Energy Storage Dry-Type Transformer (Open Type) | Safe, Low Loss & High Reliability

Certification

CNAS

ISO

KEMA

TUV

Open-Type Dry-Type Transformer for Energy Storage Systems

The Open-Type Dry-Type Transformer for Energy Storage Systems is a high-efficiency, safe, and environmentally friendly solution designed for modern energy storage applications. It is ideal for use in hospitals, smart campuses, PV-storage-charging stations, and data centers. Featuring an oil-free open-type design, it offers excellent insulation performance, low losses, and strong short-circuit withstand capability. With efficient heat dissipation and low-noise operation, the transformer adapts well to complex environments and supports both natural air cooling (AN) and forced air cooling (AF).

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CEEG Open-Type Dry-Type Transformer for ESS - High Overload Capacity VPI Transformer for Energy Storage

CEEG Open-Type Dry-Type Transformer for ESS - High Overload Capacity VPI Transformer for Energy Storage

CEEG Open-Type Dry-Type Transformer for ESS - High Overload Capacity VPI Transformer for Energy Storage

CEEG Open-Type Dry-Type Transformer for ESS - High Overload Capacity VPI Transformer for Energy Storage

CEEG Open-Type Dry-Type Transformer for ESS - High Overload Capacity VPI Transformer for Energy Storage

CEEG Open-Type Dry-Type Transformer for ESS - High Overload Capacity VPI Transformer for Energy Storage

Scope of application

Commercial & Industrial Energy Storage

Suitable for park-level energy storage stations, with a focus on system integration and high heat dissipation efficiency.

Commercial & Industrial Energy Storage

PV-Storage-Charging Stations

Ideal for EV charging stations with integrated energy storage, featuring low loss and low noise operation.

PV-Storage-Charging Stations

Data Center Peak Shaving

Designed for on-site energy storage and load balancing, ensuring high reliability and easy maintenance.

Data Center Peak Shaving

Product Description

Product Description

1 Open, non-encapsulated winding structure ensures excellent heat dissipation, strong overload capability, and safe, reliable operation.

CEEG Open-Type Dry-Type Transformer for Energy Storage Systems

2 Equipped with DuPont™ Nomex® VPI (Vacuum Pressure Impregnation) insulation system, featuring a compact and optimized design.

CEEG Open-Type Dry-Type Transformer for Energy Storage Systems

3 Withstands extreme temperatures from -40°C to 220°C, providing strong insulation performance for various energy storage environments.

CEEG Open-Type Dry-Type Transformer for Energy Storage Systems

4 Flame-retardant, non-flammable, and explosion-proof design—ideal for user-side energy storage applications such as hospitals, smart campuses, PV-storage-charging stations, and data centers.

CEEG Open-Type Dry-Type Transformer for Energy Storage Systems

5 Integrated smart transformer terminal with IoT cloud platform support for intelligent monitoring and operation & maintenance.

CEEG Open-Type Dry-Type Transformer for Energy Storage Systems

Product Features

High Safety

100% Oil-Free Safety: Eliminates all risks of leakage and fires for maximum operational safety.
Mission-Critical Ready: Engineered specifically for high-stakes, safety-critical applications.
Hospital & Data Centers: Ideal for power-sensitive environments like hospitals and data centers.

Excellent Insulation Performance

Premium Class F/H: Utilizes high-quality materials for Class F or Class H insulation.
High-Temp Reliability: Ensures stable and continuous performance in high-temperature environments.
Moisture Adaptation: Delivers superior structural protection in high-humidity climates.

Efficient Cooling

AN/AF Cooling: Supports both natural (AN) and forced air (AF) for effective heat dissipation.
Continuous High-Load: Ensures stable, long-term operation under continuous high-load conditions.
Energy Storage Ideal: Perfectly engineered as a core component for energy storage systems (ESS).

Strong Short-Circuit Resistance

Premium HV/LV Structure: Adopts continuous and foil-type winding structures for maximized electrical efficiency.
Advanced VPI Treatment: Formed with Vacuum Pressure Impregnation to ensure flawless insulation integrity.
High Impact Resistance: Delivers exceptional durability against short-circuits and mechanical impacts.

Low Loss & Energy Efficient

Premium Silicon Steel: Manufactured with high-permeability, grain-oriented silicon steel.
45° Step-Lap Tech: Utilizes advanced 45° step-lap technology for optimized core construction.
Energy Consumption Cut: Significantly reduces no-load loss to minimize operational energy consumption.

Low Noise Operation

Anti-Vibration Design: Features an optimized core structure with advanced anti-vibration treatment.
< 55 dB Ultra-Quiet: Guarantees operating noise levels stay strictly below 55 dB.
Noise-Sensitive Ready: Perfectly suited for critical environments like hospitals and smart campuses.

Main Parameters

Capacity Range	100 kVA - 5000 kVA
Rated Voltage	Primary Voltage：6 kV、10 kV、35 kV
Insulation Class	Class F or Class H
Cooling Method	Natural Air Cooling (AN) / Forced Air Cooling (AF)
Frequency	50 Hz / 60 Hz
Short-Circuit Impedance	4% - 6%

Implementation Standard

Implementation Standard

GB/T 1094.1-2013 Power Transformers – Part 1: General Requirements

GB/T 1094.3-2017 Power Transformers – Part 3: Insulation Levels, Dielectric Tests and External Clearances in Air

GB/T 1094.5-2008 Power Transformers – Part 5: Ability to Withstand Short Circuit

GB/T 1094.10-2022 Power Transformers – Part 10: Determination of Sound Levels

GB/T 1094.11-2022 Power Transformers – Part 11: Dry-Type Power Transformers

GB/T 1094.12-2013 Power Transformers – Part 12: Loading Guide for Dry-Type Power Transformers

GB/T 10228-2015 Technical Specifications and Requirements for Dry-Type Power Transformers

Technical Advantages

R&D Cloud Platform

R&D Cloud Platform

An integrated digital platform combining electromagnetic optimization design, parametric modeling, performance analysis, structural optimization, and automatic drawing generation. It enables efficient resource sharing, along with advanced data management including search, modification, and version control.

Simulation Analysis

Simulation Analysis

Advanced multi-physics simulation covering fluid dynamics, thermal field, electric field, leakage magnetic field, transient processes, and short-circuit forces. Each transformer series is optimized through thermal and flow analysis to accurately control winding temperature rise and hotspot distribution, ensuring superior performance and reliability.

Smart Operation & Maintenance Platform

Smart Operation & Maintenance Platform

Equipped with intelligent monitoring by collecting key data such as temperature, current, voltage, vibration, and grid harmonics. The system enables real-time power quality analysis, fault alarms, and supports mobile access for remote monitoring and smart O&M management.

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