THOMSON TSC 900 User Manual

TSC 900 TRANSFER SWITCH CONTROLLER
PM 151 REV 5 16/04/19 Thomson Power Systems
94
5.13.13. 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.
5.13.14. 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.
5.13.15. OVER FREQUENCY DROPOUT
Set to the desired source over frequency dropout set point as expressed in percentage
of nominal system frequency. The dropout 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.
5.13.16. 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.
5.13.17. VOLTAGE SOURCE 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.
5.13.18. VOLTAGE SOURCE BLACKOUT DROPOUT
This set point is utilized for neutral delay bypass and transfer fail logic. Set to the desired
source voltage blackout dropout set point as expressed in percentage of nominal system
voltage. The dropout 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.
5.13.19. VOLTAGE SOURCE BLACKOUT PICKUP
This set point is utilized for neutral delay bypass and transfer fail logic. Set to the desired
source voltage blackout pick-up set point as expressed in percentage of nominal system
voltage. The pick-up set point is the value which the internal sensor energizes to a normal
state when all phases of the source voltage rises above the set point.

THOMSON TSC 900 Specifications

General

Brand	THOMSON
Model	TSC 900
Category	Controller
Language	English