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THOMSON TSC 900 User Manual

THOMSON TSC 900
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TSC 900 TRANSFER SWITCH CONTROLLER
PM 151 REV 5 16/04/19 Thomson Power Systems
89
5.12.11. GEN (SRC 2) FAILED TO START DELAY
The TSC 900 controller monitors the status of the Generator voltage and frequency when
the Engine Start output is activated. If the Generator voltage does not reach rated voltage
& frequency within a pre-set time delay after the engine start out is activated, the GEN
FAIL TO START alarm will be activated. Select desired time in seconds.
5.12.12. DISCONNECTION RESUME TIME
When the TSC 900 is signaled to return to an Automatic mode of operation, it will
suspend any actions for the time setting of the DISCONNECTION RESUME timer to
allow for operation states, alarms etc., to resume normal operation. This timer will be
factory set for the specific ATS mechanism type.
5.12.13. TRIP RETRY ON/OFF PULSE TIME (SRC1&2)
The Trip Retry On/Off Pulse Time feature is utilized for ATS mechanisms which contain
separate open and close coils to operate the power switching devices. When a power
switching device fails to trip open for any reason, the TSC 900 will attempt to re-open it
by providing an on/off pulse signal. The duration of the on/off pulse signal is set by the
Trip Retry On/Off Pulse Time setting. The Trip Retry On/Off Pulse Time will be factory
set for 100 milliseconds. Note: The duration of each on and off pulse signal is
symmetrical (e.g. a Pulse time setting of 100 milliseconds will provide a 100 millisecond
“on” pulse and 100 milliseconds off” pulse. One Trip Retry ON/OFF pulse timer is
provided for each source (i.e. Source 1 (Utility) and Source 2 (Gen) power switching
devices.
5.12.14. TRIP RETRY DURATION TIMER (SRC1&2)
The “Trip Retry Duration Timer is utilized for ATS mechanisms which contain separate
open and close coils to operate the power switching devices. When a power switching
device fails to open for any reason, the TSC 900 will attempt to re-open it by providing
an on/off pulse signal. If a retry is unsuccessful, the TSC 900 will continue retrying until
expiry of the Trip Retry Duration Timer. The Trip Retry Duration Timer will be factory set
to allow 3 retry attempt cycles to occur. Based on a Retry Pulse timer setting of 100
milliseconds a Trip Retry Duration Timer is set for 600 milliseconds (i.e. (100 milliseconds
On pulse + 100 milliseconds Off pulse) x 3 cycles). One Trip Retry Duration Timer is
provided for each source (i.e. Source 1 (Utility) and Source 2 (Gen) power switching
devices. These timers will be factory set for the specific ATS mechanism type.
5.12.15. CLOSE RETRY ON/OFF PULSE TIME (SRC1&2)
The Close Retry On/Off Pulse Time” feature is utilized for ATS mechanisms which
contain separate open and close coils to operate the power switching devices. When a

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THOMSON TSC 900 Specifications

General IconGeneral
BrandTHOMSON
ModelTSC 900
CategoryController
LanguageEnglish

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