Marine Power Inverter
20KW 48VDC-380VAC Three-Phase Inverter – China Suppliers & Factory with Pure Sine Wave Output and High Efficiency
Introducing our high-performance 48VDC-380VAC mains frequency inverter, designed to deliver a robust 20kW output. This product employs advanced mains frequency transformer isolation, ensuring a pure sine wave output with total harmonic distortion (THD) of 3% or less. With an impressive input voltage capability ranging from 42V to 100V, this inverter is engineered for versatility and reliability. It features an anti-interference design along with multiple protection functions, achieving an efficiency rating of 88% or higher. Ideal for industrial equipment and renewable energy systems, our inverter is manufactured in China, supplied directly from our factory, and perfect for various demanding applications. Choose our inverter for superior performance and dependability in your projects
DC input: 48V
AC output: Single phase,Split phase or 3 phase
Output power: 20KW
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Rated Output Power
20 kW
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DC Input Voltage
48V DC
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AC Output Voltage
380VAC (3-Phase)
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Efficiency
≥ 88%
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Output Waveform
Pure Sine Wave
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Isolation
Low-Freq. Transformer
⚙️ Input & Output Characteristics
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Input Characteristics
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
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
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).
🚀 Advanced Features & Reliability
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Ultra-Low Voltage Input Capability
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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Anti-Interference Design
Anti-Interference Design
Electromagnetic Compatibility (EMC) Design: Shielded enclosure and optimised grounding, certified to CE (EMC/LVD) standards, meeting industrial-grade anti-interference requirements.
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
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
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.
📋 Technical Specifications — Model: BZP-20KW
| Model | BZP-20KW | |||
| Isolation Mode | Low Frequency Transformer | |||
| DC Input | Rated Voltage (Vdc) | 48V | ||
| Rated Current (A) | 416A | |||
| AC Output | Rated Output Power | 20KW | ||
| Output Waveform | Pure Sine Wave | |||
| Rated Voltage | 220V ±3% | 380VAC ±3% | ||
| Phases | Single Phase | 3 Phase 4 Wire | ||
| Rated Current (A) | 90.9A | 30A (phase current) | ||
| Frequency | 50Hz or 60Hz | |||
| Power Factor (PF) | 0.9 | |||
| Overload Ability | 120%, 35 seconds | |||
| Efficiency | >88% | |||
| Waveform Distortion Rate (THD) | <3% (Linear Load) | |||
| Dynamic Response (0 to 100% Load) | 5%, ≤50ms | |||
| Display | LCD | |||
| Running Mode | Working Continuously | |||
| Electrical Insulation Properties | 2000Vac, 1 Minute | |||
| Communication Interface (Optional) | RS485 | |||
| Protection Function | Protection | Input reverse polarity, under voltage, overvoltage, output over-current, short circuit, overheating etc. | ||
| Cooling Method | Fan-Cooled | |||
| Short-Circuit Protection | No automatic recovery, need to restart the machine | |||
| Working Environment | Noise (1 Meter) | ≤50dB | ||
| Degree of Protection | IP20 (Indoor) | |||
| Working Altitude (m) | ≤2000 | |||
| Working Temperature | -25 ~ +55℃ | |||
| Relative Humidity | 0~90%, Non-Condensing | |||
| Mechanical Dimension | Depth × Width × Height | 550 × 550 × 860 mm | ||
| Weight (Kg) | 186 Kg | 210 Kg | ||
❓ Frequently Asked Questions
Q 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 input voltage range of 42V–100V (or customised range). This allows the unit to operate reliably even during deep battery discharge or fluctuating solar PV input conditions.
Q What type of AC output does the BZP-20KW provide?
The inverter outputs a pure sine wave at 380VAC (three-phase, 4-wire) or 220VAC (single-phase), with a selectable frequency of 50Hz or 60Hz. The total harmonic distortion (THD) is less than 3% under linear loads, making it suitable for sensitive equipment.
Q What kind of loads can the BZP-20KW drive?
Thanks to its low-frequency isolation transformer and robust overload capability (120% for 35 seconds), the BZP-20KW is well-suited for inductive loads such as motors, water pumps, compressors, and other industrial equipment. It supports automatic recovery after 10 seconds at 115% overload.
Q What protection features are built into the BZP-20KW?
The unit includes multi-layer protection covering input reverse polarity, under-voltage, over-voltage, output over-current, short-circuit, overtemperature, and fan failure. Note that short-circuit protection does not auto-recover — the machine must be manually restarted. Lightning protection is also included.
Q What are the operating environment requirements?
The BZP-20KW operates in temperatures ranging from -25°C to +55°C, at altitudes up to 2000m (derating required above this), and in relative humidity of 0–90% (non-condensing). It is rated IP20 for indoor use and produces noise levels of ≤50dB at 1 metre.
Q Does the BZP-20KW support remote monitoring or communication?
Yes. The BZP-20KW supports RS485 communication interface (optional) for remote monitoring and integration with energy management systems. It is also compatible with CAN bus interfaces, enabling real-time status reporting and fault diagnostics.
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