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Off-Grid Backup Power 50kW Industrial Commercial Energy Storage System

Off-Grid Backup Power 50kW Industrial Commercial Energy Storage System

Off-Grid Energy-Storage

PXU-C empowers manufacturers to manage high electricity costs and maintain uninterrupted production.

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● PXU-C empowers manufacturers to manage high electricity costs and maintain uninterrupted production.

● The system stores power during off-peak hours and releases it when demand peaks, effectively reducing monthly energy bills.

● Its 20 ms seamless transfer and natural cooling design guarantee reliable performance even under 24/7 operation.

 

Application Scenarios

For Industrial Facilities & Manufacturing Plants

Pain point: High energy costs and production losses during power outages.

Solution: PXU-C stores electricity during low demand periods and releases electricity during peak periods. Stores energy during off-peak hours and discharges during high tariff periods to reduce bills. PXU-C adopts a hybrid inverter and supports multiple power sources: diesel generators, photovoltaics, and power grids. When encountering a sudden power outage, it can ensure the continuous operation of critical equipment and provide millisecond level backup power support. When necessary, diesel power generation can serve as the last resort.

 

Technical Specifications

Item Specification
Technical Parameter PXU-C
Rated Power / Capacity 50 kW / 109 kWh
Battery Type CATL LiFePO₄ (306Ah)
System Architecture All-in-One: Hybrid Inverter + MPPT + Battery
Max. PV Input Power 96 kW
Cycle Life ≥10,000 Cycles
On/Off-Grid Transfer Time ≤20ms (Seamless)
Battery Cooling Natural Cooling (IP67 Module)
System Protection IP54 (System), IP67 (Battery Module)
Corrosion Protection C4 Standard (C5 Optional)
Dimensions (L×W×H) 1270×1340×2094mm
Weight ≈ 1.8T
Certifications EN 50549-1, EN 50549-10, VDE-AR-N 4105, NRS 097-2-1, IEC 61000, IEC 62477, IEC 62619, IEC62109, UN 38.3


Brand & Competitive Advantages

Ultra-Fast

Switching Transfers between grid and off-grid modes within 20 ms, ensuring uninterrupted power supply for critical loads.

 

High Conversion Efficiency

PCS efficiency up to 98% reduces loss and maximizes usable energy.

 

CATL 306 Ah LFP Cells

Industry-leading LiFePO₄ cells provide ≥ 10 000 cycles and 15-year lifetime.

 

Wenzhou Pengxu Trading Co., Ltd. is among the trusted energy storage system manufacturers and solution providers for global markets.

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Frequently
Asked Questions

  • What is an Energy Storage System (ESS)?

    An Energy Storage System (ESS) is a technology or set of technologies designed to capture, store, and release electrical energy (or energy in other forms that can be converted to electricity) on demand. Its core purpose is to address the temporal and spatial mismatches between energy supply and demand—for example, storing excess energy generated during low-demand periods (e.g., midday solar production) and releasing it during high-demand periods (e.g., evening peak usage) or when supply is limited (e.g., nighttime wind lulls).

  • What are the core functions of ESS?

    ESS solves critical challenges in modern energy systems by performing five key roles:
    Peak Shaving: Reduces reliance on expensive "peak power plants" (which only operate during high-demand hours) by releasing stored energy during peak periods. This lowers electricity costs for users and grid stress. 
    Load Leveling: Smooths out fluctuations in energy supply (e.g., variable output from solar/wind) by absorbing excess energy when production is high and discharging when production drops. 
    Backup Power: Provides emergency electricity during grid outages (e.g., residential battery systems for blackouts, hospital backup ESS). 
    Grid Stabilization: Maintains grid reliability by regulating frequency (frequency response) and voltage—critical for integrating high shares of renewable energy, which can cause sudden supply swings. 
    Renewable Integration: Enables more solar and wind power to be used (instead of wasted, or "curtailed") by storing surplus energy that would otherwise exceed immediate demand.

  • What’s the Core Components of ESS?

    Battery Cells and Modules: The main energy storage units, typically based on lithium-ion chemistries such as LFP for safety and longevity.
    Battery Management System (BMS): Ensures balanced voltage and temperature across cells for optimal safety. 
    Power Conversion System (PCS/Inverter): Converts energy between DC and AC for smooth integration with loads or grids. 
    Energy Management System (EMS): Acts as the “brain” — optimizing operation, predicting consumption, and maximizing ROI. 
    Thermal & Fire-Safety Systems: Maintain safe temperature levels and comply with UL/IEC standards.

  • How Energy Storage Systems Work?

    Charging: Energy source (grid/photovoltaic/wind power) → AC → PCS (rectification) → DC → energy storage medium (storage)
    Control: EMS (decision-making)+BMS (protection) → full process linkage PCS/energy storage medium
    Discharge: energy storage medium (release) → DC → PCS (inverter) → AC → energy destination (grid/load/emergency)
    Guarantee: Auxiliary system (cooling/fire protection) → Full process safety guarantee
    Core closed-loop: AC ↔ PCS ↔ Energy storage medium ↔ PCS ↔ AC (EMS/BMS+auxiliary system escort)

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