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The HWOO WP-5.5K-D is a reliable 5.5kW pure sine wave off-grid inverter designed for residential and commercial solar energy storage systems. It supports both PV and AC charging, with a 48VDC battery system, 5,500W PV input, and MPPT technology for efficient solar charging. With a wide 60–500VDC MPPT tracking range, up to 100A charging current, and 11,000VA peak power, the WP-5.5K-D provides stable and dependable power for off-grid and backup applications.

Key Features

The WP-5.5K-D delivers 5,500W rated power with a 220/230/240VAC output and Pure Sine Wave technology. Its peak power reaches 11,000VA, providing additional capacity for appliances and equipment with higher startup requirements.
The inverter supports a 5,500W maximum PV input with a 500VDC maximum PV voltage, 27A maximum PV input current, and a 60–500VDC MPPT tracking range. Its best MPPT working range is 360–430VDC, helping maintain efficient solar charging across different operating conditions.

Battery & Charging

The WP-5.5K-D operates with a 48VDC battery system and supports adjustable charging parameters, including 56.4VDC constant charging voltage and 54VDC float charging voltage. It supports PV and AC charging, with a maximum charging current of 100A.

Reliable Backup Power

The inverter provides an adjustable transfer time of 10ms for computer equipment and 20ms for household equipment, helping maintain stable power during source transitions. It also supports a wide AC input range of 90–280VAC ±3V in Normal Mode and 170–280VAC ±3V in UPS Mode.

LCD Display & Communication

The built-in LCD display provides information about the operating mode, load, input, and output. The WP-5.5K-D also includes RS232 communication and an expansion interface supporting lithium battery BMS communication and WiFi, allowing convenient monitoring and battery integration.

Compact & Reliable Design

The WP-5.5K-D operates from -10°C to 50°C, with a storage temperature range of -15°C to 60°C and 20%–95% non-condensing humidity. With a noise level of <50dB and compact dimensions of 465 × 310 × 146mm, it is suitable for residential and small commercial installations.

Suitable Applications

The HWOO WP-5.5K-D is suitable for residential off-grid solar systems, home backup power, solar-plus-battery installations, and small commercial energy storage applications. Its high PV input, 48V battery architecture, Pure Sine Wave output, and 100A charging capability make it a practical solution for reliable solar power and backup energy requirements.

Professional Solar Solutions by Essence Engineering

At Essence Engineering, we provide professional solar energy solutions including inverter selection, system sizing, solar installation, battery integration, commissioning, and technical support. The HWOO WP-5.5K-D 5.5kW Off-Grid Inverter offers a combination of reliable power output, efficient MPPT solar charging, battery support, and flexible communication for residential and commercial energy systems.
Essence Engineering — Professional Solar & Energy Solutions