Format: PDF (Printable Document)
File Language: English
File Pages: 41
File Size: 0.38 MB (Speed Download Link)
Brand: Kohler
Model: KB Series Automatic Transfer Switches
Book No: tp5813
Type of Document: Operation and Installation Manual
$ 40
An automatic transfer switch like the Kohler KB Series sits between your utility power and your generator, usually in plant rooms, commercial buildings, or critical facilities, and it decides when to move the load from one source to the other. This manual is what I’d keep on hand when I’m installing, setting up, or verifying that switch operation is clean and safe. For example, if the generator starts but the building never transfers over, this document walks you through how to confirm wiring, adjust settings, and test the sequence so you can isolate whether the fault is in the ATS or upstream.
Applications & Use Cases
FAQ
Q: Can I keep this manual on a tablet or phone at the jobsite?
A: Yes, it’s practical to use digitally so you can zoom in on diagrams and search terms while you’re at the switchboard.
Q: Is it worth printing a hard copy for the equipment room?
A: I recommend a printed, protected copy near the ATS so anyone servicing it can quickly reference wiring, settings, and test procedures.
Safety Note
Always de-energize and lock out all power sources before opening or working inside the transfer switch.
SUBJECT PAGE SUBJECT PAGE
Safety Precautions and Instructions . . . . . . I
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . i
Service Assistance . . . . . . . . . . . . . . . . . . . . . . i
Section 1. Specifications . . . . . . . . . . . . . . . . 1-1
Purpose of Automatic Transfer Switch . . . . . . . 1-1
Transfer Switch Components . . . . . . . . . . . . . . 1-1
Purpose of Bypass/Isolation Switch . . . . . . . 1-2
Components of SB-Series Switch . . . . . . . . . 1-2
Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Interpreting a Transfer Switch Part Number . . 1-6
SB-Series Specifications . . . . . . . . . . . . . . . . . . 1-7
Standard Features . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Section 2. Transfer Switch Operation . . . . 2-1
Description of Bypass/Isolation Switch
Components . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Description of the Bypass/Isolation Status
Panel Lamps 1000-4000 Amp Only . . . . . . . 2-2
ATS Sequence of Operation . . . . . . . . . . . . . . . 2-3
Operation of the Bypass/Isolation Switch . . . . 2-4
Electric Operation Test . . . . . . . . . . . . . . . . . . . . 2-7
Bypass/Isolation Switch Operation Notes . . . . 2-7
Preventive Maintenance . . . . . . . . . . . . . . . . . . . 2-7
Manual Load Transfer . . . . . . . . . . . . . . . . . . . . . 2-8
Disconnecting the Control Panel . . . . . . . . . . . . 2-8
Reconnecting the Plug . . . . . . . . . . . . . . . . . . . . 2-8
Section 3. Removal and Reconnection of
the ATS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
To Remove the ATS . . . . . . . . . . . . . . . . . . . . . . 3-1
To Reconnect the ATS . . . . . . . . . . . . . . . . . . . . 3-3
Section 4. Accessories . . . . . . . . . . . . . . . . . . 4-1
Section 5. Installation . . . . . . . . . . . . . . . . . . . 5-1
Upon Receipt of Unit . . . . . . . . . . . . . . . . . . . . . . 5-1
Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Lifting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Mechanical Installation . . . . . . . . . . . . . . . . . . . . 5-2
Remove the Transfer Switch, 1000-4000 Amp
Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
ATS Supporting Foundation . . . . . . . . . . . . . . . . 5-3
Electrical Connections . . . . . . . . . . . . . . . . . . . . 5-3
Testing Power Cable . . . . . . . . . . . . . . . . . . . . . . 5-3
Connecting Power Cables . . . . . . . . . . . . . . . . . 5-4
Bus Connections . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Harnesses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Engine Starting Contacts . . . . . . . . . . . . . . . . . . 5-5
Installing the Transfer Switch,
1000-1600 Amp Switches . . . . . . . . . . . . . . . . 5-5
Nonpowered Inspections, 1000-4000 Amp
Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
Inspection 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
Inspection 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
Inspection 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
Functional Tests . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
Voltage Checks . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
Manual Operation Check . . . . . . . . . . . . . . . . . . 5-8
Electrical Operation Test . . . . . . . . . . . . . . . . . . 5-9
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
Generator Set Does Not Start When Test
Switch Is Operated . . . . . . . . . . . . . . . . . . . . 5-10
Transfer Switch Does Not Retransfer
After Normal Returns or After Test Switch is
Placed in the AUTO Position . . . . . . . . . . . 5-10
With Generator Set Running, Transfer Switch
Does not Transfer to Emergency . . . . . . . . 5-10
Transfer Switch Retransfers the Load,
But Generator Set Continues to Run . . . . . 5-10
Bypass Handle Cannot be Turned . . . . . . . . 5-10
Isolation Handle Cannot be Turned
to the Closed Position . . . . . . . . . . . . . . . . . . 5-10
Normal Source Fails While in
Bypassed-to-Normal Position . . . . . . . . . . . 5-10
Appendix A. Glossary of Abbreviations . . A-1
