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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
IB01602078E
For more information visit: www.genarac.com
Instruction Booklet
Effective: September 2011
Page
35
40-400A (480/600Vac) ATC-300+ 3-Postion
Contactor Based Transfer Switch
Figure 27. ATC-300+ Logic.
Step 10:
ATC3 Controlled ATS Power Failure Test - Initiate a
Load Test by simulating an actual power failure.
1. This should be done by opening the upstream
breaker or fused disconnect switch.
2. The generator should start and the ATS should
transfer to Source 2.
3. After transfer, close the upstream breaker, or close
the Source 1 Control Circuit Fused Disconnect. The
TDEN timer should begin counting, and, when com-
plete, the ATS should transfer to Source 1. The
TDEC should time out and shut the Source 2 power
unit down.
NOTICE
WHILE PERFORMING TESTING, IF AN UNDESIRED OR UNDOCU-
MENTED RESULT OCCURS, CONTACT YOUR GENERAC REPRESEN-
TATIVE.