# TBEA 40 MVA 110/27.5 kV Scott-Connected 25 kV High-Speed Rail (HSR) Catenary Transformer

> TBEA 40 MVA 110/27.5 kV Scott-Connected 25 kV High-Speed Rail (HSR) Catenary Transformer belongs to the Railway & Traction Transformers category and is rated at 40 MVA with 110/27.5 kV primary/secondary voltage. Application: High-Speed Rail 25 kV / 2x25 kV Catenary Traction Substation. Final ratings must be verified against the manufacturer datasheet.

> SKU: VF-TBEA-TRC-40MVA-110 | Brand: TBEA (Tebian Electric Apparatus) | Category: Power & Energy Equipment / Transformers / Special Industrial & Process Transformers / Railway & Traction Transformers

**Voltformer canonical:** https://voltformer.com/product/tbea-40-mva-110-27-5-kv-scott-connected-25-kv-high-speed-rail-hsr-catenary-transformer - markdown version: https://voltformer.com/product/tbea-40-mva-110-27-5-kv-scott-connected-25-kv-high-speed-rail-hsr-catenary-transformer.md

## Overview

TBEA 40 MVA 110/27.5 kV Scott-Connected 25 kV High-Speed Rail (HSR) Catenary Transformer is intended for High-Speed Rail 25 kV / 2x25 kV Catenary Traction Substation. Configured electrical data: 40 MVA, 110/27.5 kV primary/secondary voltage, 50 Hz, 3-phase, vector group configuration-specific vector group and short-circuit impedance 12%. Construction: Copper (Cu-Cu); cooling: ONAF/OFAF; loss class: Ecodesign Tier 2. These values support preliminary engineering selection; verify insulation levels, thermal limits, short-circuit duty, installation conditions and applicable standards against the manufacturer datasheet and the site study.

- **Application:** High-Speed Rail 25 kV / 2x25 kV Catenary Traction Substation
- **Target industries:** National Railways & Rail Networks, High-Speed Rail (HSR) Tracks, Railway Electrification Contractors
- **Brand:** [TBEA (Tebian Electric Apparatus)](https://voltformer.com/brand/tbea-energy.md) - TBEA, one of the world's largest transformer manufacturers, delivers world-leading engineering from 1000 kV UHV AC/DC power transformers to SCB18 cast-resin dry-type, S20/S22 ultra-low-loss hermetic a
- **Category:** [Power & Energy Equipment](https://voltformer.com/catalog.md) / **Transformers** / [Special Industrial & Process Transformers](https://voltformer.com/category/special-industrial-process-transformers.md): Arc furnace (EAF), green hydrogen electrolyser, rectifier, traction and mining Ex-proof transformers. / [Railway & Traction Transformers](https://voltformer.com/category/special-industrial-process-transformers/railway-traction-transformers.md)

## Technical Specifications

| Property | Value |
|---|---|
| Rated power | 40 MVA |
| Primary / secondary voltage | 110 kV / 27.5 kV (±4 x 2.5% (OLTC)) |
| Frequency / phases | 50 Hz / 3-phase - Scott-connected (3-phase / 2-phase) |
| Short-circuit impedance (Uk) | 12% |
| No-load loss P0 | 21.00 kW |
| Load loss Pk | 165.0 kW |
| Calculated efficiency (power factor = 1) | 99.54% at 100% load; 99.69% at 50% load |
| Loss class | Ecodesign Tier 2 |
| Windings | Copper (Cu-Cu) - cooling: ONAF/OFAF - insulation: Class A |
| Temperature rise | 65 K - sound pressure: 67 dB(A) |
| Mass and dimensions | 58000 kg - 5800×3600×5100 mm |
| Enclosure | IP55 - wheel gauge: 1435 mm |
| LI / AC withstand | 550 kV peak / 230 kV rms - partial discharge: 20 pC |
| Environment | -25°C / +40°C; altitude ≤ 1000 m |
| Core steel | CRGO Laser-Treated Grain-Oriented Silicon Steel (23ZDMH85 / Baosteel B23R085) |
| Bushings / terminals | RIP (Resin Impregnated Paper) Dry Condenser High-Voltage Bushing |

## Standards

- IEC 60310 (railway traction transformers)
- IEC 60076
- EN 50329

## Accessories

**Included:** Scott Connection Winding Group, Vacuum OLTC, DGA Online Gas Analysis, Dual Buchholz Relays
**Optional:** SCADA / Railway Automation Interface

## Official sources

- https://en.tbea.com/product_list/48.html

- **Source scope:** manufacturer-family
- **Last reviewed:** 2026-09-13

Manufacturer portfolio/family source. Confirm the exact order code, guaranteed ratings and project-specific options against the current OEM datasheet before procurement or an SLD study.

## Pricing & Logistics

- Pricing type: RFQ (On Request) - Indicative range: $460,000 – $540,000 USD
- Delivery time: 2–8 weeks (may vary depending on technical configuration, factory capacity and destination) - Warranty: 36 months
- Compliance candidates: IEC 60310 (railway traction transformers), IEC 60076, EN 50329. Verify applicability and conformity against the exact offered model and project jurisdiction.

## RFQ

Request a formal factory quotation via Voltformer RFQ:

```json
POST https://voltformer.com/api/v1/rfq
{"companyName":"Example Energy","email":"procurement@example.com","items":[{"skuOrId":"VF-TBEA-TRC-40MVA-110","quantity":1}]}
```

Full catalog JSON: https://voltformer.com/agent-catalog.json - OpenAPI: https://voltformer.com/openapi.json