Sourcing Guide
Failed Transformer or Switchgear? How to Source an Emergency Replacement
When a transformer or switchgear fails, start by sending what you already have: nameplate photos, photos of the equipment and its surroundings, the one-line diagram, any drawings, your needed-by date, and the delivery location. You do not need a finished specification to begin. GridGear works from those documents, treats everything except the stated problem as something the replacement should match, and comes back with options. Depending on what the search finds, those options can include New / Unused surplus, Remanufactured / Reman or Reconditioned / Refurbished units, Used units, and Factory New equipment with its quoted lead time. Your engineer, utility, or authority having jurisdiction (AHJ) then decides which option is technically acceptable and how it is installed.
Send the documents you have, say what needs to change, and let the search start from the existing unit.
What to send first
Most installed units already have documents that can start the search:
- Nameplate photos. For a transformer, the unit nameplate. For switchgear, the assembly nameplate plus the nameplates on the breakers or switches involved.
- Photos of the equipment. Overall views, the connections and enclosure, and the space around it (pad, room, adjacent gear).
- One-line diagram and drawings. Outline, shop, or lineup drawings if you have them. An old quote or submittal also helps.
- Manufacturer, model, and serial if they are known.
- Needed-by date and delivery location.
- A short note on what needs replacing, plus anything about the new unit that should be different from the old one.
- The conditions you can accept, if you know them. "Not sure" is fine.
Only take photos from where it is safe to stand. Do not open energized compartments, defeat interlocks, or remove barriers to get a sourcing photo; use external labels and existing drawings, and leave internal access to qualified personnel under the site's safety procedures.
On GridGear's quote forms, choose Emergency replacement as the project type and Emergency/as soon as possible as the needed-by date. Uploads are limited to 4 MB in total; larger photos and drawings can go to info@gridgearsupply.com.
The full list of fields that help, and what each one is used for, is covered in What Information Do I Need to Source a Transformer? and What Information Do I Need to Source Medium-Voltage Switchgear?.
Why matching the existing unit matters
A replacement has to fit a site that is already built: the pad or room, the cable and bus connections, the rest of the lineup, and the system it serves. That is why GridGear starts from the assumption that the replacement should match the existing unit in everything except the problem you have described. If something should change, such as a different capacity, voltage, or configuration, say so in the request and the search will account for it.
Starting from a match keeps the search focused. Rather than finding something close in rating and working back from there, GridGear looks for units that line up with what is already installed.
- Transformers. The nameplate carries most of what a match depends on. If it is hard to read or you are not sure which fields matter, see How to Read a Transformer Nameplate for Sourcing or Replacement. A clear photo is more useful than a typed guess.
- Switchgear. Matching usually means the lineup, section, or breaker family, not only the ratings. For replacement breakers, the breaker family and model need to match the existing cubicle; electrical ratings alone do not establish fit. See How to Identify Existing Switchgear.
How accepting more conditions widens your options
GridGear uses nine equipment conditions, in this order: Factory New, New / Unused, Remanufactured / Reman, Rebuilt / Rewound, Reconditioned / Refurbished, Used, As-Is, Parts / Salvage, and Unknown. Each describes the state of the unit. The definitions and the documentation that typically comes with each are in Equipment Conditions GridGear Uses for Transformers and Switchgear.
On a replacement with schedule pressure, the conditions you can accept shape how wide the search can go. Selecting more than one condition on the quote form lets GridGear look across independent equipment suppliers and owners rather than within a single condition. If you are not sure yet, choose "Any if technically acceptable" or "Not sure" and let your engineer or utility narrow it down once options are on the table.
A wider search does not guarantee a match, and secondary-market equipment is not always cheaper or faster than factory new. Including Factory New in the conditions you accept means its quoted lead time can sit alongside the other options for comparison.
What to confirm before you accept an option
When options come back, a few sourcing checks help your team compare them before anything goes to technical review:
| Check | What to look at |
|---|---|
| Match to the existing unit | The option's nameplate or data against the existing unit, and against any changes you asked for |
| Condition and documentation | The condition of the unit and the documentation available for it, such as test reports, nameplate photos, and current photos |
| Physical fit | Footprint, connection locations, and shipping dimensions and weight against the site and access route |
| Scope of supply | What is included, such as accessories, breakers, and racking tools for switchgear |
| Timing and logistics | Availability and ship timing as stated by the supplier, and the delivery location |
These checks are for comparing options. Whether a unit is technically acceptable, and how it is installed, tested, and energized, is decided by the buyer's engineer, the utility, or the AHJ. GridGear does not approve equipment for installation.
What to expect from GridGear on an emergency request
- Your documents are the starting point. Nameplate photos, equipment photos, a one-line, and drawings are enough to begin. You do not need to fill in every field first.
- The existing unit is the reference. Everything except the stated problem is treated as something the replacement should match, unless you say otherwise.
- Options, not a questionnaire. For each option, GridGear shares the condition, the documentation available, and the timing the supplier has stated. If a document leaves a gap that would change the search, such as an unreadable rating, GridGear asks about that item.
- Third-party providers where needed. GridGear may coordinate qualified third-party providers that support the transaction, such as testing or freight. The buyer selects, contracts with, and pays the provider directly, and the provider remains responsible for its scope and work. GridGear does not perform, resell, supervise, warrant, or guarantee the provider's technical services.
GridGear does not guarantee availability, a lead time, or a match, and it does not provide engineering approval.
Need to replace a failed transformer or switchgear?
Send the nameplate photos, equipment photos, one-line, and drawings you have, along with your needed-by date, delivery location, and the conditions you can accept. GridGear will start from the existing unit and share the options it finds for your team to review.
Request a Transformer Quote or Request a Switchgear Quote
Technical References
This resource is GridGear-authored sourcing content. It covers what to send and how to compare options when replacing failed equipment. It does not cover failure diagnosis, protection or coordination, or installation. Formal engineering, installation, and procurement decisions should use the applicable project specifications, drawings, manufacturer data, test reports, and qualified technical review by the buyer's engineer, the utility, or the AHJ.