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IB01602011E For more information visit: www.Eaton.com
Instructional Booklet
Effective: March 2007 Page 21
Fixed and Drawout Magnum Transfer Switches
Figure 24. Close Switch by Pushing Close Button.
5.2 Automatic Transfer Switch
The operating sequence of an ATS is dictated by the switch’s
standard features and selected options. Operation of an ATS dur-
ing Source 1 power source failure, Source 1 power source restora-
tion, and testing is described in the associated Controller
Instruction Booklet.
Figure 25. Switching Device Closing Precautions (Closed Transition Only).
NOTICE
IF A TRANSFER SWITCH WITH ANY TYPE OF ELECTRICAL OPERAT-
ING CAPABILITIES IS TO BE OPERATED MANUALLY UTILIZING THE
MANUAL OPERATING HANDLE, IT IS STRONGLY RECOMMENDED
THAT THE TRANSFER CONTROL CIRCUIT FIRST BE ISOLATED. THIS
IS ACCOMPLISHED BY DISCONNECTING THE S7/P7 PLUG ON THE
TRANSFORMER PANEL. AN AUTOMATIC ENGINE START WILL
OCCUR UNLESS THE GENERATOR RUN SWITCH SET TO “OFF.” IF,
HOWEVER, A TRANSFER SWITCH IS SUPPLIED WITH A FOUR-POSI-
TION SELECTOR SWITCH (OPTION 6H), IT CAN BE TURNED TO THE
OFF POSITION, MAKING IT UNNECESSARY TO UNPLUG THE LOGIC.
IN THE CASE OF THE ATS DESIGN, ANY ATTEMPT TO OPERATE
THE MANUAL HANDLE WITHOUT FIRST ISOLATING THE CONTROL
CIRCUIT CAUSES AN AUTOMATIC TRANSFER.
Follow Manual Operation Instructions Below
switching devices simultaneously
can cause severe injury
Attempting to close both
or death.
WARNING
2. Open both switching devices
Manual Operation Instructions
4. Verify source availability
5. Close switching device on available
source
1. Disconnect Logic Connectors
3. Verify "OPEN" flags
7805C60H05
MANUAL CLOSE BUTTON
Operating Instructions
Do Not Use Without
Reading Manual
OVERLAPPING CONTACTS
must be Synchronized
SOURCE 1 AND SOURCE 2
WARNING
7805C60H04
THIS PRODUCT CONTAINS A SPECIAL CON-
TACT ARRANGEMENT (OVERLAPPING CON-
TACTS). MISUSE CAN RESULT IN DEATH
SEVERE PERSONAL INJURY OR PROPERTY
DAMAGE.
(THIS LABEL IS APPLIED TO THE DOOR )
FOLLOW THE INSTRUCTIONS
OUTLINED IN THE NEXT
WARNING LABEL.
(THIS LABEL IS APPLIED TO
THE COVER OF THE MANUAL
CLOSE BUTTON ON EACH
THESE INSTRUCTIONS ONLY PERTAIN TO
MANUALLY CLOSING A SINGLE SWITCHING
DEVICE. ATTEMPTING TO CLOSE BOTH
SWITCHING DEVICES CAN CAUSE SEVERE
INJURY OR DEATH.
THIS LABEL IS APPLIED TO THE DOOR.