BESS 125-271-240 (120) All-in-One Energy Storage System

Product Overview

The BESS 125-271-240 (120) is an all-in-one hybrid energy storage system integrating a 271 kWh LFP battery pack and a three-phase hybrid inverter. It supports grid-tied and off-grid operation with automatic transfer in under 10 ms.

The battery uses 314 Ah LFP cells in a 1P270S configuration with 864 V nominal voltage and 756-950 V operating range. Maximum charge and discharge current is 157 A. The inverter is available in 125 kW, 137.5 kW and 150 kW variants with 380/400 V, 440/460 V and 480 V output options.

Key Features

• All-in-one integrated design
• Modular architecture with optional module configurations
• Grid-tied and off-grid operation
• Optional MPPT solar charge controller
• IP54 fire-rated outdoor enclosure
• Patented air-duct design with dry self-cooling, 3-5 °C cell temperature difference
• 314 Ah LFP cells
• On/off-grid transfer time ≤10 ms
• 100% three-phase unbalanced output capability
• Maximum 5 units in parallel
• 271 kWh rated energy, 1P270S configuration
• 125/137.5/150 kW hybrid inverter options
• 240 kW PV input via two 120 kW channels
• 380/400 V, 440/460 V and 480 V output options
• IEC 61000-2/-4, IEC 62109, IEC 62619, EN 50549, CEI 016/021, UN38.3 certified

Technical Specifications

Battery Parameters

Nominal voltage	864 V
Cell configuration	1P270S
Rated capacity	314 Ah
Output voltage range	756-950 V
Rated energy	271 kWh
Maximum continuous charge current	157 A
Maximum continuous discharge current	157 A

AC Grid-Tied Parameters

Rated output power	125 kW / 137.5 kW / 150 kW
AC voltage	380/400 V, 440/460 V, 480 V (3P N/PE, 3P PE)
Rated current	181 A
Grid voltage range	-20% to +15%
Grid frequency range	50 Hz / 47-52 Hz (60 Hz / 57-62 Hz)
THDi	<3% (>30% load)
Power factor	-1 to 1

AC Off-Grid Parameters

Rated output power	125 kW / 137.5 kW / 150 kW
Maximum output power	137.5 kW / 151.1 kW / 165 kW
Rated voltage	380/400 V, 440/460 V, 480 V (3P N/PE, 3P PE)
Rated output current	181 A
Maximum output current	200 A
THDu	<3% (resistive load)
Three-phase unbalanced capability	100%
Frequency	50/60 Hz
Output overload (current)	110%-125%: 100 s; >125%: 300 ms

PV Input

Maximum power	240 kW (120 kW x 2)
Maximum PV voltage	900 V
MPPT voltage range	200-850 V
Maximum DC input current	50 A x 4 x 2
PV start-up voltage	250 V

General Parameters

Parallel operation	Maximum 5 units
Transfer time	≤10 ms
Dimensions (W × D × H)	2,120 × 1,470 × 2,230 mm
Weight	3,210 kg
Protection rating	IP54
Operating temperature range	-30 °C to +60 °C
Cooling	Dry self-cooling
Relative humidity	5-95% (non-condensing)
Maximum operating altitude	4,000 m (>2,000 m derating)
Certification	IEC 61000-2/-4, IEC 62109, IEC 62619, EN 50549, CEI 016/021, UN38.3

Applications

The BESS 125-271-240 (120) is designed for large commercial and industrial storage projects with high PV penetration and three-phase hybrid operation.

• Large commercial and industrial peak shaving
• Solar self-consumption with high PV ratio
• Backup power for critical three-phase loads
• Microgrid and parallel systems of up to 5 units

OEM & Custom Requirements

Project supply and private-label requirements can be confirmed against the standard BESS 125-271-240 (120) platform. Share the required inverter capacity, PV configuration and destination market.

• Private-label enclosure and documentation
• Inverter capacity and PV configuration options
• Manual localisation for the target market
• Packaging and delivery planning