# Sunten Electric 3300 kVA 35 kV / 590V 24-Pulse Metro DC Traction Rectifier Dry-Type Transformer

> Sunten Electric 3300 kVA 35 kV / 590V 24-Pulse Metro DC Traction Rectifier Dry-Type Transformer belongs to the Railway & Traction Transformers category and is rated at 3300 kVA with 35/0.59 kV primary/secondary voltage. Application: Metro & Tram Lines 750V/1500V DC Traction Rectifier Power Supply. Final ratings must be verified against the manufacturer datasheet.

> SKU: VF-SUNTEN-TRAC-3300-35 | Brand: Sunten Electric | Category: Power & Energy Equipment / Transformers / Special Industrial & Process Transformers / Railway & Traction Transformers

**Voltformer canonical:** https://voltformer.com/product/sunten-electric-3300-kva-35-kv-590v-24-pulse-metro-dc-traction-rectifier-dry-type-transformer - markdown version: https://voltformer.com/product/sunten-electric-3300-kva-35-kv-590v-24-pulse-metro-dc-traction-rectifier-dry-type-transformer.md

## Overview

Sunten Electric 3300 kVA 35 kV / 590V 24-Pulse Metro DC Traction Rectifier Dry-Type Transformer is intended for Metro & Tram Lines 750V/1500V DC Traction Rectifier Power Supply. Configured electrical data: 3300 kVA, 35/0.59 kV primary/secondary voltage, 50 Hz, 3-phase, vector group configuration-specific vector group and short-circuit impedance 8.5%. Construction: Copper (Cu-Cu); cooling: AN/AF; loss class: Traction Railway Grade. 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:** Metro & Tram Lines 750V/1500V DC Traction Rectifier Power Supply
- **Target industries:** Municipal Metro & Transit Systems, Tram & Light Rail Transit (LRT)
- **Brand:** [Sunten Electric](https://voltformer.com/brand/sunten-electric.md) - Pioneer of cast-resin dry-type transformer technology; specialist in F1 fire-safe SCB18 dry-type, K-Factor 13 hyperscale data center transformers and rail metro DC traction rectifier transformers.
- **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. / [Railway & Traction Transformers](https://voltformer.com/category/special-industrial-process-transformers/railway-traction-transformers.md)

## Technical Specifications

| Property | Value |
|---|---|
| Rated power | 3300 kVA |
| Primary / secondary voltage | 35 kV / 0.59 kV (±2 x 2.5%) |
| Frequency / phases | 50 Hz / 3-phase - Dy11d0 / phase-shifted 24-pulse |
| Short-circuit impedance (Uk) | 8.5% |
| No-load loss P0 | 3.40 kW |
| Load loss Pk | 24.5 kW |
| Calculated efficiency (power factor = 1) | 99.16% at 100% load; 99.43% at 50% load |
| Loss class | Traction Railway Grade |
| Windings | Copper (Cu-Cu) - cooling: AN/AF - insulation: Class H (180°C) |
| Temperature rise | 100 K - sound pressure: 60 dB(A) |
| Mass and dimensions | 8200 kg - 2350×1350×2300 mm |
| Enclosure | IP00 / optional IP23 - wheel gauge: 1070 mm |
| LI / AC withstand | 170 kV peak / 70 kV rms - partial discharge: 5 pC |
| Environment | -25°C / +40°C; altitude ≤ 1000 m |
| Core steel | CRGO Laser-Treated Grain-Oriented Silicon Steel (23ZDMH85 / Baosteel B23R085) |
| Bushings / terminals | Direct Copper Busbar Terminals (Busbar Integrated / IP00-IP31) |

## Standards

- IEC 60076-11
- IEC 60146
- EN 50329

## Accessories

**Included:** PT100 Thermostat, Extra Impact Protection
**Optional:** IP23 Protection Enclosure

## Official sources

- https://en.sunten.com.cn/

- **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: $46,000 – $54,000 USD
- Delivery time: 2–8 weeks (may vary depending on technical configuration, factory capacity and destination) - Warranty: 36 months
- Compliance candidates: IEC 60076-11, IEC 60146, EN 50329. 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-SUNTEN-TRAC-3300-35","quantity":1}]}
```

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