# Wolong 2000 kVA 10/1.14-0.66 kV Underground Mining Ex-d Flameproof Dry Transformer

> Wolong 2000 kVA 10/1.14-0.66 kV Underground Mining Ex-d Flameproof Dry Transformer belongs to the Mining & Flameproof (Ex-Proof) category and is rated at 2000 kVA with 10/1.14 kV primary/secondary voltage. Application: Underground Coal Mines, Tunneling & Heavy Mining Conveyor Feeds. Final ratings must be verified against the manufacturer datasheet.

> SKU: VF-WL-MINE-2000-10 | Brand: Wolong Electric (Wolong Transformer) | Category: Power & Energy Equipment / Transformers / Special Industrial & Process Transformers / Mining & Flameproof (Ex-Proof)

**Voltformer canonical:** https://voltformer.com/product/wolong-2000-kva-10-1-14-0-66-kv-underground-mining-ex-d-flameproof-dry-transformer - markdown version: https://voltformer.com/product/wolong-2000-kva-10-1-14-0-66-kv-underground-mining-ex-d-flameproof-dry-transformer.md

## Overview

Wolong 2000 kVA 10/1.14-0.66 kV Underground Mining Ex-d Flameproof Dry Transformer is intended for Underground Coal Mines, Tunneling & Heavy Mining Conveyor Feeds. Configured electrical data: 2000 kVA, 10/1.14 kV primary/secondary voltage, 50 Hz, 3-phase, vector group Dyn11 and short-circuit impedance 5%. Construction: Copper (Cu-Cu); cooling: AN (Flameproof Dry-Type); loss class: Flameproof Mining Standard. 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:** Underground Coal Mines, Tunneling & Heavy Mining Conveyor Feeds
- **Target industries:** Underground Coal & Metal Ore Mines, Tunnel Boring Machine (TBM) Projects
- **Brand:** [Wolong Electric (Wolong Transformer)](https://voltformer.com/brand/wolong-electric.md) - Global electromechanical giant in heavy-industry motor drive transformers (VFD), 25 kV Scott traction transformers for high-speed trains, mining flameproof ex-proof transformers and industrial process
- **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. / [Mining & Flameproof (Ex-Proof)](https://voltformer.com/category/special-industrial-process-transformers/mining-flameproof-ex-proof-transformers.md)

## Technical Specifications

| Property | Value |
|---|---|
| Rated power | 2000 kVA |
| Primary / secondary voltage | 10 kV / 1.14 kV (±2 x 2.5%) |
| Frequency / phases | 50 Hz / 3-phase - Dyn11 |
| Short-circuit impedance (Uk) | 5% |
| No-load loss P0 | 2.70 kW |
| Load loss Pk | 16.5 kW |
| Calculated efficiency (power factor = 1) | 99.05% at 100% load; 99.32% at 50% load |
| Loss class | Flameproof Mining Standard |
| Windings | Copper (Cu-Cu) - cooling: AN (Flameproof Dry-Type) - insulation: Class H (180°C) |
| Temperature rise | 100 K - sound pressure: 60 dB(A) |
| Mass and dimensions | 10500 kg - 4200×1450×1750 mm |
| Enclosure | IP54 / Ex-d I Mb Zırhlı - wheel gauge: 900 mm |
| LI / AC withstand | 75 kV peak / 28 kV rms - partial discharge: 5 pC |
| Environment | -40°C / +50°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 60079-0
- IEC 60079-1
- ATEX Ex-d I Mb
- CE

## Accessories

**Included:** Mining Rail Wheels, Vacuum Breaker & Protection Unit
**Optional:** Gas Monitoring Sensors

## Official sources

- https://ess.wolong.com/product/index.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 (Project Engineering) - Indicative range: $58,000 – $68,000 USD
- Delivery time: 2–8 weeks (may vary depending on technical configuration, factory capacity and destination) - Warranty: 36 months
- Compliance candidates: IEC 60079-0, IEC 60079-1, ATEX Ex-d I Mb, CE. 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-WL-MINE-2000-10","quantity":1}]}
```

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