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IB01602078E
Instruction Booklet
Page
34
Effective: September 2011
40-400A (480/600Vac) ATC-300+ 3-Postion
Contactor Based Transfer Switch
Step 7:
To change or add a setpoint, select
Yes
when the
“Change Setpoints” message appears on the screen.
Use the
<Step/Enter>
pushbutton to step through the
setpoints.
Use the
<Increase>
and
<Decrease>
pushbuttons to
change the setpoint.
When finished scrolling through and changing the desired
setpoints, answer
Yes
when the “Save Setpoints?” ques-
tion appears on the screen. The display will return to the
default screen.
ATC-300
se
se
Source 1
Source 2
Available
Available
Connected
Connected
Load
Unit Status
Alarm
Reset
Engine
Test
Lamp
Test
Help
Step
Enter
Bypass
TDNE / TDEN
ALARM RESET
DECREASE
ENTER
INCREASE
STEP
BYPASS
TDNE/TDEN
LAMP TEST
ENGINE
TEST
HELP
Figure 26. ATC-300+ Pushbuttons.
WARNING
THE GENERATOR SHOULD BE MANUALLY STARTED AND THE
OUTPUT CHECKED AND VERIFIED BEFORE PROCEEDING TO STEP
8. IF IMPROPER VOLTAGE/FREQUENCY IS APPLIED TO THE LOAD,
THE ATS MAY BE DAMAGED.
Step 8:
Manually start the engine generator at the generator con-
troller. Check that the generator is running and the
Source 2 Available
amber LED is lit. Press the
<Step/
Enter>
pushbutton, step through the phase voltages,
frequency, and message display. If the source message
indicates that the source is Good, shut down the genera-
tor and place the Genset controller in the Auto-operating
position. If the message indicates a problem with the
source, the setpoints should be reviewed and the genera-
tor checked for proper voltage and frequency output.
Step 9:
Initiate a Load Test from the front panel of the ATC-
300+ (Figure 28). This may be done by setting the
engine test setpoint to:
1 Load Test
then saving the setpoints. Once the engine test setpoint
has been changed and saved, press the
<Engine Test>
pushbutton twice. 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 Source 1. While the ATS is connected to Source 2,
use a voltmeter to check for correct system voltage on
the load terminals of the ATS. Check all phases on a 3-
phase system. Voltage measurements should be taken
phase to phase and phase to neutral. A load test will
cause a momentary power outage during transfer.
