# TBEA 30 MVA 34.5 kV / 200-800V 60 kA Electric Arc Furnace (EAF) Steel Melting Transformer

> TBEA 30 MVA 34.5 kV / 200-800V 60 kA Electric Arc Furnace (EAF) Steel Melting Transformer belongs to the Arc & Melting Furnace Transformers (EAF/LF/SAF) category and is rated at 30 MVA with 34.5/0.6 kV primary/secondary voltage. Application: Heavy Steel Melting Arc Furnace Power Supply. Final ratings must be verified against the manufacturer datasheet.

> SKU: VF-TBEA-EAF-30MVA-345 | Brand: TBEA (Tebian Electric Apparatus) | Category: Power & Energy Equipment / Transformers / Special Industrial & Process Transformers / Arc & Melting Furnace Transformers (EAF/LF/SAF)

**Voltformer canonical:** https://voltformer.com/product/tbea-30-mva-34-5-kv-200-800v-60-ka-electric-arc-furnace-eaf-steel-melting-transformer - markdown version: https://voltformer.com/product/tbea-30-mva-34-5-kv-200-800v-60-ka-electric-arc-furnace-eaf-steel-melting-transformer.md

## Overview

TBEA 30 MVA 34.5 kV / 200-800V 60 kA Electric Arc Furnace (EAF) Steel Melting Transformer is intended for Heavy Steel Melting Arc Furnace Power Supply. Configured electrical data: 30 MVA, 34.5/0.6 kV primary/secondary voltage, 50 Hz, 3-phase, vector group configuration-specific vector group and short-circuit impedance 18%. Construction: Copper (Cu-Cu); cooling: OFWF (Forced Oil / Water Cooled); 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 | 30 MVA |
| Primary / secondary voltage | 34.5 kV / 0.6 kV (200V - 800V (Multi-step motorized tap changer)) |
| Frequency / phases | 50 Hz / 3-phase - Special connection (Ynd / open-delta secondary) |
| Short-circuit impedance (Uk) | 18% |
| No-load loss P0 | 18.50 kW |
| Load loss Pk | 195.0 kW |
| Calculated efficiency (power factor = 1) | 99.29% at 100% load; 99.55% at 50% load |
| Loss class | Configuration-specific loss class |
| Windings | Copper (Cu-Cu) - cooling: OFWF (Forced Oil / Water Cooled) - insulation: Class A / reinforced mechanical support |
| Temperature rise | 65 K - sound pressure: 75 dB(A) |
| Mass and dimensions | 48000 kg - 5400×3400×4600 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/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: $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-EAF-30MVA-345","quantity":1}]}
```

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