I.L. 40-386.3
(10/94)
3-11
d.
The FDGT (FDOG trip delay timer) can be set from 0 to 15 cycles or block (BLK) as de-
sired. It is recommended to set to 3 cycles or longer. Refer to Section 3.9 for the detailed
FDGT information.
3.3.16 Distance/Overcurrent
Individual distance and overcurrent logic can be disabled, if required by the applica-
tion by setting the unit to
Disabled
:
a.
List of units which can be disabled:
Pilot Ø, Pilot G, Zone1 Ø, Zone1 G, Zone2 Ø, Zone2 G, Zone3 Ø, Zone3 G, Inst.
Ø, Inst. G
and
GB Type
.
b.
Procedure to disable the unit:
Switch REL 301/302 to the setting mode (see section 4.4.2.1), scrolling the func-
tion field to the desired function. Then set the unit to
Disabled
.
3.3.17 Timers
a.
T1 Timer can be set from 0-15 cycle delay if Zone1 trip delay is required.
b.
The T2Ø Type, T2G Type, T3Ø Time and/or T3G Time timer functions can be disabled, if
desired, by setting the timer to Blocked. Timers set to Blocked, block output from the as-
sociated trip logic. For example, if T3Ø Time is set to Blocked Zone3 logic cannot produce
a trip output.
3.3.18 Zone3 Direction Setting (Zone3)
Zone3 Ø and Zone3 G can be selected to be forward-looking or reverse-looking by set-
ting the
Zone3
(Zone3 forward or reverse setting) to
Forward Dir.
or
Reverse Dir.
3.3.19 Positive Sequence Impedance Line Angle (Ang Pos.)*
Set the Positive Sequence Line Impedance Angle setting
(Ang Pos.)
to the value of the
positive sequence line impedance angle. From the example data (Section 3.2), the set-
ting would be
Ang Pos. = 77
o
.
3.3.20 Zero Sequence Impedance Angle (Ang Zero)
*
Set the Zero Sequence Impedance Angle setting
(Ang Zero)
to the
value of the zero se-
quence line impedance angle. From the example data (Section 3.2), the setting would
be
Ang Zero = 73
o
.
3.3.21 Zero Sequence/Positive Sequence Ratio (Z
OL
/Z
1L
)*
Set the
(Z
OL
/Z
1L
)
Value based on the absolute value of the ratio of the line impedanc-
es. From the example data (Section 3.2), the setting would be
Z
OL
/Z
1L
= 3.3
.
3.3.22 Low Voltage Settings (Low V)
The low voltage units are used in close into fault logic and weakfeed logic in the REL
301/302.
Low V
should normally be set to 40 volts unless a higher setting is required
for more sensitive applications.
* See application note under Section 3.2.1
Summary of Contents for REL 301
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Page 17: ...I L 40 386 3 1 10 10 94 2682F39 Sheet 1 of 2 Sub 2 Figure 1 2 REL 301 302 Layout Vertical...
Page 18: ...I L 40 386 3 10 94 1 11 2682F39 Sheet 2 of 2 Sub 2 Figure 1 3 REL 301 302 Layout Horizontal...
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Page 62: ...I L 40 386 3 10 94 2 41 Figure 2 32 CO 2 Curve Characteristics 619596 Sub 2...
Page 63: ...I L 40 386 3 2 42 10 94 Figure 2 33 CO 5 Curve Characteristic 619597 Sub 2...
Page 64: ...I L 40 386 3 10 94 2 43 Figure 2 34 CO 6 Curve Characteristic 619598 Sub 2...
Page 65: ...I L 40 386 3 2 44 10 94 Figure 2 35 CO 7 Curve Characteristic 619599 Sub 2...
Page 66: ...I L 40 386 3 10 94 2 45 Figure 2 36 CO 8 Curve Characteristic 619600 Sub 2...
Page 67: ...I L 40 386 3 2 46 10 94 Figure 2 37 CO 9 Curve Characteristic 619601 Sub 2...
Page 68: ...I L 40 386 3 10 94 2 47 Figure 2 38 CO 11 Curve Characteristic 619602 Sub 2...
