Selection & Price Guide · 2026
Distribution Transformer Selection & Price Guide 2026
Standard S13-M oil-immersed and SCB13 dry-type distribution transformers — full model numbers linked to product pages, with descriptions and live copper-adjusted FOB Qingdao reference prices driven by the pricing engine.
100 – 6,300 kVA
Oil-immersed S13-M · standard design
100 – 2,000 kVA
Dry-type SCB13 · standard design
$14,248 /t
LME copper, USD/ton (2026-08-25)
±3% / $1,000
Copper-linked price sensitivity
How to read this guide: prices below are FOB Qingdao factory reference prices for standard designs with copper windings (10 kV / 0.4 kV, Dyn11, IEC 60076). They are computed live by the same pricing engine that powers the product pages — anchored to a base LME copper price of $14,185/ton, where every ±$1,000/ton move adjusts copper-wound prices by ±3%. Click any model number to open its full product detail page with the interactive quote calculator.
Oil-Immersed Distribution Transformers — S13-M
Three-phase, S13 low-loss, 10 kV / 0.4 kV, copper winding, off-load tap changer, Dyn11. Standard-design models below map one-to-one to live product pages. FOB Qingdao reference prices are copper-adjusted.
| Capacity | Model | Description | Reference price (FOB) |
|---|---|---|---|
| 100 kVA | S13-M-100/10/0.4 | 100kVA, 3-phase oil-immersed transformer, 50Hz, primary 10kV (HV 10kV), secondary 400V (LV 400V), S13, insulation A, impedance 4% | $1,881copper-adjusted |
| 200 kVA | S13-M-200/10/0.4 | 200kVA, 3-phase oil-immersed transformer, 50Hz, primary 10kV (HV 10kV), secondary 400V (LV 400V), S13, insulation A, impedance 4.5% | $2,750copper-adjusted |
| 315 kVA | S13-M-315/10/0.4 | 315kVA, 3-phase oil-immersed transformer, 50Hz, primary 10kV (HV 10kV), secondary 400V (LV 400V), S13, insulation A, impedance 4.5% | $4,085copper-adjusted |
| 500 kVA | S13-M-500/10/0.4 | 500kVA, 3-phase oil-immersed transformer, 50Hz, primary 10kV (HV 10kV), secondary 400V (LV 400V), S13, insulation A, impedance 4.5% | $5,655copper-adjusted |
| 630 kVA | S13-M-630/10/0.4 | 630kVA, 3-phase oil-immersed transformer, 50Hz, primary 10kV (HV 10kV), secondary 400V (LV 400V), S13, insulation A, impedance 4.5% | $6,965copper-adjusted |
| 800 kVA | S13-M-800/10/0.4 | 800kVA, 3-phase oil-immersed transformer, 50Hz, primary 10kV (HV 10kV), secondary 400V (LV 400V), S13, insulation A, impedance 6% | $7,730copper-adjusted |
| 1,000 kVA | S13-M-1000/10/0.4 | 1000kVA, 3-phase oil-immersed transformer, 50Hz, primary 10kV (HV 10kV), secondary 400V (LV 400V), S13, insulation A, impedance 6% | $8,534copper-adjusted |
| 1,600 kVA | S13-M-1600/10/0.4 | 1600kVA, 3-phase oil-immersed transformer, 50Hz, primary 10kV (HV 10kV), secondary 400V (LV 400V), S13, insulation A, impedance 6% | $12,606copper-adjusted |
| 2,000 kVA | S13-M-2000/10/0.4 | 2000kVA, 3-phase oil-immersed transformer, 50Hz, primary 10kV (HV 10kV), secondary 400V (LV 400V), S13, insulation A, impedance 6% | $15,447copper-adjusted |
| 3,150 kVA | S13-M-3150/10/0.4 | 3150kVA, 3-phase oil-immersed transformer, 50Hz, primary 10kV (HV 10kV), secondary 400V (LV 400V), S13, insulation A, impedance 7% | $21,646copper-adjusted |
| 5,000 kVA | S13-M-5000/10/0.4 | 5000kVA, 3-phase oil-immersed transformer, 50Hz, primary 10kV (HV 10kV), secondary 400V (LV 400V), S13, insulation A, impedance 7% | $30,488copper-adjusted |
| 6,300 kVAcustom rating | S13-M-6300/10 | 6300kVA, 3-phase oil-immersed transformer (≥ 6300 kVA engineered to order) — primary 10–35 kV, secondary 0.4 kV, S13, copper winding. | Customquote on request |
Ratings above 5,000 kVA (6300 kVA and higher) are built to order — no standard catalogue model is shown, so they carry a custom quotation rather than a live reference price.
