Schweitzer Engineering Laboratories SEL-421-4 - Page 712

12.16
SEL-421 Relay Instruction Manual Date Code 20171021
Analog Quantities
B1IARMS, B1IARMS,
B1IARMS
10-cycle average rms phase-current (Breaker 1) Amperes [A] (primary)
B2IARMS, B2IARMS,
B2IARMS
10-cycle average rms phase-current (Breaker 2) Amperes [A] (primary)
VAFM, VBFM, VCFM 10-cycle average fundamental phase voltage magnitude Kilo-volts [kV] (primary)
VAFA, VBFA, VCFA 10-cycle average fundamental phase voltage angle Degrees [°] (±180)
VARMS, VBRMS, VCRMS 10-cycle average rms phase-voltage Kilo-volts [kV] (primary)
VABFM, VBCFM, VCAFM 10-cycle average fundamental phase-to-phase voltage magnitude Kilo-volts [kV] (primary)
VABFA, VBCFA, VCAFA 10-cycle average fundamental phase-to-phase voltage angle Degrees [°] (±180)
VABRMS, VBCRMS,
VCARMS
10-cycle average rms phase-to-phase voltage magnitude Kilo-volts [kV] (primary)
V1M 10-cycle average positive-sequence voltage magnitude Kilo-volts [kV] (primary)
V1A 10-cycle average positive-sequence voltage angle Degrees [°] (±180)
VNMAXF Instantaneous filtered maximum phase-to-neutral voltage magnitude Volts [V] (secondary)
VNMINF Instantaneous filtered minimum phase-to-neutral voltage magnitude Volts [V] (secondary)
VPMAXF Instantaneous filtered maximum phase-to-phase voltage magnitude Volts [V] (secondary)
VPMINF Instantaneous filtered minimum phase-to-phase voltage magnitude Volts [V] (secondary)
3V2M 10-cycle average negative-sequence voltage magnitude Kilo-volts [kV] (primary)
3V2A 10-cycle average negative-sequence voltage angle Degrees [°] (±180)
3V0M 10-cycle average zero-sequence voltage (magnitude) Kilo-volts [kV] (primary)
3V0A 10-cycle average zero-sequence voltage (angle) Degrees [°] (±180)
Apparent, Real, and Reactive Power
PA_F, Pb_F, PC_F Fundamental real power Megawatts [MW] (primary)
3P_F Fundamental real power (three-phase) Megawatts [MW] (primary)
PA, PB, PC Real phase power Megawatts [MW] (primary)
3P Three-phase real power Megawatts [MW] (primary)
QA_F, QB_F, QC_F Fundamental reactive power (phase) Megavars [MVAr] (primary)
3Q_F Fundamental reactive three-phase power Megavars [MVAr] (primary)
SA_F, SB_F, SC_F Fundamental apparent power (phase) Megavolt-amperes [MVA]
(primary)
3S_F Fundamental apparent three-phase power Megavolt-amperes [MVA]
(primary)
UA, UB, UC Apparent power (phase) Megavolt-amperes [MVA]
(primary)
3U Apparent three-phase power Megavolt-amperes [MVA]
(primary)
DPFA, DPFB,DPFC Phase displacement power factor N/A
3DPF Three-phase displacement power factor N/A
PFA, PFB, PFC Power factor (phase) N/A
3PF Three-phase power factor N/A
Synchronizing Quantities
VPM VP voltage magnitude Volts [V] (secondary)
NVS1M, NVS2M Voltage magnitude Volts [V] (secondary)
Table 12.2 Analog Quantities Sorted by Function (Sheet 5 of 13)
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