GRANKIA HC1066EH48L is a 6.6kW single phase hybrid inverter solar solution with dual MPPT inputs (13.2kW PV Max), 48V battery architecture, 120A charge/discharge current, and ≤10ms transfer time. It supports up to 15 parallel units, IP65 protection, and IEC safety compliance. It delivers off-grid operation and grid-tied energy management for residential use.
What is HC1066EH48L 6.6kW Hybrid Solar Inverter?
The HC1066EH48L hybrid inverter solar system serves residential energy storage, backup power, and small commercial solar applications.
It combines:
- Solar PV input
- Battery energy storage
- Grid connection
- Generator backup
- Intelligent energy management
in a single compact wall-mounted unit.
Rated output power: 6.6kW. The inverter supports high-demand household loads and maintains power quality.
The transformerless topology reduces losses.
The MPPT algorithm extracts solar power.
The 48V battery architecture works with lithium-ion, gel, and lead-acid batteries.
Why Choose HC1066EH48L Hybrid Inverter Solar System?
Modern energy users require more than basic solar conversion.
They need:
- Higher PV utilization
- Reliable backup power
- Flexible battery compatibility
- Fast power switching
- Long-term outdoor durability
The HC1066EH48L hybrid inverter solar addresses these requirements through intelligent control technology and robust electrical design.
| Feature | Specification | User Value |
| Rated Output Power | 6.6kW | Supports high-power household appliances |
| Battery Voltage | 48VDC | Compatible with mainstream storage batteries |
| Maximum PV Input Power | 13.2kW | Allows oversized solar array design |
| MPPT Trackers | Dual MPPT | Better solar generation under shading conditions |
| Maximum Efficiency | 97.60% | Reduces energy losses |
| Protection Level | IP65 | Suitable for indoor and outdoor installation |
| Parallel Capability | Up to 15 units | Expandable power capacity |
| Transfer Time | ≤10ms | Reliable backup switching |
Key Features
6.6kW Rated Output Power
The HC1066EH48L single phase hybrid inverter solar delivers:
- Rated output power: 6600W
- Rated output current: 28.7A
- Single-phase output
- Pure sine wave waveform
The inverter provides stable AC power suitable for sensitive electronic equipment.
The output THDu is:
<2% under linear load
Power factor reaches:
>0.99 at rated power
(adjustable from 0.8 leading to 0.8 lagging)
Users can operate:
- Air conditioners
- Refrigerators
- Pumps
- Office equipment
- Home automation systems
with reliable electricity quality.
High Solar Input Capacity with Dual MPPT Technology
The inverter supports:
- Recommended maximum PV input power: 13.2kW
- Maximum PV voltage: 500VDC
- MPPT voltage range: 120VDC-425VDC
- Two independent MPPT trackers
PV input configuration:
| Parameter | Specification |
| MPPT Number | 2 |
| Strings per MPPT | 1 + 1 |
| Maximum PV Current | 18A + 18A |
| Maximum PV Short Circuit Current | 26A + 26A |
| Full Load MPPT Voltage | 370VDC-425VDC |
Dual MPPT technology allows two independent solar strings to operate separately.
This improves energy harvesting when:
- Roof orientations are different
- Partial shading occurs
- Solar panels have different operating conditions
Compared with single MPPT systems, dual MPPT designs provide better PV system flexibility.
The system can generate more usable solar energy throughout the day.
For homeowners, this means:
- Higher solar self-consumption
- Lower electricity bills
- Improved return on solar investment
The HC1066EH48L is therefore suitable as a 6.6kW solar hybrid inverter for home energy storage applications.
Intelligent On-Grid and Off-Grid Energy Management
The HC1066EH48L is designed as a flexible hybrid inverter solar platform that supports multiple energy operation modes.
It intelligently coordinates:
- Solar PV generation
- Battery storage
- Utility grid
- Backup generator
- Residential loads
The built-in energy management system automatically prioritizes available energy sources according to system conditions.
Parallel Expansion Capability for Larger Energy Systems
The HC1066EH48L supports parallel connection.
Maximum parallel quantity: Up to 15 units
Multiple inverter units can operate together to increase system capacity.
A single unit provides:
6.6kW output power
A 15-unit parallel system can theoretically reach:
99kW class power capacity
This scalability makes the inverter suitable for:
- Large residential buildings
- Small commercial facilities
- Farm energy systems
- Microgrid projects
Generator Compatible Hybrid Power Solution
The HC1066EH48L supports generator integration.
Compatible with:
- Diesel generators
- Gas generators
- Backup generators
Generator input provides additional energy security when:
- Solar resources are limited
- Battery capacity is insufficient
- Grid connection is unstable
The inverter manages multiple power sources automatically.
Users in remote or unstable grid areas can build a more reliable energy system.
Typical markets include:
- Rural areas
- Islands
- Developing regions
- Off-grid communities
Rugged IP65 Enclosure
Sealed fan-assisted cooling design rated for demanding indoor and outdoor deployment environments.
