Schweitzer Engineering Laboratories SEL-421-4 - Page 699

12.3
Date Code 20171021 Instruction Manual SEL-421 Relay
Analog Quantities
AST01ET–AST32ET Automation SELOGIC math sequencing timer elapsed time Seconds (s)
AST01PT–AST32PT Automation SEL
OGIC sequencing timer preset time Seconds (s)
B1BCWPA, B1BCWPBA,
B1BCWPC
Breaker contact wear (Breaker 1) Percent
B1IAFA, B1IBFA,
B1ICFA
10-cycle average fundamental phase current angle (Breaker 1) Degrees [°] (±180)
B1IAFIM, B1IBFIM,
B1ICFIM
Breaker 1 filtered instantaneous phase current magnitude Amperes [A] (secondary)
B1IAFM, B1IBFM,
B1ICFM
10-cycle average fundamental phase current magnitude (Breaker 1) Amperes [A] (primary)
B1IARMS, B1IARMS,
B1IARMS
10-cycle average rms phase-current (Breaker 1) Amperes [A] (primary)
B1IGFIM Breaker 1 zero-sequence instantaneous current magnitude Amperes [A] (secondary)
B1IMAXM Breaker 1 maximum filtered instantaneous breaker phase current
magnitude
Amperes [A] (secondary)
B21IAFA, B21IBFA,
B2ICFA
10-cycle average fundamental phase current angle (Breaker 2) Degrees [°] (±180)
B2BCWPA, B2BCWPBA,
B2BCWPC
Breaker contact wear (Breaker 2) Percent
B2IAFIM, B2IBFIM,
B2ICFIM
Breaker 2 filtered instantaneous phase current magnitude Amperes [A] (secondary)
B2IAFM, B2IBFM,
B2ICFM
10-cycle average fundamental phase current magnitude (Breaker 2) Amperes [A] (primary)
B2IARMS, B2IARMS,
B2IARMS
10-cycle average rms phase-current (Breaker 2) Amperes [A] (primary)
B2IGFIM Breaker 2 zero-sequence instantaneous current magnitude Amperes [A] (secondary)
B2IMAXM Breaker 2 maximum filtered instantaneous breaker phase current
magnitude
Amperes [A] (secondary)
BNCDSJI BNC port 100 PPS data stream jitter µs
BNCOTJF Fast converging BNC port ON TIME marker jitter, coarse accuracy µs
BNCOTJS Slow converging BNC port ON TIME marker jitter, fine accuracy µs
BNCTBTW Time between BNC 100 PPS pulses µs
CTRW Current transformer ratio, Terminal W N/A
CTRX Current transformer ratio, Terminal X N/A
CUR_SRC Current high-accuracy time source N/A
DC1, DC2 Filtered station batt. dc voltage Volts [V]
DC1MAX, DC2MAX Maximum dc voltage Volts [V]
DC1MIN, DC2MIN Minimum dc voltage Volts [V]
DC1NE, DC2NE Average Negative to Ground dc voltage Volts [V]
DC1PO, DC2PO Average Positive to Ground dc voltage Volts [V]
DC1RI, DC2RI AC ripple of dc voltage Volts [V]
DDOM Date, day of the month (1–31) Day
DDOW Date, day of the week (1–SU,..., 7–SA) Day
DDOY Date, day of the year (1–366) Day
DFDTP Rate-of-change of frequency Hertz/seconds [Hz/s]
Table 12.1 Analog Quantities Sorted Alphabetically (Sheet 3 of 12)
Label Description Unit