Frequency - GE PQMII Instruction Manual

5.5.3

Frequency

FREQUENCY
5–40
• AVERAGE VOLTAGE THD DELAY: If the average voltage THD equals or exceeds the
AVERAGE VOLTAGE THD LEVEL
in this setpoint, an Average Voltage THD condition will occur.
PATH: SETPOINTS S4 ALARMS/CONTROL
[ ] UNDERFREQUENCY
RELAY: OFF
UNDERFREQUENCY
MESSAGE
LEVEL ≤
UNDERFREQUENCY
MESSAGE
DELAY:
UNDERFREQUENCY WHEN
MESSAGE
FREQUENCY=0 Hz: NO
OVERFREQUENCY
MESSAGE
RELAY: OFF
OVERFREQUENCY
MESSAGE
LEVEL ≥
OVERFREQUENCY
MESSAGE
DELAY:
• UNDERFREQUENCY RELAY: Underfrequency detection can either be disabled or used
as an alarm, or process control. Set this setpoint to "Off" if the feature is not required.
Selecting alarm relay will cause the alarm relay to activate and display an alarm
message whenever an underfrequency condition exists. Selecting an auxiliary relay
activates the auxiliary relay for an underfrequency condition, but no message will be
displayed. This is intended for process control.
• UNDERFREQUENCY LEVEL: When the measured frequency drops to or below the level
set by this setpoint, an underfrequency condition will occur.
• UNDERFREQUENCY DELAY: If the underfrequency drops to or below the
UNDERFREQUENCY LEVEL
underfrequency condition will occur.
• UNDERFREQUENCY WHEN FREQ=0 Hz: A voltage greater than 20 V is required on
phase AN (AB) voltage input before frequency can be measured. If no voltage is
applied or if the voltage applied is less than 20 V, the displayed frequency will be 0 Hz.
If "No" is selected in this setpoint, an underfrequency condition will not occur when
the displayed frequency is 0 Hz.
• OVERFREQUENCY RELAY: Overfrequency detection can either be disabled, used as an
alarm or as a process control. Set this setpoint to off if the feature is not required.
Selecting alarm relay will cause the alarm relay to activate and display an alarm
message whenever an overfrequency condition exists. Selecting auxiliary relay will
cause the auxiliary relay to activate for an overfrequency condition, but no message
will be displayed. This is intended for process control.
• OVERFREQUENCY LEVEL: When the measured frequency equals or exceeds the level
set by this setpoint, an overfrequency condition will occur.
value and remains this way for the time delay programmed
FREQUENCY
40.00 Hz
1.0 s
70.00 Hz
1.0 s
value for the time delay programmed in this setpoint, an
PQMII POWER QUALITY METER – INSTRUCTION MANUAL
CHAPTER 5: SETPOINTS
Range: Alarm, Aux1, Aux2, Aux3, Off
Range: 20.00 to 70.00 Hz in steps of
0.01
Range: 0.1 to 10.0 s in steps of 0.1
Range: Yes, No
Range: Alarm, Aux1, Aux2, Aux3, Off
Range: 20.00 to 125.00 Hz in steps of
0.01
Range: 0.1 to 10.0 s in steps of 0.1