4.186
SEL-700G Relay
Instruction Manual
Date Code 20170814
Protection and Logic Functions
Other Settings
Figure 4.125
Pole Open Logic Diagram, Breaker 52Y
Set 50LmP (m = X or Y) to its minimum value. When the breaker current is
extremely low, the relay relies on the 52Am input status to indicate breaker
position. Set 3POmD := 0 cycles, unless your application requires a specific
time-delayed dropout.
Trip/Close Logic
Settings
The trip logic and close logic for the SEL-700G operate in a similar manner.
Each has a SEL
OGIC
control equation setting to set or latch the logic and
another SEL
OGIC
control equation setting to reset or unlatch the logic. Each
also has other elements or functions that unlatch the logic. The output of each
logic is a Relay Word bit that can be assigned to operate output contacts or to
operate in any other manner for which you can use a Relay Word bit. The
specifics of each type of logic are discussed below.
NOTE:
The factory-default
assignment of the Relay Word bit TRIP
is the output
OUT103
. See Table 4.61 for
the output contacts settings.
3POYD
0
Relay
Word
Bits
Setting
52AY
3POY
| IAY |
| ICY |
| IBY |
50LY
50LYP
Relay
Word
Bits
Table 4.53
Trip/Close Logic Settings
a
(Sheet 1 of 2)
Setting Prompt
Setting Range
Setting Name := Factory Default
MIN TRIP TIME
0.0–400.0 sec
TDURD := 0.5
CLOSE m FAIL DLY
0.0–400.0 sec
CFD
m
:= 0.5
X-SIDE BRKR TRIP EQN
SV
TRX := SV06 OR SV07 OR SV08
OR 46Q2T OR 81X1T OR 81X2T
OR 81RX1T OR 81RX2T OR
OOST OR SV04T OR OCX
b
X-SIDE BRKR TRIP EQN
SV
TRX := SV06 OR SV07 OR SV08
OR 46Q2T OR 81X1T OR 81X2T
OR 81RX1T OR 81RX2T OR NOT
LT02 AND SV04T OR OCX
c
X-SIDE BRKR TRIP EQN
SV
TRX := SV06 OR SV07 OR NOT
LT02 AND SV04T OR OCX
d
GEN FIELD BRKR TRIP EQN
SV
TR1 := SV06 OR SV07 OR SV08
PRIME MOVER TRIP EQN
SV
GEN LOCKOUT TRIP EQN
SV
TR3 := SV06 OR SV07
Y-SIDE BRKR TRIP EQN
SV
TRY := SV09 OR SV10 OR LT02
AND SV04T OR OCY
e
REMOTE TRIP EQN
SV
REMTRIP := 0
UNLATCH
m
-SIDE TRIP
SV
ULTR
m
:= 3POm
UNLATCH TRIP 1
SV
ULTR1 := NOT TR1
UNLATCH TRIP 2
SV
ULTR2 := NOT TR2
Summary of Contents for SEL-700G Series
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