ -
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