Dry-Type Transformers — SCB13
Three-phase, SCB13 epoxy cast-resin, 10 kV / 0.4 kV, copper winding, Class F insulation, AN cooling, Dyn11, IEC 60076. Each model below links to its product detail page.
| Capacity | Model | Description | Reference price (FOB) |
|---|---|---|---|
| 100 kVA | SCB13-100/10/0.4 | 100kVA, 3-phase cast resin dry-type transformer, 50Hz, primary 10kV (HV 10kV), secondary 400V (LV 400V), SCB13, insulation F, impedance 4% | $2,672copper-adjusted |
| 200 kVA | SCB13-200/10/0.4 | 200kVA, 3-phase cast resin dry-type transformer, 50Hz, primary 10kV (HV 10kV), secondary 400V (LV 400V), SCB13, insulation F, impedance 4.5% | $3,852copper-adjusted |
| 315 kVA | SCB13-315/10/0.4 | 315kVA, 3-phase cast resin dry-type transformer, 50Hz, primary 10kV (HV 10kV), secondary 400V (LV 400V), SCB13, insulation F, impedance 4.5% | $4,786copper-adjusted |
| 500 kVA | SCB13-500/10/0.4 | 500kVA, 3-phase cast resin dry-type transformer, 50Hz, primary 10kV (HV 10kV), secondary 400V (LV 400V), SCB13, insulation F, impedance 4.5% | $6,472copper-adjusted |
| 630 kVA | SCB13-630/10/0.4 | 630kVA, 3-phase cast resin dry-type transformer, 50Hz, primary 10kV (HV 10kV), secondary 400V (LV 400V), SCB13, insulation F, impedance 4.5% | $8,690copper-adjusted |
| 1,000 kVA | SCB13-1000/10/0.4 | 1000kVA, 3-phase cast resin dry-type transformer, 50Hz, primary 10kV (HV 10kV), secondary 400V (LV 400V), SCB13, insulation F, impedance 6% | $12,490copper-adjusted |
| 1,600 kVA | SCB13-1600/10/0.4 | 1600kVA, 3-phase cast resin dry-type transformer, 50Hz, primary 10kV (HV 10kV), secondary 400V (LV 400V), SCB13, insulation F, impedance 6% | $18,546copper-adjusted |
| 2,000 kVA | SCB13-2000/10/0.4 | 2000kVA, 3-phase cast resin dry-type transformer, 50Hz, primary 10kV (HV 10kV), secondary 400V (LV 400V), SCB13, insulation F, impedance 6% | $21,036copper-adjusted |
The dry-type premium over oil-immersed of the same kVA runs roughly +80% to +150% — driven by cast-resin insulation and cooling equipment. Reference prices above are for IP00 (bare) cast-resin units with AN cooling.
Copper Price Link
Copper is the largest raw-material cost in a copper-wound transformer. All prices on this page are indexed to LME copper, so they stay honest as the metal moves. The figures below update automatically from the live copper feed used across the site.
