GridGear

Transformer Sourcing

Pad-mounted, substation, dry-type, and specialty transformers when factory lead times, replacements, or unusual ratings stall the project.

GridGear helps project teams source transformers when the OEM channel is too slow, the required voltage or configuration is hard to find, or a replacement is needed on a constrained schedule. We search for new-surplus, unused, remanufactured, and used equipment and help narrow the requirement when nameplate data or drawings are incomplete.

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Padmount transformers in an electrical equipment yard

Equipment families GridGear sources

These are sourcing capabilities, not a public inventory. Ratings below are typical ranges GridGear works with. Send the actual nameplate or specification when you have it.

Pad-Mounted Transformers

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Outdoor distribution transformers for commercial, industrial, data-center, utility, and solar/BESS loads. GridGear sources liquid-filled padmounts in common radial and loop-feed configurations.

Typical rating

  • 1ph: 5–250 kVA
  • 3ph: 75–5,000 kVA+
  • Large: up to 10 MVA

Primary voltage / class

  • 4.16 kV
  • 12.47 kV
  • 13.2 kV
  • 13.8 kV
  • 24.94 kV
  • 34.5 kV

Secondary voltage

  • 208Y/120 V
  • 240/120 V
  • 480Y/277 V
  • 600 V
  • 4.16 kV
  • 13.8 kV

Phase

  • 1ph
  • 3ph

Construction / configuration

  • Liquid-filled
  • Radial or loop feed
  • Dead-front or live-front
Additional specifications

Construction / medium

  • Liquid-filled
  • Mineral oil
  • Natural ester

Common variants / configurations

  • Radial
  • Loop feed
  • Dead-front
  • Live-front

Common applications

  • Commercial
  • Industrial
  • Data centers
  • Utility distribution
  • Solar / BESS

Substation Transformers

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Station and power transformers for utility substations, data centers, industrial plants, and generation interconnection. This sourcing range includes stationary units and mobile / trailer-mounted transformers.

Typical rating

  • Distribution: 300–5,000 kVA
  • Power: 5–160 MVA+
  • Mobile: multi-MVA

Primary voltage / class

  • 34.5 kV
  • 69 kV
  • 115 kV
  • 138 kV
  • 230 kV

Secondary voltage

  • 4.16 kV
  • 12.47 kV
  • 13.2 kV
  • 13.8 kV
  • 34.5 kV

Phase

  • 3ph

Construction / configuration

  • Liquid-filled
  • Stationary or mobile / trailer-mounted
  • DETC or LTC
Additional specifications

Construction / medium

  • Liquid-filled
  • Mineral oil
  • Natural ester

Common variants / configurations

  • Stationary
  • Mobile / trailer-mounted
  • DETC
  • LTC
  • Tertiary winding

Common applications

  • Utility substations
  • Data centers
  • Industrial
  • Generation / interconnection
  • Temporary / emergency

Unit Substation Transformers

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Close-coupled transformers that feed primary or secondary lineups for data centers, industrial plants, and campus distribution. Liquid-filled and dry-type constructions are both in scope.

Typical rating

  • 300–5,000 kVA
  • Larger engineered units

Primary voltage / class

  • 4.16 kV
  • 12.47 kV
  • 13.2 kV
  • 13.8 kV
  • 24.94 kV
  • 34.5 kV

Secondary voltage

  • 208Y/120 V
  • 480Y/277 V
  • 600 V
  • 4.16 kV

Phase

  • 3ph

Construction / configuration

  • Liquid-filled or dry-type
  • Close-coupled
  • Throat / bus connection
Additional specifications

Construction / medium

  • Liquid-filled
  • Dry-type

Common variants / configurations

  • Close-coupled
  • Throat / bus connection
  • Primary / secondary lineup

Common applications

  • Data centers
  • Industrial
  • Commercial campuses
  • Plant distribution

Dry-Type Transformers

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Indoor and outdoor dry-type transformers for commercial, industrial, data-center, indoor-substation, and renewable applications. Typical constructions include VPI/VPE and cast coil.

