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Low Frequency Power Inverters Series Inverters (DC-AC)

10 Models available

Low Frequency Power Inverters Inverters (DC-AC)

Images are for illustration purposes only

Low Frequency Power Inverters — 48V DC to AC Pure Sine Wave

Low-frequency power inverters convert 48V (or 24V) DC battery power to 220/230V AC with an isolation transformer, providing pure sine wave output and high surge capacity for motors and inductive loads. Rated 1–10 kW for off-grid and backup power.

Key Features

Low-frequency transformer-based design

Pure sine wave output

48V/24V DC input, 220/230V AC output

High surge capacity for motor starting

Galvanic isolation via output transformer

1–10 kW for off-grid and backup

Applications

  • Off-grid solar backup
  • 48V battery systems
  • Remote and mobile power
  • Motor and inductive loads

Specifications Range

All specifications and dimensions can be customized upon request

Model Selector

Key parametersModel Range
Capacity0.5–30 kW
Input voltageDC 12/24/48V
Output voltage220VAC 50Hz pure sine
WaveformPure sine wave
Frequency (Hz)50/60
Efficiency>85%
ProtectionOver-load, short-circuit, over-temperature, low-voltage
Select 2-3 models to compare
CompareModelSeriesPower (W)Input voltageOutput voltageFrequency (Hz)WeightDimensions
LFI-0.5KVALow Frequency Power Inverters0.5kVADC 12/24/48V220VAC 50Hz pure sine50/6015 kg435×305×180 mm
LFI-1KVALow Frequency Power Inverters1kVADC 12/24/48V220VAC 50Hz pure sine50/6018 kg440×305×185 mm
LFI-2KVALow Frequency Power Inverters2kVADC 12/24/48V220VAC 50Hz pure sine50/6022 kg445×310×185 mm
LFI-3KVALow Frequency Power Inverters3kVADC 12/24/48V220VAC 50Hz pure sine50/6027 kg450×315×185 mm
LFI-5KVALow Frequency Power Inverters5kVADC 12/24/48V220VAC 50Hz pure sine50/6035 kg460×320×190 mm
LFI-7.5KVALow Frequency Power Inverters7.5kVADC 12/24/48V220VAC 50Hz pure sine50/6045 kg470×325×195 mm
LFI-10KVALow Frequency Power Inverters10kVADC 12/24/48V220VAC 50Hz pure sine50/6054 kg480×335×200 mm
LFI-15KVALow Frequency Power Inverters15kVADC 12/24/48V220VAC 50Hz pure sine50/6071 kg490×345×205 mm
LFI-20KVALow Frequency Power Inverters20kVADC 12/24/48V220VAC 50Hz pure sine50/6088 kg505×350×210 mm
LFI-30KVALow Frequency Power Inverters30kVADC 12/24/48V220VAC 50Hz pure sine50/60120 kg525×365×220 mm

Product Drawing

Electrical Equipment - LFI-7.5KVA

APPEARANCE — CABINET
POWERDC → AC INVERTERDC INAC OUTLFI-7.5KVA
SCHEMATIC — DC→AC H-BRIDGE
INVERTER — DC → ACDC IN+−IGBT H-BRIDGEFILTERAC OUTLFI-7.5KVA
OUTPUT WAVEFORM — SINE vs MODIFIED
OUTPUT WAVEFORM COMPARISONpure sinemodifiedVtimeLFI-7.5KVA
SYSTEM TOPOLOGY — PV/DC TO AC
STRING INVERTER — SYSTEM TOPOLOGYPV / DCMPPTDC/DCDC/ACAC OUT (grid / load)MPPT boost → DC link → H-bridgeLFI-7.5KVA

Note: This is a general product illustration. For detailed technical drawings and specifications, please contact our engineering team.

Selection Guide

1

Input voltage

Match the 48V/24V battery bank voltage.

2

Surge

Confirm surge capacity for motor and inductive starting loads.

- Frequently Asked Questions

What is a low-frequency inverter?

A low-frequency inverter uses a transformer-based design giving pure sine wave output and high surge capacity, suited to motor and inductive loads from 48V battery banks.

Why low-frequency over high-frequency?

Low-frequency inverters handle high surge (motor starting) currents and inductive loads better than high-frequency designs.

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