Schweitzer Engineering Laboratories SEL-751 - Table 4.23 Wattmetric Settings

4.54
SEL-751 Relay Instruction Manual Date Code 20170927
Protection and Logic Functions
Group Settings (SET Command)
The directional control for overcurrent elements is enabled by making direc-
tional control enable setting EDIR. Setting EDIR has setting choices:
➤ Y enable directional control
➤ N disable directional control
➤ AUTO enable directional control and set many of the
directional element settings automatically
If directional control enable setting EDIR := N, directional control is disabled
and no directional control settings are made. All level direction settings are set
internally as:
FWD DIR NSEQ LVL 0.25–5.00 A
b
50QFP := 0.50
b
REV DIR NSEQ LVL 0.25–5.00 A
b
50QRP := 0.25
b
I1 RST FAC I2/I1 0.02–0.50 a2 := 0.10
I0 RST FAC I2/I0 0.10–1.20 k2
:= 0.20
FWD DIR RES LVL 0.05–5.00 A
b
50GFP := 0.50
b
REV DIR RES LVL 0.05–5.00 A
b
50GRP := 0.25
b
RES FACTOR IG/IN OFF, 0.001–0.100 KGN := OFF
MAX TRQ ANG 0.00–85.00 deg INMTA := 0.00
I1 RST FAC I0/I1 0.001–0.50 a0 := 0.10
FWD DIR Z0 LVL –128.00 to 128.00 ohm
c
Z0F := 3.20
REV DIR Z0 LVL –128.00 to 128.00 ohm
c
Z0R := 3.4
ZRO SQ MX TQ ANG –90.00 to –5.00 deg and +5.00 to
+90.00 deg
Z0MTA := 72.47
FWD DIR LVL 0.005-5.000 A
d
50NFP := 0.010
REV DIR LVL 0.005-5.000 A
d
50NRP := 0.005
RES FACTOR 0.001–0.500 a0n := 0.001
ENABLE V0 IN DIR SEL
OGIC EDIRIV := 1
a
Refer to Table 4.21 and Table SET.2 on page SET.6 of the SEL-751 Settings Sheets for the
availability of different ORDER setting options based on voltage connection and nominal
rating neutral CT.
b
Setting ranges and default values shown are for 5 A nominal CT rating.
Divide by 5 for 1 A CTs.
c
Setting ranges and default values shown are for 5 A nominal CT rating.
Multiply by 5 for 1 A CTs.
d
Setting ranges are for 0.2 A nominal neutral CT.
Table 4.23 Wattmetric Settings
Setting Prompt Setting Range
Setting Name :=
Fac to ry Defa ult
3V0 59 PICKUP 1–430 V 59RES := 22
FWD WATT PICKUP 0.001–150 W DIRWFP := 0.5
REV WATT PICKUP 0.001–150 W DIRWRP := 0.5
WATTMETRIC DLY 0.0–18000.0 sec DIRWD := 0.5
Table 4.22 Directional Control Settings (Sheet 2 of 2)
Setting Prompt Setting Range
Setting Name :=
Factory Default