Control & Distribution
Automatic Switching & Changeover Control Panels
Control assemblies that supervise configured sources and execute an agreed, interlocked switching sequence when operating conditions require transfer.
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When this solution is considered
- A facility or equipment group has more than one configured source and needs a defined transfer sequence.
- Manual changeover no longer provides the required operating discipline, indication or integration.
- The project requires source monitoring, interlocking and coordination with generator or plant controls.
What we need to understand
The useful starting point is the actual electrical system and operating requirement—not a generic rating request.
- 01
Source arrangement, single-line diagram and the loads included in the transfer scope.
- 02
System ratings, protection details and switching-device requirements.
- 03
Preferred transfer, return, delay, failure and manual-override sequences.
- 04
Generator, UPS, building-management or other external control interfaces.
- 05
Required alarms, indications, metering and remote communication points.
Configuration considerations
- Switching architecture and interlocking must match the source arrangement and project protection philosophy.
- Transfer delays, source-healthy logic, fail states and manual controls are documented before implementation.
- External permissives, generator signals, communication and annunciation are treated as explicit interfaces.
Typical applications
These examples indicate where the solution may be considered; they do not represent completed Arnav projects.
- Industrial utilities and production loads supplied by configured normal and alternate sources.
- Critical facility systems where a repeatable transfer sequence and clear source status are required.
- Projects integrating mains, generator, UPS or other accepted source arrangements.
Frequently asked questions
What defines the automatic changeover sequence?
The sequence is based on the accepted source arrangement, source-health signals, transfer and return conditions, time delays, interlocks, failure responses and manual operating requirements.
Can the panel interface with an existing generator controller?
It may be possible when the existing controller signals, voltage levels, control ownership and operating sequence are documented and included as explicit project interfaces.
Does automatic switching guarantee uninterrupted power?
No general uninterrupted-power claim should be inferred. Transfer behavior depends on the source architecture, switching method, delays, downstream equipment and the agreed project design.
Share your automatic switching requirement.
Send the information already available. The initial review can identify the remaining inputs needed to define scope.