# TBEA 45 MVA 35/0.42 kV Arc & Melting Furnace Transformers (EAF/LF/SAF)

> TBEA 45 MVA 35 kV heavy-duty ladle refining furnace (LF) transformer with OFWF water-oil forced cooling.

> SKU: VF-TBEA-LF-45M-35 | Brand: TBEA | Category: Power & Energy Equipment / Transformers / Special Industrial & Process Transformers / Arc & Melting Furnace Transformers (EAF/LF/SAF)

**Voltformer canonical:** https://voltformer.com/product/tbea-45-mva-35-kv-ladle-furnace-transformer - markdown version: https://voltformer.com/product/tbea-45-mva-35-kv-ladle-furnace-transformer.md

## Overview

TBEA 45 MVA 35/0.42 kV Arc & Melting Furnace Transformers (EAF/LF/SAF) is intended for Heavy Steel Melting Arc Furnace Power Supply. Configured electrical data: 45 MVA, 35/0.42 kV primary/secondary voltage, 50 Hz, 3-phase, vector group Dyd11 and short-circuit impedance 7.5%. Construction: Copper (Cu-Cu); cooling: OFWF; loss class: Configuration-specific loss class. 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:** Heavy Steel Melting Arc Furnace Power Supply
- **Target industries:** Steel Works & Foundries, Scrap Steel Smelting Rolling Mills, Foundries & Smelters
- **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. / [Arc & Melting Furnace Transformers (EAF/LF/SAF)](https://voltformer.com/category/special-industrial-process-transformers/electric-arc-furnace-transformers.md)

## Technical Specifications

| Property | Value |
|---|---|
| Rated power | 45 MVA |
| Primary / secondary voltage | 35 kV / 0.42 kV (200V - 800V (Multi-step motorized tap changer)) |
| Frequency / phases | 50 Hz / 3-phase - Dyd11 |
| Short-circuit impedance (Uk) | 7.5% |
| No-load loss P0 | 28.00 kW |
| Load loss Pk | 185.0 kW |
| Calculated efficiency (power factor = 1) | 99.5289% at 100% load; 99.6711% at 50% load |
| Loss class | Configuration-specific loss class |
| Windings | Copper (Cu-Cu) - cooling: OFWF - insulation: Class A / reinforced mechanical support |
| Temperature rise | 65 K - sound pressure: 75 dB(A) |
| Mass and dimensions | 72000 kg - 6500×3800×4600 mm |
| Enclosure | IP54 - wheel gauge: 1435 mm |
| LI / AC withstand | 170 kV peak / 70 kV rms - partial discharge: 10 pC |
| Environment | -25°C / +40°C; altitude ≤ 1000 m |
| Core steel | CRGO Laser-Treated Grain-Oriented Silicon Steel (23ZDMH85 / Baosteel B23R085) |
| Bushings / terminals | Plug-in Separable Elbow Terminals (Dead-Front) / Porcelain DIN 42531 |

## Standards

- IEC 60076
- IEC 61378
- ISO 9001

## Accessories

**Included:** Water Heat Exchanger (OFWF), High-Current Water-Cooled Copper Tube Terminals, Buchholz Relay
**Optional:** Online DGA Gas Monitoring, Electrode Regulation Integration

## Official sources

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

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

Manufacturer family/application source. TBEA ladle refining furnace (LF) transformers engineered for steel secondary metallurgy with low secondary voltage, ultra-high current bus tubes and integrated on-load motorized tap changers. Exact order code, guaranteed losses, dimensions, insulation level, cooling stage, winding material and project options must be confirmed with the OEM before procurement or an SLD study.

## Pricing & Logistics

- Pricing type: RFQ (On Request) - Indicative range: $380,000 – $460,000 USD
- Delivery time: 2–8 weeks (may vary depending on technical configuration, factory capacity and destination) - Warranty: 36 months
- Compliance candidates: IEC 60076, IEC 61378, ISO 9001. 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-LF-45M-35","quantity":1}]}
```

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