IB00405002E
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Instructional Booklet
Effective: August 2007
Page
7
O & M Manual for the CHGENLC Automatic
Transfer Switch with ATC-100 Control
2.
Time Delay on Engine Starting (TDES)
This feature provides a time delay of the signal to initiate the
engine/generator start cycle in order to override momentary
power outages or voltage fluctuations of Utility.
Fixed at 3 Seconds.
3.
Time Delay Emergency to Normal (TDEN)
This feature provides a time delay of the re-transfer opera-
tion to permit stabilization of Utility. Timing begins when the
Utility becomes available. If the Generator fails during tim-
ing, then re-transfer is immediate overriding the time delay.
Fixed at 5 Minutes.
4.
Time Delay for Engine Cool-down (TDEC)
This feature provides a time delay of the signal to initiate the
engine/generator stop cycle after the re-transfer operation.
This allows the engine/generator to cool down by running
unloaded. Timing begins on completion of the re-transfer
cycle.
Fixed at 5 Minutes
5.
Generator Monitoring and Protection
This feature provides monitoring and protection based on the
Generator voltage and/or frequency setpoints. All feature 5
functions are Failsafe operations.
5J. All Phase Undervoltage and Underfrequency Protection
Undervoltage:
Dropout: 80% of nominal
Pickup: 90% of nominal
Underfrequency:
Dropout: 90% of nominal
Pickup: 95% of nominal
5N.
All Phase Overfrequency
Overfrequency:
Dropout: 115% of nominal
Pickup: 110% of nominal
6.
Test Operators
Eaton ATSs are provided with a Test Pushbutton that simu-
lates a loss of the Utility power source as standard (Feature
6B). All programmed time delays (TDNE, TDEN, etc.) will be
performed as part of the Test. Engine run time of the Test is
equal to the Generator Test (Feature 23) programmed set-
point. All Tests are Failsafe protected.
6B. Test Pushbutton
Programmable setpoints include:
1. Load or No Load Testing, or Off
2. Engine run time equal to the Generator Test
(Feature 23) setting
7.
Time Delay Emergency Fail (TDEF)
This feature provides a time delay that prevents a connected
Generator power source from being declared “Failed” in order
to override momentary generator fluctuations. If the Genera-
tor power source remains in the failed state then, 0.5 sec-
onds after the TDEF timer expires, the transfer switch will
proceed with the programmed sequence for retransfer.
Fixed at 6 Seconds
12. Power Source Annunciation
This feature provides LEDs to give switch position and power
source availability indications.
Switch Position
Provides LEDs to indicate the switch position
12C. Utility - Source Connected
This feature provides a green LED that, when lit, indicates
the load is connected to the Utility.
12D. Generator - Source Connected
This feature provides a red LED that, when lit, indicates the
load is connected to Generator.
Power Source Availability
Provides LEDs to indicate if a power source is available.
LEDs may be integral or separate from the controller.
12G. Utility - Available
This feature provides a white LED that, when lit, indicates
the Utility is available.
12H. Generator - Available
This feature provides an amber LED that, when lit, indicates
the generator is available.
23.
Generator Test
This feature provides a means for automatic testing of the
engine generator set or standby power system. All pro-
grammed time delays will be performed during plant exer-
ciser operations.
23A. Generator Test Selectable – Off 7/14/28 Day Interval
This feature provides for automatic test operation of the
generator. Available test cycles are 7, 14, or 28 days with
a 15-minute duration.
Programmable setpoints allow for selection of three test
cycles:
•
Generator Start/Run Only (No Load);
•
Generator Test with Load Transfer; or
•
Disabled
This is a “Failsafe” operation.
26.
Utility - Monitoring and Protection
This feature provides Utility monitoring and protection func-
tions. If the Utility power supply fails, then the
ATC 100 will begin the sequence of operations necessary
to transfer the load circuit to the Generator power supply.
All Feature 26 monitoring and protection functions are Fail-
safe operations.
