6kV/10kV/20kV to 0.4kV Transformer Solution for PV Power Station

Industry Pain Points

PV power stations have typical intermittent and fluctuating power generation characteristics. Traditional transformers applied in PV scenarios face prominent practical problems:

1. Traditional transformers feature high no-load and load loss, causing severe power waste and reducing overall PV power generation revenue.

2. PV power output fluctuates greatly with sunlight, leading to frequent transformer overload, unstable voltage and poor power quality.

3. Outdoor PV stations are exposed to high temperature, strong wind, rain and dust. Ordinary transformers have poor environmental adaptability and high failure rate.

4. Conventional equipment lacks intelligent monitoring functions, relying on manual inspection with high operation and maintenance costs.

5. Non-standard models lead to difficult spare parts matching and low construction efficiency for distributed PV projects.

Recommended Products (6kV/10kV/20kV to 0.4kV)

We provide dedicated low-loss transformer models tailored for distributed and centralized PV power stations, covering all required voltage levels:

Oil-Immersed Transformer (Outdoor PV Power Station)

Models: S13-M, S20-M series (6kV/10kV/20kV to 0.4kV, 50kVA–2500kVA)

Fully sealed, ultra-low loss, good heat dissipation, low initial cost, suitable for large outdoor ground PV power stations.

Dry-Type Transformer (Rooftop & Indoor PV Station)

Models: SCB13, SCB20 series (6kV/10kV/20kV to 0.4kV, 50kVA–1600kVA)

Oil-free, fireproof, explosion-proof, low noise, IP54 protection grade, suitable for rooftop PV, industrial and commercial indoor PV scenarios.

Intelligent Monitoring Module

Supports real-time monitoring of transformer temperature, load and overvoltage, with fault early warning for unmanned O&M of PV stations.

Technical Solution

Adopt low-loss design + PV adaptive optimization + intelligent monitoring + standardized installation tailored for PV power generation scenarios:

Adopt high-permeability silicon steel core and full-copper winding, greatly reduce no-load and load loss, adapt to intermittent PV power generation.

Optimize voltage regulation design to resist PV power fluctuation, stabilize 0.4kV low-voltage output and improve grid-connection power quality.

Strengthen outdoor dust-proof, waterproof and anti-high-temperature structure to adapt to harsh outdoor working conditions of PV stations.

Equip intelligent sensing system to realize real-time data monitoring and automatic fault alarm, reducing manual operation pressure.

Standardize 6kV/10kV/20kV to 0.4kV fixed ratio design, support rapid modular installation of distributed PV projects.

Project Cases

4.1 Industrial Rooftop PV Project (10kV/0.4kV)

Applied Model: SCB13-1000kVA 10kV/0.4kV dry-type transformer. Solved fire safety and noise problems of factory rooftop PV. Reduced equipment failure rate by 42% and ensured stable self-use power generation.

4.2 Ground PV Power Station (20kV/0.4kV)

Applied Model: S20-M-1600kVA 20kV/0.4kV oil-immersed transformer. Ultra-low loss design increased annual power generation income by about 3.5%, adapting to long-term outdoor high-load operation.

4.3 Small Distributed PV Project (6kV/0.4kV)

Applied Model: S13-M-630kVA 6kV/0.4kV transformer. Realized fast on-site installation, stable voltage output, and effectively reduced daily O&M costs.

Installation Environment Description

This full series of PV dedicated transformers adapt to most PV power station working conditions:

Applicable altitude: ≤2000m, working temperature: -40℃ ~ +50℃, adapting to high-temperature outdoor PV scenarios.

Oil-immersed models for open ground PV stations, with rainproof, dust-proof and anti-corrosion performance.

Dry-type models for rooftop, indoor and densely populated PV scenarios, fireproof and pollution-free.

Lightweight and standardized structure, low foundation requirements, suitable for scattered distributed PV construction.

Cost Saving Analysis

1.Energy Saving Cost: Ultra-low loss design reduces comprehensive power loss by 30%-40%. A single medium-capacity transformer saves thousands of dollars in annual power loss costs and improves PV power generation revenue.

2. O&M Cost: High-reliability structure lowers failure rate. Intelligent monitoring reduces manual inspection workload, saving 35%+ annual operation and maintenance expenses.

3. Initial Investment: Standard fixed models eliminate customized costs, unified accessories reduce procurement and inventory pressure, and rapid installation shortens construction cycle.

4. Lifecycle Benefit: Service life extends to 25 years, reducing equipment replacement frequency. Stable operation avoids grid-connection penalty losses, bringing long-term stable economic benefits for PV stations.

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