In this article

1. Project context – integrated power modules in OEM machines
2. Integration pain points with “one-off” wiring
3. TPS solution – standardized OEM power cabinet family
4. Wiring, BOM, harness and labels as a reusable package
5. Results – faster development, first-time EMC / safety pass, quicker installs
6. Clarifying “integrated power module” vs. automotive TIPM
7. When to consider an OEM power cabinet for your own systems
8. FAQ about integrated power modules and OEM power cabinets

Project context – integrated power modules in OEM machines

The customer in this case is a test equipment OEM supplying functional and end-of-line testers for power electronics manufacturing. Their systems use integrated power modules from major semiconductor vendors – high-performance power packages that combine switching devices, drivers and protection into a single compact unit to simplify board layout and improve reliability.

On paper, the module solved the power-electronics design challenge. In practice, every test rack still needed:

• Main disconnects, fuses and breakers for the module and auxiliaries.
• EMC filters, copper busbars and protective earth routing inside an industrial cabinet.
• 24 V control power distribution, safety relays and wiring to the OEM’s PLC.
• Documentation that would satisfy UL 508A industrial control panels and CE reviewers.

Over a few generations of testers, the OEM ended up with several machine types and test racks, all built on similar integrated power modules but with slightly different power layouts. That made repeatability, documentation and integration with automation software harder than it needed to be.

Integration pain points with “one-off” wiring

The OEM’s internal team and their control panel OEM identified three repeating problems:

• Integration effort repeated for every order. Engineers spent hours deciding fuse sizes, cable gauges and terminal layouts even when the machine power level was nearly identical.
• Inconsistent documentation. Drawings, BOMs and labels were maintained per machine rather than per power section, which created confusion during UL 508A and CE reviews.
• Installers saw a “new” cabinet every time. On the production line, wiring harnesses and mounting holes changed from project to project, increasing build time and error risk.

At the same time, safety and EMC requirements were getting tighter. Guidance on UL 508A industrial control panels and short-circuit current ratings stresses consistent component selection and properly documented SCCR markings for each panel. The OEM wanted to improve compliance, but without turning every project into a standards workshop.

TPS solution – standardized OEM power cabinet family

Instead of letting every machine start from a blank panel layout, TPS proposed a family of OEM power cabinets built around the same integrated power module technology:

• Three power levels (Small / Medium / Large) to cover the OEM’s typical testers.
• Standard footprints for 19-inch racks and floor-standing enclosures.
• Defined interfaces: AC in, DC bus, 24 V auxiliaries, safety and control I/O.

For each cabinet, TPS delivered the physical build and the integration details:

• Module, filter, terminal blocks, copper busbars and protective earth network.
• Pre-terminated harnesses toward the OEM’s PLC, safety PLC and field connectors.
• Label set and nameplates designed to align with UL 508A industrial control panel practices.

With this architecture, the OEM’s engineering team could treat the power section like any other tested component in their automation platform: select a cabinet size, drop it into the rack layout, and connect a known set of harnesses to PLC and safety I/O. The control panel OEM no longer had to invent a new layout every time – they built from the same drawings and label sets.

Wiring, BOM, harness and labels as a reusable package

TPS did not stop at cabinet hardware. Each OEM power cabinet came with a documentation and test package designed to plug directly into the OEM’s machine file and their control panel OEM workflow:

• Wiring diagrams with consistent device tags for the integrated power module, filters, breakers and terminal blocks.
• Bill of material with listed and recognized components suitable for UL 508A industrial control panels.
• Label set including nameplates, SCCR markings and field wiring terminals.
• Basic functional checks and insulation tests documented per cabinet serial number.

For the OEM’s documentation team, the biggest change was mindset: the cabinet documentation became a reusable asset maintained once, while each new machine file simply referenced the appropriate cabinet variant. Issues discovered during one certification review could be fixed in the cabinet package and reused everywhere.

Results – faster development, first-time EMC / safety pass, quicker installs

The OEM tracked several concrete improvements after adopting the OEM power cabinet approach:

• Development time reduced. Power section design work per new tester dropped significantly because engineers chose from an existing cabinet instead of drawing a new layout and protection scheme.
• First-time EMC and safety pass. Using proven layouts, filters and protective devices reduced the number of surprises at EMC labs and during safety inspections. Lessons learned from previous TPS projects and public EMC / control-panel guidance could be baked into the cabinet design.
• Production installation became predictable. Installers on the production line learned one cabinet family with fixed mounting and harness points, rather than a new configuration on every order.
• Multi-site rollout was easier. When the OEM added a second manufacturing site and a new control panel OEM, they could simply copy the established cabinet package instead of re-explaining the power section.

These benefits are typical whenever integrated power modules move from “per-project experiment” to “standardized OEM power section.” The electrical engineering effort shifts from repetitive wiring to platform-level improvement.

Clarifying “integrated power module” vs. automotive TIPM

When engineers search for phrases like module totally integrated power or totally integrated power module tipm, many search results explain an automotive TIPM – a fuse and relay box that acts as the electrical nerve center in modern vehicles. That is very different from the integrated power modules and OEM power cabinets discussed in this case.

In this article:

• Integrated power module means a compact power-electronics module used inside industrial equipment or testers.
• OEM power cabinet means the complete industrial enclosure built around that module – including filters, breakers, terminals, harness and labels – designed to fit into OEM machines and test racks.

Being explicit in documentation about these terms helps reviewers and panel builders understand that the project belongs under industrial standards like UL 508A, not automotive service procedures.

When to consider an OEM power cabinet for your own systems

The lesson from this integration and automation case is not that every project needs an OEM power cabinet. It is that once the same integrated power module and power concept appear in multiple control panels, treating them as a standardized power section usually pays off.

Signs that you are ready for this step include:

• You have several test racks or OEM machines with similar power requirements and protection schemes.
• Your team spends more time fixing drawings and responding to panel-shop questions than improving the core product.
• New sites or partners are building control panels and you want consistent layouts and documentation.
• EMC or safety issues tend to appear in the power section rather than the rest of the machine.

In those situations, outsourcing the power cabinet to TPS – including module, filter, terminal blocks, harness and labels – lets your team focus on application software, measurement hardware and overall machine performance.