# Astor Enerji 3150 kVA 34.5/0.8 kV Solar PV Step-Up Transformers

> Astor Enerji 3150 kVA 34.5/0.8 kV Solar PV Step-Up Transformers belongs to the Solar PV Step-Up Transformers category and is rated at 3150 kVA with 34.5/0.8 kV primary/secondary voltage. Application: 3.15 MW Solar PV Inverter Step-Up. Final ratings must be verified against the manufacturer datasheet.

> SKU: VF-AST-EST-SOL-3150-345 | Brand: Astor Enerji | Category: Power & Energy Equipment / Transformers / Renewable Energy Transformers (PV, Wind & BESS) / Solar PV Step-Up Transformers

**Voltformer canonical:** https://voltformer.com/product/astor-3150-kva-34-5-kv-ester-oil-solar-transformer - markdown version: https://voltformer.com/product/astor-3150-kva-34-5-kv-ester-oil-solar-transformer.md

## Overview

Astor Enerji 3150 kVA 34.5/0.8 kV Solar PV Step-Up Transformers is intended for 3.15 MW Solar PV Inverter Step-Up. Configured electrical data: 3150 kVA, 34.5/0.8 kV primary/secondary voltage, 50 Hz, 3-phase, vector group Dy11y11 and short-circuit impedance 6.5%. Construction: Copper (Cu-Cu); cooling: KNAN; loss class: Ecodesign Tier 2. 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:** 3.15 MW Solar PV Inverter Step-Up
- **Target industries:** Utility Ground-Mounted Solar (PV), Floating Solar PV Plants, Rooftop Solar PV
- **Brand:** [Astor Enerji](https://voltformer.com/brand/astor-enerji.md) - Turkey's transformer production giant Astor Enerji manufactures oil-immersed hermetic, cast-resin dry-type and power transformers up to 800 kV in its modern 140,000 m² facilities in Ankara ASO 2. OSB,
- **Category:** [Power & Energy Equipment](https://voltformer.com/catalog.md) / **Transformers** / [Renewable Energy Transformers (PV, Wind & BESS)](https://voltformer.com/category/renewable-energy-transformers.md): Multi-winding, harmonic-tolerant step-up transformers for solar (PV), wind and battery storage (BESS) plants. / [Solar PV Step-Up Transformers](https://voltformer.com/category/renewable-energy-transformers/solar-pv-step-up-transformers.md)

## Technical Specifications

| Property | Value |
|---|---|
| Rated power | 3150 kVA |
| Primary / secondary voltage | 34.5 kV / 0.8 kV (±2 x 2.5%) |
| Frequency / phases | 50 Hz / 3-phase - Dy11y11 |
| Short-circuit impedance (Uk) | 6.5% |
| No-load loss P0 | 2.01 kW |
| Load loss Pk | 22.9 kW |
| Calculated efficiency (power factor = 1) | 99.2154% at 100% load; 99.5113% at 50% load |
| Loss class | Ecodesign Tier 2 |
| Windings | Copper (Cu-Cu) - cooling: KNAN - insulation: Class A / high thermal endurance |
| Temperature rise | 65 K - sound pressure: 56 dB(A) |
| Mass and dimensions | 7950 kg - 2410×1660×2380 mm |
| Enclosure | IP54 / outdoor field Tipi - 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 60076-16 (Solar PV standard)
- TS EN 50708 series
- EU 548/2014 + 2019/1783 Tier 2
- IEEE C57.159

## Accessories

**Included:** Electrostatic Shield (Shielding), Buchholz Relay, Pressure Relief Device, Dual Magnetic Level Indicators
**Optional:** Envirotemp FR3 Bio-Oil Filling, Online Gas & Moisture Monitoring Sensor, MV Plug-in Terminals

## Official sources

- https://astoras.com.tr/

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

Manufacturer family/application source. Astor Enerji Cargill Envirotemp FR3 doğal ester sıvılı solar fotovoltaik transformatörleri; K-sınıfı 316°C yanma noktası ile açık saha GES tesislerinde maksimum yangın güvenliği ve çevre koruması sağlar. 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: $39,000 – $46,000 USD
- Delivery time: 2–8 weeks (may vary depending on technical configuration, factory capacity and destination) - Warranty: 36 months
- Compliance candidates: IEC 60076-16 (Solar PV standard), TS EN 50708 series, EU 548/2014 + 2019/1783 Tier 2, IEEE C57.159. 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-AST-EST-SOL-3150-345","quantity":1}]}
```

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