SAKO E-SUN 4.2KVA 24V Off-Grid Hybrid Solar Inverter

Description

The SAKO E-SUN 4.2KVA 24V Off-Grid Hybrid Solar Inverter (Model: E-SUN 4.2KVA) is an advanced, all-in-one power conversion unit designed for residential home IPS backup, commercial office desks, retail shops, and off-grid solar power systems.

Operating on a 24V DC battery platform, this unit converts DC electricity generated by rooftop solar PV modules or stored in 24V battery banks into clean, regulated 230V AC pure sine wave output. Controlled by a high-speed Digital Signal Processor (DSP), it dynamically manages power routing: prioritizing clean solar PV energy first, supplementing with battery storage, and seamlessly switching to utility grid or generator power during extended backup demands.

In Bangladesh, where frequent load shedding, voltage instability, and rising electricity tariffs interrupt daily routines, this 3500W continuous output hybrid inverter provides a robust power solution. It easily drives essential household and commercial loads—including inverter refrigerators, ceiling fans, LED lighting, desktop computers, Wi-Fi routers, and television sets—without interruption.

Key Features

• 3500W Pure Sine Wave Output: Provides clean 230V AC output with minimal total harmonic distortion (THD), protecting sensitive home electronics and motor-driven appliances.
• Built-in 120A MPPT Solar Controller: Features an integrated 120A MPPT solar charge controller with up to 98% tracking efficiency to maximize energy extraction from solar PV modules.
• Wide PV Operating Voltage Range: Supports open-circuit PV input voltages up to 400V DC (45V–400V DC operating range), enabling long panel string configurations.
• 10ms UPS Power Transfer: Delivers an ultra-fast 10ms transfer time in UPS mode, keeping desktop computers, routers, and network gear online without rebooting during power outages.
• LiFePO4 & Lead-Acid Support: Offers configurable charging voltage profiles tailored for LiFePO4 lithium batteries, AGM, Gel, and flooded lead-acid batteries.
• Battery-Independent Operation: Capable of running connected loads directly using solar PV energy during daytime hours even if no battery bank is attached.
• Configurable LCD Screen: Integrated front panel LCD display with customizable button settings for solar/grid charging priority and input voltage ranges.

Technical Advantages

• High Efficiency: Peak conversion efficiency exceeding 90% in battery mode, reducing conversion losses and optimizing battery discharge cycles.
• Durable Construction: Industrial-grade IP20 steel cabinet designed for efficient internal cooling and physical durability under continuous daily use.
• Safety Protection: Comprehensive multi-stage protection suite against output short circuits, electrical overloads, over-temperature, and battery overcharging.
• Energy Saving: Smart power prioritization modes (Solar First, Utility First, Solar & Utility) reduce monthly electric bills by using free solar power.
• Easy Maintenance: Compact 7.0 kg chassis with accessible terminal connections, status indicators, and modular electronics simplifies system maintenance.

Applications

• Residential: Rooftop off-grid solar setups, home IPS backup, multi-story apartments, and private residences.
• Commercial: Retail superstores, pharmacies, small business branches, IT desks, and customer service counters.
• Industrial: Automation control circuits, precision test benches, and safety instrumentation networks.
• Factory: Security monitoring rooms, factory floor emergency lighting, and critical communication hubs.
• Office: Workstation power continuity, server racks, Wi-Fi routers, IP cameras, and PBX telephone systems.
• Project Installation: Rural off-grid solar setups, agricultural irrigation pumping control, telecom BTS towers, and remote community power stations.

