GE N60 Instruction Manual page 422

GROUPED ELEMENTS
— This setting enables and disables the phase time overcurrent protection element.
FUNCTION
— Selects the signal source for the phase time overcurrent protection element.
SIGNAL SOURCE
— Selects how phase current input quantities are interpreted by the N60. Inputs can be selected as fundamental
INPUT
phasor magnitudes or total waveform RMS magnitudes as required by the application.
— Specifies the phase time overcurrent pickup level in per-unit values.
PICKUP
— Selects the time inverse overcurrent curve style.
CURVE
5
— Specifies a multiple of the base curve shape specified by the
TD MULTIPLIER
zero results in an instantaneous response to all current levels above pickup.
— The "Instantaneous" reset method is intended for applications with other relays, such as most static relays, which
RESET
set the energy capacity directly to zero when the current falls below the reset threshold. The "Timed" reset method can be
used where the relay must coordinate with electromechanical relays.
VOLTAGE RESTRAINT
— Assertion of the operand assigned to this setting blocks phase A of the phase time overcurrent element.
BLOCK A
— Enables and disables the logging of phase time overcurrent events in the sequence of events recorder.
EVENTS
5-228
Figure 5-118: Phase time overcurrent voltage restraint characteristic
— Enables and disables the phase time overcurrent voltage restraint feature.
N60 NETWORK STABILITY AND SYNCHROPHASOR MEASUREMENT SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS
setting. Programming this value to
CURVE