Sel 411L - Figure 9.11 Circuit Breaker Preload Data

P.9.19
Date Code 20151029 Protection Manual SEL-411L Relay
Monitoring and Metering
Circuit Breaker Monitor
=>BRE 1 P <Enter>
Accum Contact Wear (%) A-phase % : 5 ? 12 <Enter>
B-phase % : 10 ? 15 <Enter>
C-phase % : 7 ? 10 <Enter>
Accum Num of Operations: A-phase : 25 ? 11 <Enter>
B-phase : 25 ? 11 <Enter>
C-phase : 25 ? 11 <Enter>
Accum Pri Current (kA) Trip A : 99.0 ? 299 <Enter>
Trip B : 98.0 ? 254 <Enter>
Trip C : 98.0 ? 257 <Enter>
Pole A Pole B Pole C
Accum Contact Wear (%) 12 15 10
Accum Num of Operations 11 11 11
Accum Pri Current (kA) 299 254 257
Figure 9.11 Circuit Breaker Preload Data
When performing circuit breaker testing, capture the BRE 1 P information
(write the date or use a terminal screen capture) before testing. Test the circuit
breaker, then enter the previously recorded preload data with the BRE 1 P
command. Using this method, you can eliminate testing operations from
actual usage data in the circuit breaker monitor.
Compressed ASCII Circuit Breaker Report
You can retrieve a Compressed ASCII circuit breaker report by using the CBR
command from any communications port.
The relay arranges items in the Compressed ASCII circuit breaker report in a
special order. For the purpose of improving products and services, SEL
sometimes changes the items and item order.
The information presented below explains the message and serves as a guide
to the items in a Compressed ASCII configuration circuit breaker report.
The format of the Compressed ASCII CBR message is the following.
“RID”,“SID”,“FID”,“yyyy”
relayid,station,fidstring,"yyyy"
"BID","yyyy"
breakerid,"yyyy"
"AVG_TR_ELE","LST_TR_ELE","AVG_TR_MEC","LST_TR_MEC","LST_TRmDC1",
"LST_TRmDC2","TR_INAC(d)","MAX_TR_SCA","LST_TR_SCA", "AVG_CL_ELE",
"LST_CL_ELE","AVG_CL_MEC","LST_CL_MEC","LST_CLmDC1",
"LST_CLmDC2","CL_INAC(d)","MAX_CL_SCA","LST_CL_SCA", "ACC_I(kA)",
"ACC_WEAR(%)","MAX_INT_I(%)","LAST_INT_I(%)","NUM_OPS","yyyy"
fff,fff,fff,fff,fff,fff,iii,fff,fff,fff,fff,fff,fff,fff,fff,iii,fff,fff,
fff,fff,fff,fff,iii,"yyyy"
fff,fff,fff,fff,fff,fff,iii,fff,fff,fff,fff,fff,fff,fff,fff,iii,fff,fff,
fff,fff,fff,fff,iii,"yyyy"
fff,fff,fff,fff,fff,fff,iii,fff,fff,fff,fff,fff,fff,fff,fff,iii,fff,fff,
fff,fff,fff,fff,iii,"yyyy"
"AVG_MOT_RT","LST_MOT_RT","RST_MONTH","RST_DAY","RST_YEAR","RST_HOUR","RST_MIN","RS
T_SEC","yyyy"
iii,iii,iii,iii,iii,iii,iii,iii,"yyyy"
Definitions for the items and fields in the Compressed ASCII configuration
are the following:
➤ yyyy is the checksum
➤ iii is an integer value
➤ fff is a floating-point value
The relay reports the data as A-phase in the first line, B-phase in the second
line, and C-phase in the third line. Pole scatter data are slightly different: TAB
is in the first line, TBC is in the second line, and TCA is in the third line.