GE C70 Instruction Manual page 314

5.6 GROUPED ELEMENTS
c) PHASE OVERVOLTAGE (ANSI 59P, IEC PTOV)

PATH: SETTINGS GROUPED ELEMENTS
 PHASE
 OVERVOLTAGE1
There are three phase overvoltage elements available. A phase overvoltage element is used as an instantaneous element
5
with no intentional time delay or as a definite time element. The input voltage is the phase-to-phase voltage, either mea-
sured directly from delta-connected VTs or as calculated from phase-to-ground (wye) connected VTs. The specific voltages
to be used for each phase are shown below.
SETTING
PHASE OV1
FUNCTION:
Disabled = 0
Enabled = 1
SETTING
AND
PHASE OV1
BLOCK:
Off = 0
SETTING
PHASE OV1
SOURCE:
Source VT = Delta
VAB
VBC
VCA
Source VT = Wye
If the source VT is wye-connected, then the phase overvoltage pickup condition is
and V .
CA
NOTE
5-190

SETTING GROUP 1(6)
PHASE OV1
FUNCTION: Disabled
PHASE OV1 SIGNAL
MESSAGE
SOURCE: SRC 1
PHASE OV1
MESSAGE
PICKUP: 1.000 pu
PHASE OV1 PICKUP
MESSAGE
DELAY:
PHASE OV1 RESET
MESSAGE
DELAY:
PHASE OV1 BLOCK:
MESSAGE
Off
PHASE OV1
MESSAGE
TARGET: Self-reset
PHASE OV1
MESSAGE
EVENTS: Disabled
SETTING
PHASE OV1
PICKUP:
RUN
≥
VAB PICKUP
RUN
≥
VBC PICKUP
RUN
≥
VCA PICKUP
Figure 5–79: PHASE OVERVOLTAGE SCHEME LOGIC
C70 Capacitor Bank Protection and Control System

VOLTAGE ELEMENTS
Range: Disabled, Enabled
Range: SRC 1, SRC 2, SRC 3, SRC 4, SRC 5, SRC 6
Range: 0.000 to 3.000 pu in steps of 0.001
Range: 0.00 to 600.00 s in steps of 0.01
1.00 s
Range: 0.00 to 600.00 s in steps of 0.01
1.00 s
Range: FlexLogic Operand
Range: Self-reset, Latched, Disabled
Range: Disabled, Enabled
SETTINGS
PHASE OV1 PICKUP
DELAY:
PHASE OV1 RESET
DELAY:
t PKP
t RST
t PKP
t RST
t PKP
t RST
5 SETTINGS

PHASE OVERVOLTAGE1(3)
FLEXLOGIC OPERANDS
PHASE OV1 A PKP
PHASE OV1 A DPO
PHASE OV1 A OP
PHASE OV1 B PKP
PHASE OV1 B DPO
PHASE OV1 B OP
PHASE OV1 C PKP
PHASE OV1 C DPO
PHASE OV1 C OP
FLEXLOGIC OPERAND
PHASE OV1 OP
OR
FLEXLOGIC OPERAND
AND PHASE OV1 DPO
FLEXLOGIC OPERAND
OR PHASE OV1 PKP
827066A7.CDR
> ×
V 3 Pickup for V , V
AB
GE Multilin
,
BC