Off-grid Hybrid Inverter OCE-N6K-48

OCE-N6K-48 6kW 48V Off-Grid Hybrid Solar Inverter

The Ocean Solar OCE-N6K-48 is a 6kW 48V hybrid solar inverter designed for residential backup power, off-grid solar systems and small commercial energy applications. It integrates an MPPT solar charger, battery charger, pure sine wave inverter and UPS transfer function into one compact unit.

The inverter supports up to 9000W of PV input, a wide 60-450VDC MPPT operating range and a maximum PV open-circuit voltage of 500VDC. With up to 120A PV charging, 120A AC charging and 48V lithium or lead-acid battery compatibility, it provides flexible energy management for solar and battery storage systems.

For backup applications, the OCE-N6K-48 provides 6kW continuous AC output, up to 12kVA surge power, pure sine wave output and a 10ms transfer time in APP/UPS mode. Built-in WiFi and RS232, RS485 and CAN communication interfaces support local and remote system monitoring.

OCE-N6K-48 Key Specifications

Why Choose the OCE-N6K-48 6kW Hybrid Inverter?

9000W Maximum PV Input

The OCE-N6K-48 supports up to 9000W of connected photovoltaic input for a 6kW inverter output. This allows system designers to configure a larger PV array while matching the final string voltage and current to the inverter's electrical limits.

Wide 60-450V MPPT Operating Range

The built-in MPPT solar charger operates across a wide 60-450VDC range, with a maximum PV open-circuit voltage of 500VDC. This provides flexibility when configuring compatible PV module strings for residential and small commercial systems.

120A Fast Battery Charging

Maximum PV charge current is 120A, and maximum AC charge current is also 120A. The combined PV and AC charging limit is 120A, allowing the system to charge a compatible 48V battery bank from solar energy or utility power according to the selected operating configuration.

12kVA Surge Power

In addition to its 6kW rated output, the inverter provides up to 12kVA surge power. This gives the system additional short-duration starting capability for compatible appliances and loads with higher startup demand.

10ms UPS Transfer

The OCE-N6K-48 specifies a transfer time of 10ms in APP/UPS mode and 20ms in GEN mode. This fast switching capability is designed for backup systems where continuity of power to selected loads is important during changes in the available power source.

Pure Sine Wave AC Output

Pure sine wave output provides a standard AC waveform for compatible household appliances, electronics, lighting and other loads used in residential and small commercial backup systems.

48V Lithium and Lead-Acid Battery Compatibility

The OCE-N6K-48 is designed for a 48VDC battery system and supports both lithium and lead-acid battery types. The specified floating charge voltage is 54VDC and overcharge protection voltage is 61VDC.

For lithium battery installations, battery voltage, charging limits and BMS communication compatibility should be confirmed before commissioning. The inverter provides RS232, RS485 and CAN communication interfaces for compatible system integration.

AC Input and Output Specifications

PV and MPPT Charger Specifications

Built-In WiFi and Smart Monitoring

The inverter includes an LCD human-machine interface for local status and operating information. Built-in WiFi provides a convenient option for smart monitoring, while RS232, RS485 and CAN interfaces support communication with compatible battery and energy-management equipment.

Protection and Operating Environment

The OCE-N6K-48 includes protection functions for the inverter, charging system and connected loads. Its IP21 enclosure rating means it is intended primarily for protected indoor installation rather than direct outdoor exposure.

Typical Applications

Home Solar Battery Backup

The 6kW output and 48V battery architecture make the OCE-N6K-48 suitable for residential solar-plus-storage systems supplying selected household appliances, lighting, networking equipment and other backup loads.

Off-Grid Homes and Cabins

With integrated PV charging, battery charging and inverter functions, the unit can form the core of an off-grid solar system for houses, cabins and remote properties where stored solar energy is required for nighttime and low-sun operation.

Small Commercial Backup Systems

Small offices, retail spaces and other light commercial sites can use the inverter to support appropriately sized critical loads during utility interruptions. Actual backup capacity depends on connected load and battery capacity.

Solar Systems with Generator Backup

The specification includes a GEN transfer mode with a 20ms switching time. System wiring, generator sizing and operating configuration should be completed according to the installation requirements of the inverter and generator.

How to Size Solar Panels for the OCE-N6K-48

The inverter supports up to 9000W of PV input, but PV string design should not be based on wattage alone. Installers must also ensure that total open-circuit voltage remains below 500VDC and that normal operating voltage remains within the 60-450VDC MPPT range.

Maximum PV input current is 27A. Module Voc, Vmp, Isc, Imp, temperature coefficient, local minimum temperature and the number of modules connected in series must all be checked before installation.

Installation Considerations

Because the enclosure is rated IP21, the inverter should be installed in a dry, protected and adequately ventilated indoor location. Do not install the unit where it is directly exposed to rain, excessive moisture or uncontrolled condensation.

Battery cables, PV wiring, AC protection devices and grounding should be sized for the actual system current and local electrical requirements. Installation and commissioning should be carried out by qualified personnel familiar with photovoltaic and battery energy-storage systems.

OCE-N6K-48 Dimensions and Packaging

OCE-N6K-48 Datasheet

                   Download OCE-N6K-48 6kW 48V Hybrid Inverter Datasheet        

Frequently Asked Questions About the OCE-N6K-48

Is the OCE-N6K-48 a 6kW or 3.6kW inverter?

The OCE-N6K-48 is a 6kW inverter. Its current technical datasheet specifies 6kW rated AC output and 12kVA surge power.

Does the OCE-N6K-48 use a 24V or 48V battery?

It is designed for a 48VDC battery system. The inverter supports lithium and lead-acid batteries.

How much solar PV can be connected to the OCE-N6K-48?

The maximum specified PV input power is 9000W. The PV array must also remain within the 27A input-current limit, 60-450V MPPT operating range and 500V maximum open-circuit voltage.

What is the maximum battery charging current?

Maximum PV charging current is 120A, maximum AC charging current is 120A and maximum combined PV plus AC charging current is 120A.

What is the maximum PV voltage?

Maximum PV open-circuit voltage is 500VDC. The MPPT operating range is 60-450VDC.

What is the UPS transfer time?

Transfer time is specified as 10ms in APP/UPS mode and 20ms in GEN mode.

Does the inverter provide pure sine wave output?

Yes. The OCE-N6K-48 provides pure sine wave AC output.

Does the OCE-N6K-48 have WiFi monitoring?

Yes. WiFi monitoring is built in according to the current product datasheet. The unit also provides RS232, RS485 and CAN communication interfaces.

Can the OCE-N6K-48 be installed outdoors?

The enclosure is rated IP21, so it should normally be installed in a protected indoor environment rather than directly exposed to rain or outdoor weather.

What is the maximum inverter efficiency?

The current specification lists maximum efficiency in battery mode as 94% at 48VDC.

Can several OCE-N6K-48 inverters be connected in parallel?

The current technical datasheet lists parallel quantity as NA. Parallel operation should therefore not be assumed unless Ocean Solar provides an updated specification confirming this function.

What is the warranty period for the OCE-N6K-48?

The current Ocean Solar product page lists a 5-year product warranty. Warranty conditions should be confirmed for the destination market and project before ordering.