Technical Specification Table

Features List

✓ High efficiency operation exceeding 90% peak conversion efficiency

✓ Advanced protection system against short circuits, overloads, and high heat

✓ Long service life backed by intelligent DSP digital power management

✓ Easy wall-mounted compact installation weighing only 7.0 kg

✓ Low maintenance operation with optional Wi-Fi/GPRS remote tracking

Benefits For Customers

• Reduces Electricity Cost: Uses direct solar power to run household loads during peak daylight hours, cutting monthly utility expenses.
• Improves Operational Reliability: 10ms UPS transfer time prevents desktop computer reboots, server crashes, and Wi-Fi disconnects during load shedding.
• Saves Maintenance Cost: Automated battery management protects 24V lead-acid or lithium battery banks from overcharging or deep discharge damage.
• Suitable for Bangladesh Environment: Operates reliably under high ambient room temperatures (-10°C to 50°C) and handles unstable grid voltages.

Installation & Maintenance Guide

Installation Requirements

• Mount the inverter vertically on a solid concrete or brick wall inside a well-ventilated, dry indoor location shielded from rain and direct sunlight.
• Keep a minimum clearance of 200 mm on both sides and 500 mm above and below the chassis for fan cooling airflow.
• Use recommended copper cable wire gauges: 10AWG for AC input/output terminals, 8AWG for PV panel connections, and heavy 2AWG copper cables for 24V battery connections.
• Install external AC circuit breakers (25A), DC battery disconnect switches (150A), and PV DC isolators (25A) for safety isolation.

Maintenance Tips

• Wipe fan cooling vents periodically with a clean, dry microfiber cloth to clear dust buildup and maintain airflow.
• Inspect terminal screw connections annually to confirm cable lugs and battery bolts remain tightly torqued.
• Use the front LCD display screen to monitor live solar generation, battery voltage, and load levels.

Safety Instructions

• Turn off all AC breakers, DC isolators, and PV switches prior to making electrical wire connections.
• Never short-circuit the positive and negative 24V DC battery output terminals.
• Electrical installation and system commissioning must be performed by a qualified solar installer or electrician.

FAQ Section

Q: What is the price of SAKO E-SUN 4.2KVA 24V Off Grid Hybrid Inverter in Bangladesh?

A: You can find the updated, competitive price for the SAKO E-SUN 4.2KVA 24V hybrid inverter directly on loopshop.com.bd, featuring authentic warranty guarantees and special offers.

Q: Where can I buy SAKO E-SUN 4.2KVA 24V Off Grid Hybrid Inverter in Bangladesh?

A: You can purchase it online at loopshop.com.bd with secure payment options, verified technical authenticity, and fast nationwide delivery across Bangladesh.

Q: What warranty does this product have?

A: The SAKO E-SUN 4.2KVA inverter comes with standard manufacturer warranty coverage. Please refer to the warranty section on loopshop.com.bd or contact customer support for policy details.

Q: Is this suitable for Bangladesh climate?

A: Yes, engineered to operate smoothly between -10°C and 50°C, it withstands Bangladesh’s high summer ambient heat and humid weather conditions.

Q: How to install this product?

A: Mount the 7.0 kg unit vertically on a wall, connect 24V battery cables, wire solar PV modules (up to 400V VOC), and connect AC input/output terminals before setting charge parameters via the LCD panel.

Q: What wattage load can the SAKO E-SUN 4.2KVA inverter run?

A: It provides a continuous pure sine wave output capacity of 3500W (4.2KVA), capable of running refrigerators, lights, fans, televisions, computers, and small pumps.

Q: Does this inverter support 24V LiFePO4 Lithium batteries?

A: Yes, it fully supports 24V LiFePO4 lithium batteries as well as AGM, Gel, and flooded lead-acid battery types.

Q: Can this hybrid inverter run without a battery connected?

A: Yes, it features high-voltage MPPT technology that allows feeding connected loads directly from solar panel power during daylight hours without a battery.

Q: What is the maximum PV input voltage for the SAKO E-SUN 4.2KVA?

A: The maximum open-circuit PV input voltage (VOC) is 400V DC, with an MPPT operating voltage range of 45V to 400V DC.

Q: Does it prevent computer reboots during power outages?

A: Yes, its switch transfer time is 10ms in UPS mode, providing seamless power continuity for computers and IT equipment during load shedding.