11.39
Date Code 20171021 Instruction Manual SEL-421 Relay
Relay Word Bits
Row Lists
26 LD_DPFA Leading A-Phase displacement power factor
26 LD_DPFB Leading B-Phase displacement power factor
26 LD_DPFC Leading C-Phase displacement power factor
26 LD_DPF3 Leading three-phase displacement power factor
26 * Reserved
27 PFA_OK A-Phase power factor OK
27 PFB_OK B-Phase power factor OK
27 PFC_OK C-Phase power factor OK
27 PF3_OK Three-phase power factor OK
27 DPFA_OK A-Phase displacement power factor OK
27 DPFB_OK B-Phase displacement power factor OK
27 DPFC_OK C-Phase displacement power factor OK
27 DPF3_OK Three-phase displacement power factor OK
27 * Reserved
Table 11.6 Relay Word Bits: Directional Elements
Row Name Description
28 F32P Forward phase directional declaration
28 R32P Reverse phase directional declaration
28 F32Q Forward negative-sequence phase directional declaration
28 R32Q Reverse negative-sequence phase directional declaration
28 32QF Forward negative-sequence overcurrent directional declaration
28 32QR Reverse negative-sequence overcurrent directional declaration
28 32SPOF Forward open-pole directional declaration
28 32SPOR Reverse open-pole directional declaration
29 50QF Forward negative-sequence supervisory current element
29 50QR Reverse negative-sequence supervisory current element
29 50GF Forward zero-sequence supervisory current element
29 50GR Reverse zero-sequence supervisory current element
29 32QE 32Q internal enable
29 32QGE 32QG internal enable
29 32VE 32V internal enable
29 32IE 32I internal enable
30 F32I Forward current polarized zero-sequence directional element
30 R32I Reverse current polarized zero-sequence directional element
30 F32V Forward voltage polarized zero-sequence directional element
30 R32V Reverse voltage polarized zero-sequence directional element
30 F32QG Forward negative-sequence ground directional element
30 R32QG Reverse negative-sequence ground directional element
30 32GF Forward ground directional element
30 32GR Reverse ground directional element
Table 11.5 Relay Word Bits: Out-of-Step Elements (Sheet 2 of 2)
Row Name Description
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