# Oil-Immersed Hermetic Distribution Transformers - Distribution Transformers

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

> Power/rating scope: 50 kVA - 3150 kVA | Voltage scope: 6.3 kV - 36 kV / 400V

**Canonical:** https://voltformer.com/category/distribution-transformers/oil-immersed-hermetic-transformers - markdown: https://voltformer.com/category/distribution-transformers/oil-immersed-hermetic-transformers.md

## Parent

[Distribution Transformers](https://voltformer.com/category/distribution-transformers.md): 50 kVA–3150 kVA oil-immersed hermetic, conservator and cast-resin dry-type medium-voltage distribution transformers.

## Sample Products

- [VF-SE-MIN-1000-345 - Schneider Electric Minera 1000 kVA 34.5/0.4 kV Oil-Immersed Hermetic Distribution Transformer](https://voltformer.com/product/schneider-electric-minera-1000-kva-34-5-0-4-kv-oil-immersed-hermetic-distribution-transformer.md)
- [VF-SE-MIN-1600-345 - Schneider Electric Minera 1600 kVA 34.5/0.4 kV Oil-Immersed Hermetic Distribution Transformer](https://voltformer.com/product/schneider-electric-minera-1600-kva-34-5-0-4-kv-oil-immersed-hermetic-distribution-transformer.md)
- [VF-TBEA-S22-400-35 - TBEA S22 Series 400 kVA 35/0.4 kV Super Low-Loss Oil-Immersed Hermetic Distribution Transformer](https://voltformer.com/product/tbea-s22-400-kva-35-0-4-kv-super-low-loss-oil-immersed-hermetic-distribution-transformer.md)
- [VF-TBEA-S22-630-35 - TBEA S22 Series 630 kVA 35/0.4 kV Super Low-Loss Oil-Immersed Hermetic Distribution Transformer](https://voltformer.com/product/tbea-s22-630-kva-35-0-4-kv-super-low-loss-oil-immersed-hermetic-distribution-transformer.md)
- [VF-TBEA-S22-1000-35 - TBEA S22 Series 1000 kVA 35/0.4 kV Super Low-Loss Oil-Immersed Hermetic Distribution Transformer](https://voltformer.com/product/tbea-s22-1000-kva-35-0-4-kv-super-low-loss-oil-immersed-hermetic-distribution-transformer.md)
- [VF-TBEA-S20-1600-35 - TBEA S20 Series 1600 kVA 35/0.4 kV High-Efficiency Oil-Immersed Distribution Transformer](https://voltformer.com/product/tbea-s20-1600-kva-35-0-4-kv-high-efficiency-oil-immersed-distribution-transformer.md)
- [VF-TBEA-S20-2500-35 - TBEA S20 Series 2500 kVA 35/0.4 kV High-Efficiency Hermetic Distribution Transformer](https://voltformer.com/product/tbea-s20-2500-kva-35-0-4-kv-high-efficiency-hermetic-distribution-transformer.md)
- [VF-SIE-FIT-1600-345 - Siemens Energy FITformer 1600 kVA 34.5/0.4 kV Synthetic Ester-Oil Network Transformer](https://voltformer.com/product/siemens-energy-fitformer-1600-kva-34-5-0-4-kv-synthetic-ester-oil-network-transformer.md)

## Technical specializations

- **Standard Corrugated-Tank Hermetic Distribution (10-34.5 kV)** - Verify configuration-specific ratings and compliance in the manufacturer documentation.
- **Ecodesign Tier 2 Ultra-Low Loss (S20 / S22 / Minera)** - Verify configuration-specific ratings and compliance in the manufacturer documentation.
- **Natural / Synthetic Ester Fluid (Envirotemp FR3 / Midel)** - 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: oil-immersed-hermetic-transformers. The transformer query's subCategory parameter applies only to transformer families. Authenticate and obtain explicit confirmation before RFQ submission.