01What a 1000 kVA Transformer Configuration Can Be
A 1000 kVA transformer is a three-phase, 1 MVA unit in a commonly used commercial and industrial rating. The same capacity is built in several configurations, so the kVA alone does not identify its application or resale fit. California Transformer Buyer reviews the complete nameplate and equipment type when considering a used 1000 kVA transformer.
Common examples include three-phase pad-mount units, low-voltage dry-type transformers, medium-voltage dry VPI units, cast-resin transformers, secondary unit substations and network transformers. Solar inverter step-up and battery energy storage system (BESS) transformers are also found at this capacity. Compare the equipment’s construction and intended installation with our pages on three-phase pad-mount transformers, dry-type transformers, medium-voltage dry-type units and cast-resin transformers.
FLAFull-Load Amps for a 1000 kVA Transformer
Rated full-load current at common California voltages. Single-phase: amps = kVA × 1000 ÷ volts. Three-phase: amps = kVA × 1000 ÷ (1.732 × volts). Use the nameplate voltage of your unit.
| Phase | Voltage | Full-load amps |
|---|---|---|
| Three-phase | 480 V | 1,203 A |
| Three-phase | 600 V | 962 A |
| Three-phase | 4.16 kV | 139 A |
| Three-phase | 12 kV | 48.1 A |
| Three-phase | 12.47 kV | 46.3 A |
| Three-phase | 20.78 kV | 27.8 A |
| Three-phase | 34.5 kV | 16.7 A |
02Typical Voltages and Loads for a 1000 kVA Transformer
The primary voltage depends on the serving system and the equipment’s purpose. Common California distribution and project voltages that may appear on a 1000 kVA nameplate include 4.16 kV, 12 kV, 12.47 kV, 20.78 kV and 34.5 kV. These are examples, not a substitute for the actual nameplate or the site’s electrical requirements.
Secondary ratings may include 480 V, 480Y/277 V, 208Y/120 V or, less commonly in California, 600 V. A pad-mount unit, dry-type transformer and solar or BESS step-up unit can have very different primary and secondary combinations. Buyers need the voltage, connection and tap information—not just a stated “480-volt transformer”—to determine whether a unit suits a potential application.
- Commercial and industrial service around 1 MVA
- Renewable-energy and power conversion system blocks
- Facilities using three-phase distribution or close-coupled switchgear
03How to Read the 1000 kVA Full-Load Amps Table
The full-load amps table shown on this page gives calculated three-phase current for the listed voltages at the 1000 kVA rating. Find the voltage that matches the transformer’s rated side, then read across to its corresponding current. The table is a reference for the listed rating and voltage; it is not a substitute for the nameplate, protection design or engineering review.
Compare the table’s voltage with the high-voltage or low-voltage fields on the nameplate, taking care to distinguish line-to-line voltage from connection details such as grounded-wye. If you are comparing ratings or checking how kVA and current relate, see how transformer kVA and amps are calculated and read.
04Size, Weight and Site Access Vary by Design
A 1000 kVA unit is substantial electrical equipment, but its footprint and shipping weight vary by manufacturer, insulation system, enclosure and accessory package. A liquid-filled pad-mount, a dry-type unit and a transformer integrated with switchgear can have very different dimensions and handling requirements. There is no single reliable size or weight to assume from the kVA rating alone.
Use the nameplate’s total weight and any available outline drawing or shipping documentation when planning a sale. Overall photos help show the enclosure and accessories, while the site location and access details help identify possible loading, rigging and freight considerations. Do not move or open equipment to gather information; take photos only from a safe position and where you are authorized to access it.
05What Affects the Value of a Used 1000 kVA Transformer
A buyer evaluates the full specification and condition rather than the 1000 kVA rating by itself. Voltage and connection, phase, taps, impedance, BIL, cooling class, temperature rise and winding material can affect how readily a unit fits another project. Common California voltages may be easier to place than unusual combinations, but demand depends on the specific unit and market.
