Marathon TSC 900 - TSC 900 Wiring Pin Connections

TSC 900 TRANSFER SWITCH CONTROLLER
PM 151 REV 1 15/10/08 Thomson Power Systems
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5.12.12. UNDER FREQUENCY DROPOUT
Set to the desired source under frequency drop out set point as expressed in
percentage of nominal system frequency. The drop-out set point is the value which the
internal sensor de-energizes to an abnormal state when the source’s frequency falls
below the set point. An under frequency condition will be triggered following expiry of
the under frequency time delay setting
5.12.13. UNDER FREQUENCY PICKUP
Set to the desired source under frequency pick-up set point as expressed in
percentage of nominal system frequency. The pick-up set point is the value which the
internal sensor energizes to a normal state when the source’s frequency rises above
the set point.
5.12.14. OVER FREQUENCY DELAY (PICKUP)
Select the desired source over frequency time delay setting. The setting is entered in
seconds. If no delay is required, set this time delay to zero.
5.12.15. OVER FREQUENCY DROPOUT
Set to the desired source over frequency drop out set point as expressed in percentage
of nominal system frequency. The drop-out set point is the value which the internal
sensor de-energizes to a normal state when the source’s frequency falls below the set
point.
5.12.16. OVER FREQUENCY PICKUP
Set to the desired source over frequency pick-up set point as expressed in percentage
of nominal system frequency. The pick-up set point is the value which the internal
sensor energizes to an abnormal state when the source’s frequency rises above the
set point. An over frequency condition will be triggered following expiry of the over
frequency time delay setting.
5.12.17. SOURCE VOLTAGE BLACKOUT DELAY (DROPOUT)
Select the desired source voltage blackout time delay setting. The setting is entered in
seconds. If no delay is required, set this time delay to zero.
5.12.18. SOURCE VOLTAGE BLACKOUT DROPOUT
This set point is utilized for neutral delay bypass and transfer fail logic. Set to the
desired source voltage blackout drop out set point as expressed in percentage of
nominal system voltage. The drop-out set point is the value which the internal sensor
de-energizes to an abnormal state when any one phase of the source voltage falls
below the set point. A blackout voltage condition will be triggered following expiry of the
source voltage time delay setting.