Siemens Sentron SB TP01 Series User Manual

Extended Protective Relaying
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7.9 Over Frequency
The trip unit can alarm or trip on the frequency of the monitored
power by setting the parameters from the Over Frequency
selection of the Protective Relays Menu . To alarm, or to trip
and alarm, on over frequency:
1. From the Protective Relays Menu , select Over Fre-
quency . The Alarm checkbox is highlighted, but alarming
has not yet been set.
2. To enable alarming, press the Up Arrow key, then press
Enter . If you have enabled alarming, a checkmark
appears and the pickup settings are highlighted.
3. Select a pickup value by pressing the Up or Down
Arrow keys until the value is at the desired level. The possi-
ble pickup values are 1, 2, 3, 4, 5, 7, 9, 12 Hz above the
nominal frequency. Press Enter .
4. Then select a delay time by pressing the Up or Down
Arrow keys until the value is at the desired level. Possible
time delay settings are 1, 2, 3, 4, 5, 7, 10 and 15 seconds.
Press Enter .
7.10 Under Frequency
The trip unit can alarm or trip on the frequency of the monitored
power by setting the parameters from the Under Frequency
selection of the Protective Relays Menu . To alarm, or to trip
and alarm, on under frequency:
1. From the Protective Relays Menu , select Under Fre-
quency . The Alarm checkbox is highlighted, but alarming
has not yet been set.
2. To enable alarming, press the Up Arrow key, then press
Enter . If you have enabled alarming, a checkmark
appears and the pickup settings are highlighted.
3. Select a pickup value by pressing the Up or Down
Arrow keys until the value is at the desired level. The pos-
sible pickup values are 1, 2, 3, 4, 5, 7, 9, 12 Hz below the
nominal frequency. Press Enter .
4. Then select a delay time by pressing the Up or Down
Arrow keys until the value is at the desired level. Possi-
ble time delay settings are 1, 2, 3, 4, 5, 7, 10 and 15 sec-
onds. Press Enter .
If you want to
enable...
Then...
alarming only follow steps 2–4 and press Escape
. Then press Enter at the verifi-
cation screen.
alarming and tripping follow steps 2–4, press Enter to
highlight the Trip checkbox, then
repeat the process you used in
steps 2–4 to set pickup and delay
values. After setting both the alarm
and trip values, press Escape .
Then press Enter at the verifica-
tion screen.
If you want to
enable...
Then...
alarming only follow steps 2–4 and press Escape
. Then press Enter at the verifi-
cation screen.
alarming and tripping follow steps 2–4, press Enter to
highlight the Trip checkbox, then
repeat the process you used in
steps 2–4 to set pickup and delay
values. After setting both the alarm
and trip values, press Escape .
Then press Enter at the verifica-
tion screen.

Siemens Sentron SB TP01 Series Specifications

General

Brand	Siemens
Model	Sentron SB TP01 Series
Category	Circuit breakers
Language	English