GE Multilin 850, Instruction Manual

Page: 370 / 664

6–102 850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
VOLTAGE ELEMENTS CHAPTER 6: PROTECTION SETPOINTS
Figure 6-45: Logic Diagram of UV Reactive Power Protective Function (1 of 2)
WYE
VA
G
VBG VCG
SETPOINT
Configurable FUNCTION
:
Disabled
T
rip
SETPOINT
BLOCK
:
Of
f=
0
AND
Operate Output
Relay
1
(TRIP
)
LED
: T
rip
LED
: Alarm
AND
OR
LA
TCH
S R
RESET
Command
UV V
ar PKP
FLEXLOGIC OPERANDS
UV V
ar OP
SETPOINT
Output Relay X
Do Not Operate,
Operate
OR
Latched
Alarm
Alarm
Pwr
1
Reactive Actual V
alues
Reactive Power From Metering
\Power
1
(2
)
J
1
I_
1
Actual V
alues
Pos
. Seq
. Current
From Metering
\CT Bank
1 -J
1
PICKUP
VOL
T
AGE
:
SETPOINT
V
A
<
Pickup V
oltage
Curr Superv Level
:
SETPOINT
I1
≥
Current Sup
.Level
PICKUP
V
ARS
:
SETPOINT
|V
ars
| <
Pickup V
ars
when
V
ar Direction
=
Forward
|V
ars
| >
Pickup V
ars
when
V
ar Direction
=
Reverse
V
A
R DIRECTION
:
Pickup Delay
:
SETPOINT
t
PKP
t
DPO
Dropout Delay
:
V
oltage Mode
*:
SETPOINT
When MODE
=
Phase to Ground
,
VA
=
V
A
G
, VB
=
VBG
, VC
=
VCG
When MODE
=
Phase to Phase
V
A
=
V
AB
, VB
=
VBC
, VC
=
VCA
VB
<
Pickup V
oltage
VC
<
Pickup V
oltage
AND
VOL
T
AGE CONNECTION
AND AND
To sheet
2
of
2
DEL
T
A
VA
B
VBC VCA
3
-Ph V
oltages from VT Bank
1 -J
2
VOL
T
AGE CONNECTION
VA
= VA
B
, VB
=
VBC
, VC
=
VCA
* MODE setting is only applicable
when VT
Connection
=
Wye
1
2
VA VB VC
To sheet
2
of
2
To sheet
2
of
2
LED
: Pickup
SETPOINT
SIGNAL
INPUT
:
V
ars
=
Pwr
1
Reactive
when Signal Input
=
Power
1
V
ars
=
Pwr
2
Reactive
When Signal Input
=
Power
2
Pwr
2
Reactive
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