# GE Vernova 750 MVA 400 kV Generator Step-Up Transformer

> GE Vernova medium-high voltage GSU family for large thermal, hydro and renewable power stations.

> SKU: VF-GEV-GSU-750M-400K | Brand: GE Vernova (General Electric) | Category: Power & Energy Equipment / Transformers / High-Voltage & Transmission Power Transformers / Generator Step-Up Transformers (GSU)

**Voltformer canonical:** https://voltformer.com/product/ge-vernova-750-mva-400-kv-generator-step-up-transformer - markdown version: https://voltformer.com/product/ge-vernova-750-mva-400-kv-generator-step-up-transformer.md

## Overview

GE Vernova 750 MVA 400 kV Generator Step-Up Transformer is intended for 500 kV Grid Connection Points for Large Power Plants. Configured electrical data: 750 MVA, 400/24 kV primary/secondary voltage, 50 Hz, 3-phase, vector group YNd11 and short-circuit impedance 16%. Construction: Copper (Cu-Cu); cooling: ONAF; loss class: JEC / IEC SOTA GSU. 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:** 500 kV Grid Connection Points for Large Power Plants
- **Target industries:** Nuclear Power Plants, Combined-Cycle Gas Turbine (CCGT) Power Plants, Mega Hydroelectric Power Plants (HPP)
- **Brand:** [GE Vernova (General Electric)](https://voltformer.com/brand/ge-vernova.md) - GE Vernova Grid Solutions provides high-performance protection, control, and automation solutions including the renowned Multilin 8 Series and MiCOM Agile product lines.
- **Category:** [Power & Energy Equipment](https://voltformer.com/catalog.md) / **Transformers** / [High-Voltage & Transmission Power Transformers](https://voltformer.com/category/power-transmission-transformers.md): 5 MVA–1000 MVA 110 kV, 154 kV, 380 kV, 500 kV and 1000 kV UHV AC/DC transmission and interconnection power transformers. / [Generator Step-Up Transformers (GSU)](https://voltformer.com/category/power-transmission-transformers/generator-step-up-transformers.md)

## Technical Specifications

| Property | Value |
|---|---|
| Rated power | 750 MVA |
| Primary / secondary voltage | 400 kV / 24 kV (OLTC/DETC - project configured) |
| Frequency / phases | 50 Hz / 3-phase - YNd11 |
| Short-circuit impedance (Uk) | 16% |
| No-load loss P0 | 165.00 kW |
| Load loss Pk | 1275.0 kW |
| Calculated efficiency (power factor = 1) | 99.8084% at 100% load; 99.8712% at 50% load |
| Loss class | JEC / IEC SOTA GSU |
| Windings | Copper (Cu-Cu) - cooling: ONAF - insulation: Class A (105°C) |
| Temperature rise | 65 K - sound pressure: 70 dB(A) |
| Mass and dimensions | 320000 kg - 11200×6400×8200 mm |
| Enclosure | IP55 outdoor - wheel gauge: 2000 mm |
| LI / AC withstand | 1550 kV peak / 680 kV rms - partial discharge: 30 pC |
| Environment | -25°C / +45°C; altitude ≤ 1000 m |
| Core steel | CRGO Laser-Treated Grain-Oriented Silicon Steel (23ZDMH85 / Baosteel B23R085) |
| Bushings / terminals | 500 kV RIP Kondenser Bushing |

## Standards

- IEC 60076
- IEEE C57
- JEC

## Accessories

**Included:** Online monitoring interface, Oil temperature indicator, Pressure relief device
**Optional:** OLTC, Online DGA, Bushing monitoring

## Official sources

- https://www.gevernova.com/electrification/equipment/transformers/generator-step-transformers
- https://www.gevernova.com/electrification/equipment/transformers/power-transformers
- https://www.gevernova.com/electrification/automation/protection-control-metering/

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

Manufacturer family/application source. GE Vernova publishes GSU transformer solutions from 5 MVA to 1000 MVA and broad power-transformer coverage through 1200 kV AC. The 750 MVA, 400 kV entry is a selectable generation-interconnection envelope. 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: $3,600,000 – $4,200,000 USD
- Delivery time: 2–8 weeks (may vary depending on technical configuration, factory capacity and destination) - Warranty: 60 months
- Compliance candidates: IEC 60076, IEEE C57, JEC. 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-GEV-GSU-750M-400K","quantity":1}]}
```

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