C PlusX Series 11 kW Single Phase Off Grid Inverter

The C PlusX 11K is a high-capacity single-phase off-grid inverter designed for professional standalone and weak-grid energy systems. It combines 11 kW continuous output, 22 kVA surge capacity, a 48 V battery architecture, and dual PV input allocation with up to 13 kW of connected PV power.

Dual AC inputs support utility and generator sources, while dual AC outputs allow essential and optional loads to be managed separately. This architecture is suitable for facilities where critical equipment must remain prioritised while discretionary loads are controlled according to available solar generation, battery condition, or backup-source availability.

The platform supports parallel operation of up to six units, enabling engineered capacity expansion. Built-in Wi-Fi, BMS communication, a 2.8-inch colour LCD, USB On-The-Go functionality, dry contact, BTS support, and a current-transformer input provide monitoring and energy-management capability for complex systems.

The official technical table lists a built-in current-transformer sensor, while the product-feature wording refers to an external CT sensor. The final CT supply and installation arrangement should therefore be confirmed at quotation stage. Optional GFCI, rapid-shutdown, and AFCI functions must also be specified according to the project and applicable electrical requirements.

Key Features

• 11000 VA / 11000 W rated output
• 22000 VA surge capacity
• Pure sine-wave single-phase output
• Dual utility/generator AC inputs
• Dual AC outputs for priority-load management
• 13000 W dual PV-array capacity
• MPPT operating range of 90-450 V DC
• Maximum charging current of 150 A
• Parallel operation of up to six units
• Wi-Fi, BMS, dry-contact, BTS, and CT integration

Recommended Applications

• Large standalone houses and rural estates
• Farms, agricultural service buildings, and workshops
• Remote clinics, schools, and community buildings
• Commercial premises in unreliable-grid areas
• Priority-load systems with generator support
• Facilities requiring high single-phase surge capacity
• Expandable multi-inverter off-grid systems
• High-throughput 48 V battery installations

Engineering and Selection Notes

• Parallel operation requires a coordinated electrical design, compatible communication arrangement, common protection philosophy, and balanced battery/PV configuration.
• Verify that the 48 V battery bank can accept the configured charge current and supply the inverter's continuous and surge demand.
• Divide the PV array between the two input paths within the 6500 W x 2 allocation and the stated voltage/current limits.
• Define priority and optional loads before commissioning the dual-output logic.
• Confirm CT configuration and any optional GFCI, rapid-shutdown, or AFCI requirements during quotation.
• Generator sizing must consider inverter charging demand and facility loads that may operate simultaneously.