Eaton ATC-100, Operation & Maintenance Manual

Page: 26 / 32

Instructional Booklet
Page 26 Effective: July 2010
ATC-100 Contactor Based Transfer Switch
For more information visit: www.eaton.com IB01602017E
Table 6. Utility - Generator Transfer Switch. Adjustable Features and Setpoints
See tables in the appendix for Voltage and Frequency Pickup and
Dropout settings.
Step 6: To change a setpoint (adjustable features), access the
rear of the controller and move the yellow jumpers to the
desired location.
Figure 21. ATC-100.
Step 7: Manually start the engine generator at the generator con-
troller. Check that the generator is running and the Gener-
ator Available amber LED is lit. If the LED is lit, shut down
the generator and place the Genset controller in the Auto-
operating position. If the LED is not lit, the setpoints
should be reviewed and the generator checked for proper
voltage and frequency output.
Step 8: Initiate a System Test from the front panel of the ATC-
100 (Figure 20). This may be done by pressing and hold-
ing the “Engine Start” and “Set Generator Test” buttons
simultaneously for 5 seconds.
The generator should start, the ATS should transfer and
run on the generator for the set test interval, then proceed
to a TDEN countdown and return to the utility. While the
ATS is connected to the Generator, use a voltmeter to
check for correct system voltage on the load terminals of
the ATS. Voltage measurements should be taken phase to
phase and phase to neutral. A load test will cause a
momentary power outage during transfer.
SETPOINT FIXED/
ADJUSTABLE
SETPOINT UNITS DESCRIPTION RANGE FACTORY DEFAULT
TDES Fixed Seconds Time Delay Engine Start 3 seconds 3 seconds
TDNE Fixed Seconds Time Delay Normal to Emergency 2 or15 seconds 15 seconds
TDEN Fixed Minutes Time Delay Emergency to Normal 5 minutes 5 minutes
TDEC Fixed Minutes Time Delay Engine Cool-off 1 minute 1 minute
NOM FREQ Jumper-selectable Hertz Nominal Frequency 50 or 60 Hz As ordered
NOM VOLTS Jumper-selectable Volts Nominal Voltage 120, 208, 220, 230, 240, 380,
and 480 volts
As ordered
S1 UV DROP Fixed Volts Utility Undervoltage Dropout 80% of NOMV 80% of NOMV in volts
S2 UV DROP Fixed Volts Generator Undervoltage Dropout 80% of NOMV 80% of NOMV in volts
S1 UV PICK Fixed Volts Utility Undervoltage Pickup 90% of NOMV 90% of NOMV in volts
S2 UV PICK Fixed Volts Generator Undervoltage Pickup 90% of NOMV 90% of NOMV in volts
S2 UF DROP Fixed Hertz Generator Underfrequency Dropout 90% of NOMF 90% of NOMF in hertz
S2 UF PICK Fixed Hertz Generator Underfrequency Pickup 95% of NOMF 95% of NOMF in hertz
S2 OF DROP Fixed Hertz Generator Overfrequency Dropout 115% of NOMF 115% of NOMF in hertz
S2 OF PICK Fixed Hertz Generator Overfrequency Pickup 110% of NOMF 110% of NOMF in hertz
Generator Test Jumper-selectable Generator Test Programming 7-DAY, 14-DAY or 28 DAY 7-DAY
TEST MODE Jumper-selectable Test Mode Off,
No Load,
Load
OFF
TER Fixed Minutes Engine run test time 15 minutes 15 minutes
PHASES Jumper-selectable 3-phase or single phase 1 or 3 AS ORDERED
TDEF Fixed Seconds Time Delay Emergency Fail Timer 6 seconds 6 seconds
TDN Jumper-selectable Seconds Time Delay Neutral Disabled (0 seconds) or
Enabled (2 seconds)
Enable (2 seconds)
Disabled (for 2-position contactor)
SYSTEM TEST
ENGINE
START
SET
GENERATOR
TEST
WARNING
THE GENERATOR SHOULD BE MANUALLY STARTED AND THE OUT-
PUT CHECKED AND VERIFIED BEFORE PROCEEDING TO STEP 7. IF
IMPROPER VOLTAGE/FREQUENCY IS APPLIED TO THE LOAD, THE
ATS MAY BE DAMAGED.