Low-voltage off-grid storage systems

SR-IB Series 10–40 kW Scalable Commercial Off-Grid System

The SR-IB Series scales multiple 5 kW/51.2V inverter units into 10–40 kW commercial off-grid configurations. Inverter quantity, battery-bank quantity, dimensions and weight are selected around the project.

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SR-IB Series Hybrid Solar Power Generation SystemSR-IB Series Hybrid Solar Power Generation System
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Project supply details

SR-IB Series Hybrid Solar Power Generation System for solar energy storage and project supply.

Suitable for solar storage projects, off-grid backup and distributor project supply.

Model Range
SR-IB Series
Inverter type
5 kW / 51.2V per inverter
Rated output power
10KW
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SR-IB Series System Applications

SR-IB Series hybrid solar power generation system application diagram
Application and connection overview for project planning. Final configuration depends on the selected model and project requirements.

Information Needed for SR-IB System Configuration

  • Target total output and equipment starting loads
  • Preferred battery capacity or required backup objective
  • PV, grid or generator input conditions
  • System quantity, installation environment and delivery destination
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Scalable Off-Grid Architecture for Commercial Projects

  • Multiple 5 kW/51.2V inverter units support 10–40 kW project configurations.
  • Pure sine wave output with 230VAC 50Hz as the listed standard configuration.
  • Current battery options include 51.2V 106–300Ah modules in project-sized banks.
  • Product dimensions and weight are determined by the selected inverter and battery configuration.

Commercial Applications for the SR-IB Series

  • Shops, offices and service businesses
  • Farms and weak-grid project sites
  • Community facilities and multi-circuit backup projects

Core specifications

Model RangeSR-IB Series
Inverter type5 kW / 51.2V per inverter
Rated output power10KW
Output waveformPure sine wave
System configuration

SR-IB Series Hybrid Solar Power Generation System technical details

System Configuration

Model
SR-1B-10K20B / SR-1B-10K30B / SR-IB-15K30B / SR-IB-15K40B / SR-IB-20K40B
Model 2
SR-IB-20K60B / SR-IB-30K60B / SR-IB-30K80B / SR-IB-40K80B / SR-IB-40K100B
Inverter type
5 kW / 51.2V per inverter
Rated output power
10KW
Output waveform
Pure sine wave
Output voltage
230 VAC 50 Hz; 3 sets in parallel can provide 220V or 380V
Low DC warning voltage
44.8Vdc
Low DC cut-off voltage
43.2Vdc
Low DC warning recovery voltage
44.8Vdc
Total charging current (grid + solar)
Maximum 200A
Bulk charging voltage
58.6Vdc
Float charging voltage
57.6Vdc
Standard battery moduleA
51.2V106-150Ah*(3-20sets)
Standard battery moduleB
51.2V200-300Ah*(3-20sets)
Nominal battery voltage
51.2Vdc
Maximum charging current
100-200A
Maximum discharge current
100-200A
Operating voltage range
44.8Vdc~58.4Vdc
Cycle life
>8000 cycles80%DOD 25C
Operating temperature
-23C~+65C
Nominal input voltage
230 Vac, configurable: 208/220/230/240 Vac
Input voltage range
90-280V
Frequency range
40~70HZ,default
Main topology
L+N+PE
Minimum input voltage
90Vac
Maximum input voltage / AC input voltage
280Vac
Rated current (RMS)
45A
Maximum current (RMS)
Maximum 50A
Nominal PV voltage
450Vdc
PV array MPPT voltage range
120Vdc~450Vdc
Maximum open-circuit voltage
550Vdc
Solar charging current
Maximum 100A per inverter
Product dimensions (mm)
Based on the customer's actual configuration
Weight (kg)
Based on the customer's actual configuration
Protection
Over-charge, over-discharge, over-current, short-circuit and over-temperature protection
Noise (dB)
<40 dB at <30C (1 m)
Operating temperature 2
-23C~+65C
Humidity
0-95% (non-condensing)
Altitude (m)
<6000
Efficiency
92.0%
Warranty
5 years

Questions before quotation

Why is the SR-IB Series suitable for 10–40 kW projects?

The system combines multiple 5 kW/51.2V inverter units, allowing project output to scale with the selected configuration.

Is the SR-IB battery capacity fixed?

No. Current specifications list 51.2V battery modules from 106Ah to 300Ah in banks of 3–20 sets, subject to project design.

Why are dimensions and weight configuration-dependent?

The enclosure and total mass change with the number of inverter and battery units, so they can only be confirmed after system selection.

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