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⎯ 45 ⎯
6 F 2 S 0 8 5 7
Setting
The following shows the setting elements for the frequency protection and their setting ranges.
Element Range Step Default Remarks
81-1 (L1, H1)
45.00 − 55.00Hz
(54.00 − 66.00Hz
0.01Hz
0.01Hz
49.00Hz
59.00Hz) (*)
Trip
81-2 (L2, H2)
45.00 − 55.00Hz
(54.00 − 66.00Hz
0.01Hz
0.01Hz
48.00Hz
58.00Hz)
Alarms
UV
40 − 100V
1V 40V Undervoltage block
TFRQL
0.00 − 60.00s
0.01s 10.00s Underfrequency trip time
delay
TFRQH
0.00 − 60.00s
0.01s 10.00s Overfrequency trip time
delay
TFRQA
0.00 − 60.00s
0.01s 10.00s Alarm time delay
Scheme switch
[FRQ-UF1]
[FRQ-UF2]
[FRQ1] to [FRQ5]
[FRQA]
Off/On
Off/On
Off/On
Off/On
On
On
(**)
On
Enable or disable
Trip
Alarm
Trip
Alarm
(*) : Frequency values shown in parentheses are for the case of 60Hz rating. Other frequency values
are shown for the case of 50Hz rating.
(**): Default settings are dependent on the models. See Appendix H.