IB01602017E
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Instructional Booklet
Effective: July 2010
Page
15
ATC-100 Contactor Based Transfer Switch
Section 5: Operation
5.1 General
An ATS provides a power contactor to connect and disconnect
the load to and from the Utility and the Generator power sources
(Section 3.2.1).
5.2 Manual Operation
To manually operate:
1. Disconnect all sources of power.
2. Disconnect the J7 connector from the ATC-100 controller.
3. Depress the “trip” button on the contactor.
4. Locate the manual lever on the left side of the contactor.
5. Locate the yellow handle used to manually transfer the
switch.
6. Attach the yellow handle to the manual lever.
7. Move the lever up to go to Utility or move the lever up to go
to the Generator.
Figure 13. ATS Manual Operating Handle in Use.
8. Once the manual operation is complete and automatic opera-
tion is desired, connect the sources of power.
9. Check for 120 Vac at the J7 plug across the Utility - Utility
inputs if Utility is available.
10. Check for 120 Vac at the J7 plug across the Generator - Gen-
erator inputs if the Generator is available. See the Trouble-
shooting Guide (Table 3, Section 5 of ATC-100 Controller
Instruction Booklet IB01602019E) if values are above 130
Vac or below 110 Vac.
11. Insert the J7 connector into the controller.
12. Follow the testing procedure in Section 6 to ensure proper
automatic operation.
5.3 Automatic Transfer
The operating sequence of an ATS is dictated by the switch's
standard features and selected options. Operation of an ATS dur-
ing Utility power source failure and Utility power source restora-
tion will be described here with only standard options included on
the switch. Additional options, as described in Section 3, can
change sequences and timing, depending upon the options
selected. It is strongly suggested that you become familiar with
additional options selected with the particular ATS and their
effect on the normal operation of an ATS.
WARNING
DO NOT ATTEMPT TO MANUALLY OPERATE THE ATS WITH THE
UTILITY OR THE GENERATOR AVAILABLE.
WARNING
HIGH VOLTAGES ARE PRESENT IN AND AROUND TRANSFER
SWITCH EQUIPMENT. BEFORE ATTEMPTING TO MANUALLY TRANS-
FER, DISCONNECT THE LINE POWER FROM THE EQUIPMENT BEING
SERVICED BY OPENING AND LOCKING OUT, IF POSSIBLE, THE NEXT
HIGHEST DISCONNECT DEVICE. FAILURE TO FOLLOW THIS PROCE-
DURE COULD CAUSE SEVERE PERSONAL INJURY AND/OR DEATH.
ALWAYS TURN THE UTILITY POWER OFF AND TURN THE GENERA-
TOR CONTROL SELECTOR SWITCH TO THE “OFF” POSITION BEFORE
ATTEMPTING A MANUAL TRANSFER.
