48VDC-380VAC 20KW Low Frequency Inverter from China Suppliers | Factory Direct Pure Sine Wave Solution

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Input Characteristics

Rated DC input voltage of 48V, supporting an ultra-wide voltage range (e.g., 42V–100V or customised range), capable of adapting to extremely low voltage scenarios as low as 42V, ensuring stable output even under battery under-voltage conditions.

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Output Characteristics

Rated output power 20kW, output voltage 380VAC (three-phase), frequency adjustable 50Hz/60Hz, pure sine wave output (THD ≤3% for linear loads), dynamic response time ≤50ms, power factor ≥0.99, efficiency ≥88%.

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Line-Frequency Transformer

Utilises a line-frequency isolation transformer to achieve complete AC/DC isolation, effectively suppressing harmonic interference and enhancing system surge resistance. Supports inductive loads such as motors and water pumps (e.g., automatic recovery after 10 seconds at 115% overload).

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Ultra-Low Voltage Input Capability

Through wide voltage input design (e.g., 42V–100V) and intelligent boost technology, it ensures full power output even during deep battery discharge or fluctuating PV input, preventing shutdowns caused by insufficient voltage.

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Electromagnetic Compatibility (EMC) Design

Shielded enclosure and optimised grounding, certified to CE (EMC/LVD) standards, meeting industrial-grade anti-interference requirements.

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Dynamic Current-Loop Control with SVPWM Algorithm

Reduces switching noise and suppresses harmonic distortion to ensure pristine output waveforms.

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Multi-Layer Protection Mechanisms

Input over/under-voltage, output overload/short-circuit, overtemperature, fan failure, and lightning protection. Supports RS485/CAN communication interfaces for remote monitoring.

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High Reliability & Durability

Utilises IPM smart modules (e.g., Mitsubishi 6th generation IPM) and power frequency topology, supporting operation across -25°C to 50°C with altitudes ≤3000m (derating required). Service life extends to 15 years. Modular design facilitates maintenance.

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What is the input voltage range of the BZP-20KW inverter?

The BZP-20KW supports a rated DC input voltage of 48V with an ultra-wide voltage range (e.g., 42V–100V or a customised range). This allows the inverter to operate reliably even under deep battery discharge or fluctuating solar PV input conditions, with a minimum operable voltage as low as 42V.

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What type of output does the BZP-20KW provide, and is it suitable for motor loads?

The inverter delivers a pure sine wave output at 380VAC (three-phase, 4-wire) or 220VAC (single-phase), with a THD of less than 3% under linear loads. It is fully compatible with inductive loads such as motors, water pumps, and compressors, supported by the line-frequency isolation transformer design.

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What protection features are built into the BZP-20KW?

The BZP-20KW includes comprehensive multi-layer protection: input reverse polarity protection, input under/over-voltage protection, output over-current protection, short-circuit protection (manual restart required), overtemperature protection, fan failure detection, and lightning surge protection. It also supports RS485 communication for remote monitoring.

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What are the operating environment requirements for the BZP-20KW?

The inverter is rated for indoor use (IP20) and operates within a temperature range of -25°C to +55°C, at altitudes up to 2,000 metres, and in relative humidity of 0–90% (non-condensing). It produces less than 50dB of noise at 1 metre distance and is cooled by an integrated fan system.

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How efficient is the BZP-20KW and what is its expected service life?

The BZP-20KW achieves a conversion efficiency of over 88% and a power factor of 0.9. Built with Mitsubishi 6th generation IPM smart modules and a power frequency topology, the unit is designed for a service life of up to 15 years. Its modular design also makes maintenance and component replacement straightforward.

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What certifications does the BZP-20KW hold and can it be customised?

The BZP-20KW is certified to CE (EMC/LVD) standards, meeting industrial-grade electromagnetic compatibility requirements. The input voltage range can be customised to suit specific project needs. Communication interfaces (RS485/CAN) are available as optional add-ons for integration into remote monitoring systems.