Sel SEL-421 - Page 664

R.B.10
SEL-421 Relay Reference Manual Date Code 20111215
Analog Quantities
Quantities Listed by Function
3Q_f Three-phase fundamental reactive power MVAr
a
SA_f, SB_f, SC_f Phase fundamental apparent power MVA
a
3S_f Three-phase fundamental apparent power MVA
a
UA, UB, UC Phase apparent power MVA
a
3U Three-phase apparent power MVA
a
DPFA, DPFB, DPFC Phase displacement power factor NA
3DPF Three-phase displacement power factor NA
PFA, PFB, PFC Phase power factor NA
3PF Three-phase power factor NA
Demand
IAPKD, IBPKD, ICPKD Phase peak demand current A
a
3I2PKD Negative-sequence peak demand current A
a
IGPKD Zero-sequence peak demand current A
a
PAPKD, PBPKD, PCPKD Phase peak demand real power MW
a
3PPKD Three-phase peak demand real power MW
a
QAPKD, QBPKD, QCPKD Phase peak demand reactive power MVAr
a
3QPKD Three-phase peak demand reactive power MVAr
a
UAPKD, UBPKD, UCPKD Phase peak demand apparent power MVA
a
3UPKD Three-phase peak demand apparent power MVA
a
IAD, IBD, ICD Phase demand current A
a
3I2D Negative-sequence demand current A
a
IGD Zero-sequence demand current A
a
PAD, PBD, PCD Phase demand real power MW
a
3PD Three-phase demand real power MW
a
QAD, QBD, QCD Phase demand reactive power MVAr
a
3QD Three-phase demand reactive power MVAr
a
UAD, UBD, UCD Phase demand apparent power MVA
a
3UD Three-phase demand apparent power MVA
a
Energy
MWHAOUT, MWHBOUT, MWH-
COUT
Phase positive (export) energy MWh
a
MWHAIN, MWHBIN, MWHCIN Phase negative (import) energy MWh
a
MWHAT, MWHBT, MWHCT Phase total energy MWh
a
3MWHOUT Three-phase positive (export) energy MWh
a
3MWHIN Three-phase negative (import) energy MWh
a
3MWH3T Three-phase total energy MWh
a
RTD Temperature
RTD01–RTD12 Instantaneous temperatures from the SEL-2600 °C
MIRRORED BITS
MB1A–MB7A MIRRORED BITS communications A Channel received analog values NA
MB1B–MB7B M
IRRORED BITS communications B Channel received analog values NA
Table B.2 Analog Quantities Sorted By Function (Sheet 3 of 7)
Label Description Units