# TBEA 3150 kVA 35/0.8-0.8 kV Dual Secondary Solar PV Step-Up Transformer

> TBEA 3150 kVA 35/0.8-0.8 kV Dual Secondary Solar PV Step-Up Transformer belongs to the Solar PV Step-Up Transformers category and is rated at 3150 kVA with 35/0.8 kV primary/secondary voltage. Application: 3.15 MW Solar PV Inverter Step-Up. Final ratings must be verified against the manufacturer datasheet.

> SKU: VF-TBEA-SOL-3150-35 | Brand: TBEA (Tebian Electric Apparatus) | Category: Power & Energy Equipment / Transformers / Renewable Energy Transformers (PV, Wind & BESS) / Solar PV Step-Up Transformers

**Voltformer canonical:** https://voltformer.com/product/tbea-3150-kva-35-0-8-0-8-kv-dual-secondary-solar-pv-step-up-transformer - markdown version: https://voltformer.com/product/tbea-3150-kva-35-0-8-0-8-kv-dual-secondary-solar-pv-step-up-transformer.md

## Overview

TBEA 3150 kVA 35/0.8-0.8 kV Dual Secondary Solar PV Step-Up Transformer is intended for 3.15 MW Solar PV Inverter Step-Up. Configured electrical data: 3150 kVA, 35/0.8 kV primary/secondary voltage, 50 Hz, 3-phase, vector group Dyn11-yn11 (Dual LV) and short-circuit impedance 7%. Construction: Copper (Cu-Cu); cooling: KNAN (Ester Oil); 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:** [TBEA (Tebian Electric Apparatus)](https://voltformer.com/brand/tbea-energy.md) - TBEA, one of the world's largest transformer manufacturers, delivers world-leading engineering from 1000 kV UHV AC/DC power transformers to SCB18 cast-resin dry-type, S20/S22 ultra-low-loss hermetic a
- **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 | 35 kV / 0.8 kV (±2 x 2.5%) |
| Frequency / phases | 50 Hz / 3-phase - Dyn11-yn11 (Dual LV) |
| Short-circuit impedance (Uk) | 7% |
| No-load loss P0 | 1.95 kW |
| Load loss Pk | 18.0 kW |
| Calculated efficiency (power factor = 1) | 99.37% at 100% load; 99.59% at 50% load |
| Loss class | Ecodesign Tier 2 |
| Windings | Copper (Cu-Cu) - cooling: KNAN (Ester Oil) - insulation: Class A / high thermal endurance |
| Temperature rise | 65 K - sound pressure: 56 dB(A) |
| Mass and dimensions | 8400 kg - 2420×1520×2520 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://en.tbea.com/product_list/48.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 (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-TBEA-SOL-3150-35","quantity":1}]}
```

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