Voltage - GE 750 Instruction Manual

750/760
Feeder Management Relay

Voltage

VOLTAGE
5–64
FIGURE 5–26: Negative Sequence Voltage Logic
a) Main Menu
PATH: SETPOINTS S5 PROTECTION
[ ]
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
There are four undervoltage protection elements which can be used for a variety of
applications:
• Undervoltage Protection: For voltage sensitive loads, such as induction
motors, a drop in voltage will result in an increase in the drawn current, which
may cause dangerous overheating in the motor. The undervoltage protection
feature can be used to either cause a trip or generate an alarm when the
voltage drops below a specified voltage setting for a specified time delay.
• Permissive Functions: The undervoltage feature may be used to block the
functioning of external devices by operating an output relay, when the voltage
falls below the specified voltage setting. Note that all internal features that are
inhibited by an undervoltage
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VOLTAGE
BUS [ ]
See page 5–65.
UNDERVOLTAGE 1
BUS [ ]
See page 5–65.
UNDERVOLTAGE 2
LINE [ ]
See page 5–66.
UNDERVOLTAGE 3
LINE [ ]
See page 5–66.
UNDERVOLTAGE 4
OVERVOLTAGE 1 [ ]
See page 5–67.
OVERVOLTAGE 2 [ ]
See page 5–67.
NEUTRAL [ ]
See page 5–68.
DISPLACEMENT
condition, such
S5 Protection
as underfrequency and
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