ASCO Power Technologies Products Digital Binder
ASCO 7000 SERIES Bypass-Isolation Transfer Switches
Transfer / Bypass Status Panel
Bypass switch position Transfer switch position
Source availability
Isolation handle position
Instantly see the status of power availablility and switch positions.
Bypass and Isolation - Simple as 1, 2, 3
1 Bypass
Power Knowledge Application and Design Factors for Automatic Transfer and Bypass-Isolation Switches Part 1
Push in the transfer switch bypass handle and turn it counter clockwise
Bypass Switch
Normal Source
To Load
Emergency Source
GenSet
1
L
Bypass Switch
Load
N
E
Isolation Contacts
L
Utility
Automatic Transfer Switch
Transfer Switch
N
E
2 Set in Test Position
Normal Source
To Load
Emergency Source
Bypass Switch
GenSet
Part 2
L
Bypass Switch
3D Bypass Switch Animation
N
E
Load
Turn isolation handle counter clockwise until window shows “Test”
Transfer switch operating circuits remain connected to the controls through secondary disconnects
Isolation Contacts
Utility
L
Automatic Transfer Switch
Transfer Switch
N
E
3 Isolation Position
4
Bypass Switch
Normal Source
To Load
Emergency Source
GenSet
2
L
Bypass Switch
Load
N
E
3
Turn isolation handle counter clockwise until window shows “isolate”
Transfer switch operating circuits are disconnected from the controls
Isolation Contacts
Utility
L
Automatic Transfer Switch
Transfer Switch
N
E
ASCO Power Technologies 160 Park Avenue, Florham Park, NJ 07932
www.se.com/us/en/brands/ascopower/ customercare@ascopower.com 1-800-800-ASCO (2726) © 2025. Publication 2074 R2
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