Advanced Protection System for Reliable Operation
Multi-Layer Electrical Protection
The HC1066EH48L integrates comprehensive protection functions.
| Protection Function | Technical Purpose |
|---|---|
| Battery Over/Under Voltage Protection | Protects battery safety |
| Battery Overcurrent Protection | Prevents excessive charging/discharging |
| PV Reverse Polarity Alarm | Protects PV input circuit |
| Grid Over/Under Voltage Protection | Maintains grid safety |
| Grid Over/Under Frequency Protection | Ensures stable operation |
| Output Short Circuit Protection | Protects connected loads |
| Overload Protection | Prevents inverter damage |
| Insulation Resistance Monitoring | Improves electrical safety |
| RCMU / Ground Fault Protection | Enhances user protection |
International Safety and EMC Compliance
The HC1066EH48L is designed according to recognized international standards.
Certified standards include:
- IEC 62109-1
- IEC 62109-2
- EN 62920
- IEC/EN 61000-6-1/3
- IEC/EN 61000-3-11/12
- IEC 62321
Technical Highlights
Key Specifications Overview
| Parameter | Specification |
| Solar Input (DC) | |
| Max. Recommended PV Power | 13.2 kW (6.6 kW / 6.6 kW) |
| Max. PV Input Voltage | 500 VDC |
| MPPT Voltage Range | 120 VDC – 425 VDC |
| Max. Input Current | 18A + 18A |
| AC Output (Load/Grid) | |
| Rated Output Power | 6.6 kW / 6.6 kVA |
| Nominal AC Voltage | 220VAC / 230VAC / 240VAC |
| Rated Output Current | 28.7 A |
| Peak Transfer Time | ≤ 10 ms |
| Battery Storage | |
| Battery Nominal Voltage | 48 VDC (40 – 60 VDC range) |
| Max. Charge/Discharge Current | 120 A |
| Battery Chemistry Support | Lithium-ion / Lead-acid / Gel |
HC1066EH48L vs Traditional Solar Inverter
| Parameter | Traditional Solar Inverter | HC1066EH48L Hybrid Inverter Solar |
| Battery Connection | Usually unavailable | 48V battery supported |
| Backup Function | Limited | ≤10ms backup switching |
| PV Tracking | Single MPPT common | Dual MPPT |
| Generator Support | Limited | Supported |
| Parallel Expansion | Rare | Up to 15 units |
| Outdoor Installation | Depends on enclosure | IP65 protection |
| Energy Management | Basic conversion | Intelligent multi-source control |
Self-Consumption / Zero Export Mode (Default Priority)
Daytime
Solar PV energy supplies household loads. Excess PV energy beyond load demand charges the 48V battery bank. The system does not export to the utility grid.
Nighttime / Low Solar
When solar power is unavailable or insufficient, the inverter discharges the battery to supply household loads. If the battery reaches its preset depth of discharge (DoD), utility grid power supplies the load demand.
Primary Benefit
The system maximizes solar self-consumption and prevents energy backflow into the utility grid.
Operating Modes
Grid-Tied Mode
The inverter synchronizes with utility frequency and exports surplus solar power, functioning as a standard grid-interactive single phase inverter.
Off-Grid Mode
Runs independently from battery and PV input, suitable for remote sites without utility connection.
Hybrid Backup Mode
Combines both: prioritizes solar and battery use during the day, switches to grid or battery seamlessly at night or during outages.
Comprehensive Protection and International Safety Standards
Safety is critical for residential solar energy systems.
The HC1060EH48L integrates multiple hardware and software protection functions.
These include:
- Grid overvoltage protection
- Grid undervoltage protection
- Overfrequency protection
- Underfrequency protection
- Battery overcurrent protection
- PV reverse polarity alarm
- Output short circuit protection
- Overload protection
- Insulation resistance monitoring
- Ground fault protection
- Residual Current Monitoring Unit (RCMU)
The inverter complies with international safety and EMC requirements, including:
- IEC 62109-1
- IEC 62109-2
- IEC/EN 61000 series
- EN 62920
- IEC 62321
These standards ensure reliable operation in global solar markets.
Recommended Application
Residential Solar Backup System
The HC1066EH48L is ideal for modern homes requiring:
- Solar self-consumption
- Energy independence
- Backup electricity
- Lower electricity costs
Small Commercial Solar Storage
For small businesses, the inverter provides:
- Stable daytime solar power
- Backup during outages
- Peak demand reduction
Suitable locations:
- Retail stores
- Workshops
- Offices
- Small factories
Remote Area Power Systems
The inverter is suitable for areas with unstable grid infrastructure.
System combination:
PV + Battery + Generator + HC1066EH48L
provides reliable electricity access.
Recommended System Configuration
| System Component | Recommended Specification |
| Hybrid Inverter | HC1066EH48L x 1 |
| PV Array Capacity | 700W PV Modules x 16 |
| Battery Voltage | 51.2V 314AH x 1 |
| Battery Type | LiFePO4 Lithium Battery |
| Battery Current | Up to 120A |
| Backup Switching | ≤10ms |
| Monitoring | WiFi / 4G / RS485 / CAN |
FAQ
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