GE 469 Instruction Manual page 154

5–10
• DISPLAY UPDATE INTERVAL: Sets the duration for which the metered current and
voltage readings are averaged before being displayed. It does not affect relay
protection or function timing in any way. It can be used to steady the display when
readings are bouncing.
• MOTOR LOAD FILTER INTERVAL: This value (when non-zero) averages current and
power factor for the programmed number of cycles using a running average
technique. This settings is intended for use on synchronous motors running at low
RPM and driving reciprocating loads. The number of cycles to average can be
determined by using current waveform capture. The number of cycles to complete
one stroke can be determined from this waveform. This value can be used as the
starting point for the motor load filter interval. Additional fine tuning may be required.
This settings is not seen if
When set greater than one cycle, Motor Load Filter Interval may increase trip/alarm
times for the following protection elements. No other elements are affected. Trip/
alarm times increase 16.7 ms for each additional cycle in the filter interval.
• Acceleration Timer
• Current Unbalance
• Mechanical Jam
• Overload
• Stall
• Thermal Model
• Reduced Voltage Start
• Undercurrent
• Demand
• Power Factor
• Three-Phase Apparent Power
• Three-Phase Reactive Power
• Three-Phase Real Power
• Under Power
• Reverse Power
NOMINAL SYSTEM FREQUENCY
469 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS
is "Variable".