10.4
SEL-421 Relay Instruction Manual Date Code 20171021
Communications Interfaces
Communications Database
The DEMAND region contains demand and peak demand information. This
region is updated every 15 seconds. See Table 10.4 for the Map.
1088 NEA float Negative A-Phase energy in KWh
108A NEB float Negative B-Phase energy in KWh
108C NEC float Negative C-Phase energy in KWh
108E NE float Total negative energy in KWh
Table 10.4 SEL-421 Database Structure—DEMAND Region
Address
(Hex)
Name Type Description
2000 _YEAR int Four-digit year when data were sampled
2001 DAY_OF_YEAR int 1–366 day when data were sampled
2002 TIME(ms) long int Time of day in ms when data were sampled
(0–86,400,00)
2004 IA float A-Phase demand current
2006 IB float B-Phase demand current
2008 IC float C-Phase demand current
200A I0 float 0-sequence demand current
200C I2 float 2-sequence demand current
200E PA float A-Phase demand real power
2010 PB float B-Phase demand real power
2012 PC float C-Phase demand real power
2014 P float Total demand real power
2016 SA float A-Phase demand apparent power
2018 SB float B-Phase demand apparent power
201A SC float C-Phase demand apparent power
201C S float Total demand apparent power
201E PK_IA float A-Phase demand current
2020 PK_IB float B-Phase demand current
2022 PK_IC float C-Phase demand current
2024 PK_I0 float Zero-sequence demand current
2026 PK_I2 float Two-sequence demand current
2028 PK_PA float A-Phase demand real power
202A PK_PB float B-Phase demand real power
202C PK_PC float C-Phase demand real power
202E PK_P float Total demand real power
2030 PK_SA float A-Phase demand apparent power
2032 PK_SB float B-Phase demand apparent power
2034 PK_SC float C-Phase demand apparent power
2036 PK_S float Total demand apparent power
Table 10.3 SEL-421 Database Structure—METER Region (Sheet 3 of 3)
Address
(Hex)
Name Type Description
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