5.12. DELAY SETTINGS
The TSC 900 provides the following programmable time delay features:
5.12.1. UTILITY (SRC 1) RETURN DELAY
The utility return delay period will be initiated once the utility supply has returned within
limits following a utility power failure condition. Select desired utility return delay time in
seconds. If no delay is required, set this time delay to zero. The utility return delay will
be bypassed should the generator fail during the time delay period.
Note: This time delay setting is only applicable for Standard/Service Entrance rated ATS
with a Utility and Generator source connected. For ATS ordered with the Dual Source
Option, refer to timer labeled as “RETURN TO PREFERRED SOURCE DELAY” per
Section 5.12.19.
5.12.2. GEN (SRC 2) COOL DOWN DELAY
The generator (i.e. engine) cool down period will be initiated once the load has
transferred from the generator supply. The engine start signal will be maintained until
expiry of the cool down delay timer. Select desired generator cool down delay time in
seconds. If no delay is required, set this time delay to zero. Cool down time is posted
in 1-second decrements when active.
5.12.3. GEN (SRC 2) START DELAY
If the utility source power fails and its transient delay timers expire (e.g. 1 second UV,
UF timers etc.), the "GEN START Delay" timer will start timing. Once it expires, the
engine start output contact will close and the Generator will transfer on load once its
Warm-up delay has expired. If a Generator was started and was running for longer than
its Warm-up Timer setting, it will wait for the GEN START delay timer to time out before
it transfers on load following the Utility source power failure. Select desired generator
start delay time in seconds. If no delay is required, set this time delay to zero. The
engine start output relay is normally energized when the utility power is within limits and
de-energizes to start the generator.
Note: This time delay setting is only applicable for Standard/Service Entrance rated ATS
with a Utility and Generator source connected. For ATS ordered with the Dual Source
Option, refer to timer labeled as “TRANSFER FROM PREFERRED SOURCE
DELAY” per Section 5.12.21.
5.12.4. GEN (SRC 2) WARM UP DELAY
A transfer to the generator supply will be initiated when the voltage and frequency are
within limits and upon expiry of the warm-up delay timer. Select desired generator warm-
up delay time in seconds. If no delay is required, set this time delay to zero.
To Next Page
Loading...
