Sel 551 - Table D.5 A5 D1 Fast Meter Data Block; Table D.6 A5 C2;A5 C3 Demand;Peak Demand Fast Meter Configuration Messages

D.4
SEL-551 Relay Instruction Manual Date Code 20110408
Configuration, Fast Meter, and Fast Operate Commands
Message Definitions
A5D1 Fast Meter Data
Block
In response to the A5D1 request, the relay sends the following block:
A5C2/A5C3 Demand/
Peak Demand Fast
Meter Configuration
Messages
In response to the A5C2 or A5C3 request, the relay sends the following fast
meter configuration block:
Table D.5 A5D1 Fast Meter Data Block
Data Description
A5D1 Command
44 Message length
1-byte Status Byte
4-bytes Phase current scale factor (4-byte IEEE FPS)
4-bytes Neutral current scale factor (4-byte IEEE FPS)
32 bytes The first and third half-cycles of two cycles of data saved by the
relay. The data are presented in quarter-cycle sets of integer data in
the following order: IA, IB, IC, IN
8-bytes Time stamp
15-bytes SEL-551 Relay Word bits (see DNA message for bit map)
checksum 1-byte checksum of all preceding bytes
Table D.6 A5C2/A5C3 Demand/Peak Demand Fast Meter Configuration
Messages (Sheet 1 of 2)
Data Description
A5C2 or A5C3 Demand (A5C2) or Peak Demand (A5C3) command
4E Length
01 # of status flag bytes
00 Scale factors in meter message
00 # of scale factors
06 # of analog input channels
01 # of samples per channel
00 # of digital banks
00 # of calculation blocks
0004 Analog channel offset
0034 Time stamp offset
FFFF Digital offset
494100000000 Analog channel name (IA)
02 Analog channel type
FF Scale factor type
0000 Scale factor offset in Fast Meter message
494200000000 Analog channel name (IB)
02 Analog channel type
FF Scale factor type
0000 Scale factor offset in Fast Meter message
494300000000 Analog channel name (IC)
02 Analog channel type
FF
Scale factor type