Condition, age and documentation also matter. A complete unit with available test reports, clear ownership and useful accessories can be evaluated differently from equipment with missing parts, visible damage or unknown operating history. For liquid-filled equipment, the fluid type, gallons and PCB records are relevant; for dry types, insulation and visible condition matter. These and other considerations are explained in the factors that affect a used transformer’s value.
- New-surplus or used status and year of manufacture
- Nameplate details, test reports and maintenance records
- Visible leaks, rust, bushing damage or missing accessories
- Quantity, location, site access and removal complexity
06What to Send for an Offer on a 1000 kVA Unit
To request an offer, send a clear nameplate photo, overall photos, quantity, California location and a brief description of condition. Include available factory or field test reports, fluid or PCB documentation, and a list of accessories such as switches, fuses, gauges or fans. If the nameplate is hard to read, send the clearest images you can safely obtain and note which fields are uncertain.
Rocky reviews the information and may ask follow-up questions about ownership, records, access or loading needs. California Transformer Buyer purchases only equipment the seller owns or has authority to sell. A written offer states the price, what is included, who handles loading or rigging and freight, and the payment terms and timing. Call or text (951) 403-5738, or use the contact form to request an offer.
07California Pickup Planning for Large Transformers
A 1 MVA transformer can require coordinated handling, especially when it is installed in a constrained area or paired with switchgear. Before pickup is scheduled, the written terms identify who is responsible for loading, rigging and freight. Share access limits and any known site requirements early so those responsibilities can be considered.
The owner’s qualified electrical contractor or serving utility handles electrical isolation and disconnection. Sellers should not disconnect, open, drain or move the transformer themselves. For other equipment sizes, browse transformer kVA sizes, or review options for selling substation and unit-substation transformers.
kVANearby Transformer Sizes We Buy
FAQ1000 kVA Transformer FAQ
Is a 1000 kVA transformer the same as a 1 MVA transformer?
Yes. One megavolt-ampere equals 1000 kilovolt-amperes, so a transformer rated 1000 kVA is a 1 MVA transformer. Check the nameplate for whether the rating applies continuously and whether there are multiple cooling-stage ratings. Include all listed stages when you contact a buyer; a single 1000 kVA figure may not describe every operating condition.
Are 1000 kVA transformers usually three-phase?
Three-phase is the common configuration at this capacity. The 1000 kVA units typically encountered include pad-mount, dry-type, unit-substation, network, solar step-up and BESS transformers. Confirm phase on the nameplate before describing the unit, since capacity alone does not establish the phase or the configuration.
Can I sell a 1000 kVA transformer that has been removed from service?
California Transformer Buyer considers used, pulled, surplus, decommissioned, spare and new-surplus equipment from California sellers. A review is not a guarantee of purchase; the decision depends on the unit’s specifications, condition, records and practical removal considerations. You must own the transformer or have authority to sell it. Utility-owned equipment on your property cannot be sold by the property owner.
What if the transformer’s nameplate is unreadable or missing?
Send overall photos and any legible portions of the plate, and describe what is known about the unit’s rating, voltage, type and history. Existing purchase records, drawings or test reports may help fill gaps. Do not open the enclosure or handle the equipment to search for information; only photograph equipment you are authorized to access from a safe position.
Do I need test reports before asking for an offer?
You can ask for a review with the information available. Test reports are useful supporting documents, especially when they identify insulation condition, turns ratio or other electrical test results, but their absence does not prevent an initial inquiry. Be clear about which records exist and which are unavailable so the unit can be evaluated with accurate expectations.
How are PCB records handled when selling a liquid-filled transformer?
Provide existing PCB labels, test results and fluid documentation, if available; do not assume that an old label or unknown status establishes the current concentration. PCB classification and California oil-management requirements depend on testing, documentation and the applicable facts. Sellers should rely on qualified environmental professionals for determinations and management decisions; this information is not legal advice.