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IIB01602019E
Instructional Booklet
Page
4
Effective: March 2010
O&M Manual for the Eaton ATC-100
Automatic Transfer Switch Controller
5. Generator Monitoring and Protection
This feature provides monitoring and protection based on the
generator voltage and/or frequency set points. All Feature
5 functions are “failsafe” operations.
5B. Single Phase Undervoltage and Underfrequency Protection
Undervoltage:
Dropout: 80% of nominal
Pickup: 90% of nominal
Underfrequency:
Dropout: 90% of nominal
Pickup: 95% of nominal
5C. 1-Phase Overfrequency
Overfrequency:
Dropout: 115% of nominal
Pickup: 110% of nominal
5N. All Phase Overfrequency
Overfrequency:
Dropout: 115% of nominal
Pickup: 110% of nominal
5J. 3-Phase Undervoltage and Underfrequency Protection
Undervoltage:
Dropout: 80% of nominal
Pickup: 90% of nominal
Underfrequency:
Dropout: 90% of nominal
Pickup: 95% of nominal
6.
Test Operators
Eaton automatic transfer switch controllers are provided with
a “System Test” pushbutton.
6B. System Test Pushbutton
The System Test pushbutton will start the generator, transfer
the load to the generator source, run on generator for a run
time of 15 minutes, and then re-transfer back to the utility
source. All programmed time delays (TDNE, TDEN, etc.) will
be performed as part of the System Test. The System Test
is failsafe protected.
7.
Time Delay Emergency Fail (TDEF)
This feature provides a time delay that prevents a connected
emergency source from being declared “failed” in order to
override momentary generator fluctuations. If the generator
power source remains in the failed state then, 0.5 seconds
after the TDEF timer expires, the transfer switch will proceed
with the programmed sequence for re-transfer.
Fixed setting of six seconds
12. Power Source Annunciation
This feature provides LED’s to indicate switch position and
power source availability indications.
Switch Position
Provides LED’s to indicate the transfer switch position.
12C.Utility - Source Connected
This feature provides a green LED that, when lit, indicates
that the load is connected to the utility source.
12D.Generator - Source Connected
This feature provides a red LED that, when lit, indicates the
load is connected to the generator source.
Power Source Availability
Provides LED’s to indicate if a power source is available.
LED’s may be integral or separate from the controller.
12G.Utility - Available
This feature provides a white LED that, when lit, indicates
that the utility source is available.
12H.Generator - Available
This feature provides an amber LED that, when lit, indicates
that the generator source 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 generator test
operations.
23A.Generator Test Selectable – Off / 7 / 14 / 28 Day Interval
(Jumper Selectable Only)
This feature provides for automatic test operation of the gen-
erator. Available test cycles are 7, 14, or 28 days with a
15-minute duration.
Programmable jumpers 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 source fails, then the ATC-100 will
begin the sequence of operations necessary to transfer the
load circuit to the generator power source. All Feature 26
monitoring and protection functions are “failsafe” operations.
26P.All Phase Undervoltage Protection
This feature provides all phase undervoltage monitoring and
protection.
Undervoltage:
Dropout: 80% of nominal
Pickup: 90% of nominal
