GE M60 Instruction Manual page 354

GROUPED ELEMENTS
There are three phase overvoltage elements available. A phase overvoltage element is used as an instantaneous element
with no intentional time delay or as a definite time element. The input voltage is the phase-to-phase voltage, either
measured directly from delta-connected VTs or as calculated from phase-to-ground (wye) connected VTs. The figure
shows specific voltages to be used for each phase.
SETTING
PHASE OV1
FUNCTION:
Disabled = 0
Enabled = 1
SETTING
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
5
and V
CA
NOTE
5.7.10.4 Neutral overvoltage (ANSI 59N, IEC PTOV)
SETTINGS  GROUPED ELEMENTS  SETTING GROUP 1(6)  VOLTAGE ELEMENTS  NEUTRAL OV1(3)
 NEUTRAL OV1

5-226
Figure 5-123: Phase overvoltage logic
SETTING
PHASE OV1
PICKUP:
RUN
VAB PICKUP ≥
AND
RUN
VBC ≥ PICKUP
RUN
VCA PICKUP ≥
.
NEUTRAL OV1

FUNCTION: Disabled
NEUTRAL OV1 SIGNAL

SOURCE: SRC 1
NEUTRAL OV1 PICKUP:

0.300 pu
NEUTRAL OV1 CURVE:

Definite time
NEUTRAL OV1 PICKUP:

DELAY: 1.00 s
NEUTRAL OV1 RESET:

DELAY: 1.00 s
NEUTRAL OV1 BLOCK:

Off
NEUTRAL OV1 TARGET:

Self-reset
NEUTRAL OV1 EVENTS:

Disabled
SETTINGS
PHASE OV1 PICKUP
DELAY:
PHASE OV1 RESET
DELAY:
t PKP
t RST
t PKP
t RST
t PKP
t RST
Range: Disabled, Enabled
Range: SRC 1, SRC 2, SRC 3, SRC 4
Range: 0.000 to 3.000 pu in steps of 0.001
Range: Definite time, FlexCurve A, FlexCurve B,
FlexCurve C
Range: 0.00 to 600.00 s in steps of 0.01
Range: 0.00 to 600.00 s in steps of 0.01
Range: FlexLogic operand
Range: Self-reset, Latched, Disabled
Range: Disabled, Enabled
M60 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS
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
OR PHASE OV1 OP
FLEXLOGIC OPERAND
PHASE OV1 DPO
AND
FLEXLOGIC OPERAND
OR PHASE OV1 PKP
827066A7.CDR
 for V , V ,
V > 3 Pickup
AB BC