# UHV & EHV Ultra-High-Voltage & HVDC Converter (750-1100 kV) - High-Voltage & Transmission Power Transformers

> Verify configuration-specific ratings and compliance in the manufacturer documentation.

> Power/rating scope: 334 MVA - 1000 MVA | Voltage scope: See selected product ratings

**Canonical:** https://voltformer.com/category/power-transmission-transformers/uhv-ultra-high-voltage-transformers - markdown: https://voltformer.com/category/power-transmission-transformers/uhv-ultra-high-voltage-transformers.md

## Parent

[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.

## Sample Products

- [VF-TBEA-UHV-1000MVA-1000 - TBEA 1000 MVA 1000 kV UHV AC Ultra-High-Voltage Transmission Power Transformer](https://voltformer.com/product/tbea-1000-mva-1000-kv-uhv-ac-ultra-high-voltage-transmission-power-transformer.md)
- [VF-BTW-UHV-1000M-1000K - Baobian Electric (BTW) 1000 MVA 1000 kV Single-Phase UHV AC Autotransformer](https://voltformer.com/product/baobian-electric-btw-1000-mva-1000-kv-single-phase-uhv-ac-autotransformer.md)
- [VF-XD-ZZDFPZ-587M-1100K - China XD Group ZZDFPZ-587.1 MVA ±1100 kV UHVDC Converter Transformer](https://voltformer.com/product/china-xd-group-zzdfpz-587-1-mva-1100-kv-uhvdc-converter-transformer.md)
- [VF-XD-UHV-1000M-750K - China XD Group 1000 MVA 750/330 kV UHV AC Power Transformer](https://voltformer.com/product/china-xd-group-1000-mva-750-330-kv-uhv-ac-power-transformer.md)
- [VF-HYO-UHV-334MVA-765 - Hyosung Heavy Industries 334 MVA 441.7/199.2 kV UHV & EHV Ultra-High-Voltage & HVDC Converter (750-1100 kV)](https://voltformer.com/product/hyosung-334-mva-765-kv-single-phase-uhv-autotransformer.md)
- [VF-HE-HVDC-500M-1100K - Hitachi Energy 500 MVA ±1100 kV HVDC Converter Transformer](https://voltformer.com/product/hitachi-energy-500-mva-1100-kv-hvdc-converter-transformer.md)
- [VF-GEV-UHV-1000M-1200K - GE Vernova 1000 MVA 1200 kV UHV AC Power Transformer](https://voltformer.com/product/ge-vernova-1000-mva-1200-kv-uhv-ac-power-transformer.md)
- [VF-SIE-HVDC-400M-800K - Siemens Energy ±800 kV 400 MVA UHVDC Converter Transformer](https://voltformer.com/product/siemens-energy-400-mva-800-kv-uhvdc-converter-transformer.md)

## Technical specializations

- **750-1100 kV UHV AC Grid Transmission Transformers** - Verify configuration-specific ratings and compliance in the manufacturer documentation.
- **±800 kV / ±1100 kV HVDC Converter Transformers** - Verify configuration-specific ratings and compliance in the manufacturer documentation.

## Official sources

- https://webstore.iec.ch/en/publication/599

- **Last reviewed:** 2026-09-13

## RFQ

Use the family-specific tools in [the tool reference](https://voltformer.com/tool-reference.md) and the canonical taxonomy at https://voltformer.com/agent-catalog.json. Sub-category: uhv-ultra-high-voltage-transformers. The transformer query's subCategory parameter applies only to transformer families. Authenticate and obtain explicit confirmation before RFQ submission.