LME copper $14,248/t
Adjustment vs base +0.2%
Copper factor ×1.0019
Source: LME Copper · 2026-08-25
Adjustment formula
Applied to copper-wound models only — every reference price on this page is a copper-wound standard design.
price = basetable(kVA) × copperFactor · copperFactor = 1 + (current − $14,185) / 1,000 × 0.03
At the current LME level the adjustment is under ±1% — copper sits very close to its base anchor, so the prices above are valid almost as printed today. Larger copper moves are automatically reflected in the table and on every product page.
Worked example — 1,000 kVA oil-immersed S13-M-1000/10/0.4
- Base table price: $8,534
- Copper factor at current LME: ×1.0019
- Adjusted reference price: ≈ $8,550 (FOB Qingdao, standard design, before other factor adjustments)
Price Factors
Every figure on this page assumes the same-house baseline (S13-M / SCB13, copper winding, 10 kV / 0.4 kV, Dyn11). These factors move the price up or down on request.
Material
Copper vs. aluminium winding
Tables assume copper. Aluminium-wound units cost about ×0.65 but carry no copper linkage.
Efficiency
Loss class
Oil: S11 ×0.92, S13 ×1.0, S20 ×1.2, S22 ×1.38. Dry: SCB11 ×0.92, SCB13 ×1.0, SCB14 ×1.18, SCB15 ×1.3.
Voltage
HV rating adjustment
From the 10 kV base: 6 kV ×0.96, 10–11 kV ×1.0, 13.8 kV ×1.05, 20 kV ×1.1, 22 kV ×1.12, 33 kV ×1.28, 35 kV ×1.3.
Tap changer
On-load vs off-load
Oil-immersed on-load tap changer adds ×1.22 over the off-load baseline.
Cooling / enclosure
Dry-type options
Insulation Class H ×1.1; enclosure IP20 ×1.06, IP23 ×1.1, IP31 ×1.14; forced-air (AF) cooling ×1.08.
Logistics
Beyond FOB
FOB ends at Qingdao port. Sea freight, insurance, import duty and destination taxes are separate and quoted on request.
Pricing Basis & Disclaimer
- Basis: FOB Qingdao (China), standard design, copper winding, Dyn11, IEC 60076, factory reference price.
- Price band: the reference price carries a ±8% band against the base value to reflect configuration and component variance.
- Not included: sea freight, insurance, import duty, VAT, destination taxes or on-site installation.
- Copper index: prices are anchored to LME copper $14,185/ton and adjust ±3% per $1,000/ton.
- Validity: figures are market reference ranges, not a binding offer; final price comes from a written quotation against a confirmed specification.
- Custom: non-standard voltage, impedance, tapping, protection, enclosure or certification change both price and lead time.
Frequently Asked Questions
How much does a 1000 kVA transformer cost in China?
A 1000 kVA oil-immersed S13-M transformer is about $8,534 FOB Qingdao; the dry-type SCB13 equivalent is about $12,490. Both assume copper windings and standard design, and both adjust with the LME copper price.
How does the copper price affect a transformer's price?
Copper is the biggest raw-material cost in a copper-wound unit. Prices are indexed to LME copper at $14,185/ton; every ±$1,000/ton change moves copper-wound prices by ±3%. Aluminium-wound units are far less sensitive.
Why is a dry-type transformer more expensive than oil-immersed?
Cast-resin (epoxy) insulation, air cooling and the safety/design requirements it serves cost more to manufacture — typically +80% to +150% over the same oil-immersed kVA.
Are the model numbers on this page real products?
Yes. Every linked model (for example S13-M-100/10/0.4) is a real catalogue item. Click it to open the product detail page, which carries full specifications, losses, dimensions and an interactive quote calculator.
What does "FOB Qingdao" include and exclude?
FOB Qingdao means the goods are delivered to the port and cleared for export in China. It excludes ocean freight, insurance, import duty and destination-side taxes — those are arranged and paid by the buyer.
How do I get a firm, binding quote?
Send your rated kVA, primary/secondary voltage, connection group, frequency, impedance, winding material, standard (IEC / GOST / UL / ANSI) and quantity. We reply with a written quotation that locks the copper price at the time of offer.