Appendix B -Settings and Signals
MENU TEXT COL ROW DEFAULT SETTING AVAILABLE OPTIONS
DESCRIPTION
Setting to enable or disable the first stage overfrequency element.
F>1 Setting 43 11 50.5
From 45 to 65 in steps of 0.01
[Courier Number (frequency)]
Setting that determines the pick-up threshold for the first stage overfrequency element.
F>1 Time Delay 43 12 2
From 0 to 100 in steps of 0.01
[Courier Number (time-seconds)]
Setting that determines the minimum operating time-delay for the first stage overfrequency element.
F>2 Status 43 13 Disabled
Enabled
Setting to enable or disable the second stage overfrequency element.
F>2 Setting 43 14 51
From 45 to 65 in steps of 0.01
[Courier Number (frequency)]
Setting that determines the pick-up threshold for the second stage overfrequency element.
F>2 Time Delay 43 15 1
From 0 to 100 in steps of 0.01
[Courier Number (time-seconds)]
Setting that determines the minimum operating time-delay for the second stage overfrequency element.
GROUP 1: DF/DT
PROTECTION
44 00
This column contains settings for rate of change of Frequency
df/dt Avg.Cycles 44 01 6
6 or 12
[Unsigned Integer (16 bits)]
This setting is available for calculating the rate of change of frequency measurement over a fixed period of either 6 or 12 cycles.
df/dt>1 Status 44 04 Enabled
Enabled
Setting to enable or disable the first stage df/dt element.
df/dt>1 Setting 44 05 2
From 0.1 to 10 in steps of 0.1
[Courier Number (Hz/sec)]
Pick-up setting for the first stage df/dt element.
df/dt>1 Dir'n 44 06 Negative
Positive
Both
This setting determines whether the element will react to rising or falling frequency conditions respectively, with an incorrect setting being
indicated if the threshold is set to zero.
df/dt>1 Time 44 07 0.5
From 0 to 100 in steps of 0.01
[Courier Number (time-seconds)]
Minimum operating time-delay setting for the first stage df/dt element.
df/dt>2 Status 44 0B Enabled
Enabled
Setting to enable or disable the second stage df/dt element.
df/dt>2 Setting 44 0C 2
From 0.1 to 10 in steps of 0.1
[Courier Number (Hz/sec)]
Pick-up setting for the second stage df/dt element.
df/dt>2 Dir'n 44 0D Negative
Positive
Both
[Indexed String]
This setting determines whether the element will react to rising or falling frequency conditions respectively, with an incorrect setting being
indicated if the threshold is set to zero.
df/dt>2 Time 44 0E 1
From 0 to 100 in steps of 0.01
[Courier Number (time-seconds)]
Minimum operating time-delay setting for the second stage df/dt element.
df/dt>3 Status 44 12 Enabled
Enabled
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