Typical rating

  • LV: 5–1,000 kVA
  • MV: 300–5,000 kVA+

Primary voltage / class

  • 208 V
  • 240 V
  • 480 V
  • 600 V
  • 2.4 kV
  • 4.16 kV
  • 12.47 kV
  • 13.8 kV
  • 34.5 kV

Secondary voltage

  • 120/240 V
  • 208Y/120 V
  • 480Y/277 V
  • 600 V
  • 4.16 kV
  • 13.8 kV

Phase

  • 1ph
  • 3ph

Construction / configuration

  • VPI / VPE or cast coil
  • Indoor / outdoor
  • NEMA 1 / 3R / 4X
Additional specifications

Construction / medium

  • VPI / VPE
  • Cast coil
  • Copper / aluminum

Common variants / configurations

  • Indoor / outdoor
  • NEMA 1 / 3R / 4X
  • AA / AA-FA

Common applications

  • Data centers
  • Commercial
  • Industrial
  • Indoor substations
  • Renewables

Pole-Mounted Transformers

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Overhead distribution transformers for utility, municipal, and rural systems, including storm-recovery and fleet-replacement work. Conventional and CSP units, single or banked.

Typical rating

  • 1ph: 5–333 kVA
  • 3ph: banked units

Primary voltage / class

  • 7.2 kV
  • 12.47Y/7.2 kV
  • 13.2 kV
  • 13.8 kV
  • 14.4 kV
  • 24.94Y/14.4 kV

Secondary voltage

  • 120/240 V
  • 240/120 V
  • 480 V

Phase

  • 1ph
  • 3ph bank

Construction / configuration

  • Liquid-filled
  • Conventional or CSP
  • Single unit or bank of 3
Additional specifications

Construction / medium

  • Liquid-filled
  • Mineral oil
  • Natural ester

Common variants / configurations

  • Conventional
  • CSP
  • Single unit
  • Bank of 3

Common applications

  • Utility distribution
  • Municipal / rural systems
  • Storm recovery
  • Fleet replacement

Specialty Transformers

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Project-specific transformers outside standard distribution and substation packages, including grounding/zigzag, autotransformer, phase-shifting, rectifier/drive, and multi-winding units.

Typical rating

  • Project-specific

Primary voltage / class

  • LV
  • MV
  • HV

Secondary voltage

  • Project-specific

Phase

  • 1ph
  • 3ph

Construction / configuration

  • Liquid-filled or dry-type
  • Grounding / zigzag
  • Autotransformer
  • Phase-shifting
  • Rectifier / drive
  • Multi-winding
Additional specifications

Construction / medium

  • Liquid-filled
  • Dry-type

Common variants / configurations

  • Grounding / zigzag
  • Autotransformer
  • Phase-shifting
  • Rectifier / drive
  • Multi-winding

Common applications

  • Grounding
  • Power quality
  • Industrial process
  • Renewables
  • Special projects

When to Call GridGear

Reach out when the usual OEM or distributor path is not producing a workable option in time.

  • Factory lead time will not meet the project schedule
  • Voltage, kVA/MVA, or configuration is hard to find through normal channels
  • A replacement is needed on a constrained timeline
  • Surplus, unused, remanufactured, or used equipment is acceptable
  • Nameplate data or drawings are incomplete and need to be narrowed
  • A secondary-market search may be faster than a new factory order

Frequently Asked Questions

What information do I need to request a transformer quote?
Send as much technical information as you know. A nameplate photo, one-line, drawing, old quote, or equipment photos can be enough to begin — kVA and voltages are helpful but not required.
Can GridGear help source surplus or unused transformers?
Yes. We help locate new surplus, unused, remanufactured, and used transformer equipment from contractors, EPCs, utilities, and industrial owners when OEM lead times do not fit your schedule.
Can GridGear help source used or removed transformers?
Yes, when condition and documentation support the application. We help organize photos, nameplate data, test reports, and inspection options so your team can evaluate supply with confidence.
What if I only have a nameplate photo?
Upload it with your quote request. Nameplate photos often contain enough information for our team to review the requirement and begin sourcing options.
Can GridGear coordinate inspection, oil testing, freight, or logistics?
Yes. We coordinate third-party inspection, testing, freight quotes, and rigging through qualified partners. We do not perform installation or commissioning directly.

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