Description
Rated Power
125 kW
Capacity
261 kWh
Max. Efficiency
≥ 88%
(PCS ≥ 98.5%)
DC Voltage
728–936 V
Protection
IP55
PACK IP67
Communication
Modbus TCP/RTU
IEC 104 • MQTT
⚙️ Technical Architecture
The PS-ESS125/261 integrates battery PACK, BMS, PCS, EMS, liquid-cooling unit and fire suppression into a single outdoor cabinet. Footprint ≤ 1.3 m2, supporting up to 10 cabinets in parallel (261 kWh – 2610 kWh elastic expansion). Battery-side liquid cooling + PCS intelligent air cooling ensures cell temperature difference ≤ 5°C. The system operates in both grid-connected and island modes with seamless transfer < 20 ms, providing UPS function for critical loads.
🎯 Application Positioning
Designed for 0.4 kV low-voltage distribution grids facing “source-load reconstruction” — massive distributed PV, EV chargers and high-fluctuation industrial loads. The Rock Series solves reverse overload, voltage violations, three-phase imbalance and costly transformer upgrades. It transforms distribution substations from passive load endpoints into active value centers with IRR of 15%–25%.
Six Breakthroughs • Redefining Substation Energy Storage
🔌
Plug & Play Integration
All-in-one cabinet with battery, BMS, PCS, EMS, cooling and fire system. Footprint ≤ 1.3 m2, 10‑cabinet parallel expansion.
🌊
Precise Liquid Cooling
Battery-side liquid + PCS smart air cooling. Cell ΔT ≤ 5°C. 6000 cycles @ 25°C, 0.5P. IP55 whole system, PACK IP67.
🛡️
PACK‑Level Fire Safety
PACK-level (temp/CO) + cabin 5‑in‑1 detector (temp/smoke/CO/H₂/VOC). Perfluorohexanone precision discharge + water fire interface预留.
🧠
Self‑Developed EMS
Peak shaving, demand management, anti‑reverse, load tracking, dynamic expansion, three‑phase balancing. 7×24 h cloud O&M with active fault alerts.
⚡
Seamless Island Switching
Grid‑connected / island dual mode. Transfer < 20 ms. Island mode as voltage source for UPS of critical loads.
🌍
Extreme Environment Ready
Operating temp –20°C to +50°C. Corrosion class C4‑M. Altitude ≤ 2000 m (derating to 4000 m). Noise < 70 dB.
Technical Specifications • PS-ESS125/261
Custom variants available: 105 kW / 241 kWh • parallel up to 1250 kW / 2610 kWh
Application Areas
⚡
Substation Overload Management
Auto‑discharge when transformer load > 85%
☀️
PV Integration + Anti‑Reverse
Charge at valley, discharge at peak; zero power export
⚖️
Three‑Phase Balancing
Per‑phase compensation, voltage stability, loss reduction
🔋
Emergency Backup / UPS
< 20 ms island switching for critical loads
📊
Peak Shaving & Demand Management
Tariff arbitrage + demand charge reduction
Electrical Topology • AC‑Side Parallel + Independent Battery Clusters
AC Grid • 400 V
↓
Bidirectional PCS • 125 kW
↓
LFP Battery Cluster • 261 kWh
🔵 Charging: Grid → PCS → Battery
🔴 Discharging: Battery → PCS → Grid
🔴 Discharging: Battery → PCS → Grid
Secondary BMS architecture • cell‑level precision
🛡️ Protection & Safety
Over Voltage Protection
Over Current Protection
Thermal Protection
Short Circuit Protection
EMC Compliance
PACK‑Level Fire Suppression
🔧 Maintenance & Service
📋 Routine Maintenance
Scheduled inspections, coolant level check, air filter cleaning, firmware updates via remote O&M platform.
🛠️ Troubleshooting
Remote diagnostic tools, event log analysis, proactive fault alerts. 2 h response, 24 h on‑site.
📞 Technical Support
6 regional service centers + 20+ stations. 3‑year core component warranty (extendable to 5 years).
❓ Frequently Asked Questions
What applications does the PS-ESS125/261 support?
Substation overload management, PV integration with anti‑reverse, three‑phase balancing, emergency backup/UPS, and peak shaving with demand management.
Does IMAXPWR provide customized solutions?
Yes. Custom variants include 105 kW / 241 kWh, special voltage levels, and protocol customization. Parallel expansion up to 1250 kW / 2610 kWh.
What is the cycle life and warranty?
6000 cycles @ 25°C, 90% DOD, 70% EOL. 3‑year core warranty extendable to 5 years.
How fast is grid‑to‑island switching?
Transfer < 20 ms, ensuring uninterrupted power for critical loads during grid faults.
What communication protocols are supported?
Modbus TCP/RTU, IEC 104, and MQTT for seamless integration with SCADA and EMS.
What is the expected ROI?
IRR typically ranges from 15% to 25%, driven by tariff arbitrage, demand charge reduction, and deferred transformer upgrades.
Is it suitable for harsh environments?
Yes. Operating temp –20°C to +50°C, corrosion class C4‑M, altitude ≤ 2000 m (derating to 4000 m), noise < 70 dB.
How does IMAXPWR ensure quality and safety?
Full‑process quality management, PACK‑level fire suppression, multi‑level BMS, and compliance with international standards.
Related Products
🔋
V2G Bidirectional PCS
15–250 kW, high‑frequency isolation
⚡
DC/DC Converter
5–20 kW, bidirectional isolated
🌞
Hybrid PV‑Storage Inverter
Grid‑forming, AC/DC coupling
🏭
C&I BESS
30 kW – 2 MW+ integrated solutions
About IMAXPWR
ImaxPWR (Imax Power Technology Co., Ltd.) is a national high‑tech enterprise specializing in new energy solutions. As an original equipment manufacturer, we provide integrated energy storage products and system solutions covering bidirectional PCS, DC/DC converters, energy management systems and energy storage cabinet integration. Driven by technology innovation and quality control, ImaxPWR supports global customers in grid, microgrid, renewable energy and charging infrastructure applications with reliable and customized energy solutions.
Phone
+86-13760212825
Email
info@imaxpwr.com
Company
Imax Power Technology Co., Ltd.
Web
www.imaxpwr.com
