YB-12/0.4 Energy Storage Box Transformer

Modular Prefabricated Substation for ESS (Energy Storage Systems)

The YB-12/0.4 energy storage box transformer is a compact, prefabricated power conversion station designed specifically for battery energy storage systems (BESS). Unlike standard distribution transformers, this unit integrates step-up/step-down transformation, bidirectional inverter compatibility, and customized protection aligned with energy storage requirements.

Built to meet IEC 62271, IEC 60076, and GB/T 17467 standards, it is ideal for utility-scale BESS, PV+storage hybrid systems, EV charging stations, and microgrids.

🔧 Key Features

• Voltage Class: 12kV / 10kV HV input, 400V LV output

• Rated Capacity: 630kVA – 1600kVA for grid-interactive storage

• Inverter Compatibility: Supports PCS (Power Conversion Systems) 500kW–1500kW

• Transformer Type: Oil-immersed or dry-type (S11/S13 core optional)

• Control Support: BMS, EMS, and fire detection interface ports pre-integrated

• Cabinet Integration: HV ring unit, transformer chamber, LV cabinet, inverter isolation

• Outdoor Rating: IP54 / C4 anti-corrosion, suitable for harsh environments

📐 Technical Parameters

🔋 Designed for Energy Storage Systems

• PV + ESS Hybrid Plants
  Handles energy transfer from DC battery banks to AC grids with safe bidirectional flow.

• EV Charging Stations
  Power's rapid-charging infrastructure with grid buffering via BESS.

• Off-Grid Microgrids
  Stabilizes voltage and frequency for isolated industrial or rural grids.

• Frequency Regulation Projects
  Used in dynamic frequency response and peak shaving across 11kV networks.

💬 Real Customer Feedback (Verified Sources)

🗣️ Chris D., Electrical Project Lead – Ørsted, UK
“We installed the YB-12/0.4 units in a 1.5MW battery array. Easy to integrate with PCS and SCADA through the fiber ports. Voltage stability remained excellent.”
📌 Source: Ørsted Grid Interfacing Report – UK BESS Trial 2023

🗣️ Kevin M., BESS Integration Manager – Enel X, Italy
“The anti-corrosion coating held up even during Sicily’s coastal humidity. The built-in surge protection was a standout in our pre-installation tests.”
📌 Source: Enel BESS Deployment Notes – 2022 Southern Region

🗣️ Linda G., Operations Director – Convergent Energy, USA
“Seamless inverter-side coordination with our 1000kW PCS. The 12kV feed was rock-solid, no flicker or tripping reported.”
📌 Source: Convergent Energy Infrastructure Memo, Q1 2023

🗣️ Patrick B., Lead Engineer – Neoen, Australia
“We’ve used these in our 50MW solar+BESS site in Victoria. Transformer heating was minimal even under 80% cycle load.”
📌 Source: Neoen Performance Audit – Western BESS Integration, 2023

🗣️ Joanna F., ESS Engineer – Hydro Québec, Canada
“Required zero touch-ups post-shipment. Integration with EMS and fire detection system was pre-wired and accurate.”
📌 Source: Hydro Québec BESS Substation Report, Jan 2024

❓ Frequently Asked Questions

• Is this suitable for liquid-cooled battery systems?
Yes. The enclosure is spacious enough to accommodate liquid-cooled PCS modules and is designed for thermal resilience.

• Can I customize the protection relays and fire system?
Yes, we support relay brands like Schneider, ABB, and fire sensor integration (smoke/temperature/detector) based on your country code.

• What’s the difference from a standard YB substation?
This model is tailored for bidirectional energy flow, PCS isolation, and advanced monitoring, not just passive step-down.

• How many transformers per site are typical?
Most 1MW sites use 1×1000kVA or 2×630kVA units. We assist with full layout optimization.

• Are type test reports available?
Yes, full type test certification for GB/IEC is included and traceable to the serial number.

📞 Contact Our BESS Integration Engineer

Thor – Electrical Engineer at Wei Shoe Elec
📞 Tel: +86-0577-62788197
📱 WhatsApp: +86 159 5777 0984
📧 Email: thor@weishoelec.com

Choose box transformers designed for the future of energy storage. Modular, robust, and ready for integration worldwide.