SUNGOLDPOWER UL1741 5000W Hybrid Solar Inverter,48V DC to 110V/120V AC,All in One,80A MPPT Solar Charger and 40A AC Battery Charger Pure Sine Wave for Off Grid System(NO Parallel)
About this item
- 【All in One Solar Inverter】:SUNGOLDPOWER 5000 Watt 48V solar inverter combined with Max 80A battery charging (SOLAR+AC), Max 5500W 500V PV Array. It is widely used in off-grid 48V system.UL1741 listed by ETL. Does not support PARALLEL
- 【Stable AC output】: 5000W 48V pure sine wave solar inverter 110V/120V AC output, loaded motor capacity 4HP and overload protected, it can power various household and office loads such as refrigerators, computers, televisions, ovens, air conditioners, etc..
- 【Four charging modes and 4 Output modes】: SPH504880A Inverter has 4 charging mode:AC Priority/ Solar Priority/Only Solar /Mains & Solar hybrid charging;4 output modes: PV priority/utility priority/Inverter priority/Hybrid output and gird connection to meet your different requirements
- 【Uninterruptible Power Supply】: If mains/generator disconnected or the solar charging insufficient, the inverter charger takes over the battery supply to the alternative option within 10ms, which will not let your electronics shut down
- 【Battery compatible】: SUNGOLDPOWER 5000 Watt DC 48 volt Solar Inverter is compatible with 48V AGM/Sealed, Gel, Flooded, Lithium batteries and a User Mode for custom inputs to work with virtually all battery types. Battery Charging Voltage Range: 40 –60V, RS485 port for BMS communication
- 【What you get】: UL1741 5000 Watt 48V Solar Inverter SPH504880A 1set;SUNGOLDPOWER is professional manufacturer in inverter business for over 10 years, customer services of Sungoldpower inverter are in USA,warranty time 24 months, lifetime technical support
SUNGOLDPOWER UL1741 5000W Hybrid Solar Inverter
Detailed Product Review: SunGoldPower UL1741 5000W Hybrid Solar Inverter (48V DC to 110V/120V AC)
The SunGoldPower UL1741 5000W Hybrid Solar Inverter (Model: SPH504880A) is a highly popular, budget-friendly option for readers who want to build a dependable off-grid backup system without paying premium tier-1 prices. However, because this specific model outputs single-phase 110V/120V AC only, it requires distinct installation strategies to work within standard 220V/240V Nigerian households.
Technical Specifications At-A-Glance
This all-in-one system combines a pure sine wave inverter, an MPPT solar controller, and a traditional utility battery charger into a single wall-mounted chassis.
- Continuous AC Output: 5,000W Continuous Pure Sine Wave
- Output Voltage Profile: Single-Phase 110V / 120V AC (Not native 240V)
- Battery System Voltage: 48V DC Architecture (Highly efficient current paths)
- Max Solar (PV) Array Input: 5,500W
- Max Solar Open Circuit Voltage (\(V_{oc}\)): 500V DC (Allows long series panel strings)
- Integrated Solar Charge Controller: 80A or 100A MPPT (Depending on exact sub-variant)
- Max AC Grid Utility Charging: 40A Current Cap
UPS Backup Switch Window: 10 Milliseconds automated transition
The Pros: What Makes This Unit a Great Budget Pick
- Excellent Cost-to-Performance Ratio: At roughly half the cost of premium tier-1 hybrid platforms, it delivers a legitimate 5,000W of clean continuous power, making grid independence accessible for budget-conscious buyers.
- High-Voltage 500V MPPT Input: The 500V \(V_{oc}\) limit allows you to wire multiple high-wattage monocrystalline panels straight in series. This saves significant money on thick wiring and eliminates the need for expensive external combiner boxes.
- Open 48V Third-Party Compatibility: It functions perfectly with standard 48V Lithium (LiFePO4) wall batteries, sealed AGM cells, or flooded deep-cycle tubular options, meaning you are never locked into expensive, brand-exclusive batteries.
- Four Smart Operational Modes: Offers high flexibility through distinct modes: AC Priority, Solar Priority, Only Solar, and Mains/Solar Hybrid Charging to adapt seamlessly to rolling blackout schedules.
- Certified Structural Safety: Built to the ETL-certified UL1741 safety standard, providing high-quality internal grounding arrays and electrical fault protection.
The Cons
- No Native 220V/240V Output: This model natively pushes 110V/120V AC output. To run standard 220V/240V appliances (like common Nigerian refrigerators, TVs, and fans), you must buy an external step-up autotransformer or use a dual-unit configuration.
- Slow Grid Charging Limits: The utility AC charging function is capped at a modest 40A. If public DisCo power only stays on for brief 1-to-2-hour windows, this unit will charge your battery bank much slower than high-end models.
- Higher Idle Standby Self-Consumption: The inverter consumes roughly 50 Watts of power simply staying turned on and idling overnight. This can slowly drain smaller battery banks when no active household appliances are running.
- No Built-In Parallel Stacking: This base sub-variant (
SPH504880A) cannot be daisy-chained or expanded to multiple units in parallel. If your energy needs grow in the future, you cannot link a second unit to double your output; you must replace the inverter entirely.
⚡ The 120V to 240V Conversion Guide: How to Use an Autotransformer Safely in Nigeria
Because the SunGoldPower 5000W Inverter is a North American standard model, it outputs single-phase 110V/120V AC. However, household appliances in Nigeria run exclusively on 220V/240V AC. If you connect a Nigerian refrigerator, fan, or smart TV directly to a 120V line, the appliance will underperform, overheat, or fail to start entirely. To fix this, you must install an external Heavy-Duty Step-Up Autotransformer. This guide explains how to select, wire, and safely manage an autotransformer to match Nigerian electronic standards.
Step 1: Size the Autotransformer Correctly (The 80% Rule)
An autotransformer converts voltage using shared electromagnetic coils. This process generates heat under heavy loads. To prevent your transformer from overheating or burning out, never load it beyond 80% of its maximum capacity. Because your SunGoldPower inverter delivers 5,000 Watts of continuous power, your autotransformer must be sized to handle both that continuous load and sudden appliance startup surges.
- Minimum Requirement: You need a 5,000VA (5kVA) or 7,500VA (7.5kVA) heavy-duty step-up transformer.
- Safety Alert: Buying a cheap, undersized 3,000W transformer will create a severe bottleneck. The transformer will trip or fail long before the inverter reaches its full capacity.
Step 2: Wiring Diagram and Connection Paths
- Inverter to Transformer (The Input Side): Run thick, high-current copper wiring from the inverter’s AC OUTPUT terminals (Live, Neutral, and Ground) straight into the 110V/120V INPUT terminals on the back of the autransformer.
- Transformer to Changeover (The Output Side): Run your household distribution wiring from the transformer’s 220V/240V OUTPUT terminals straight to your main changeover switch or sub-panel breaker.
- Ensure Unified Grounding: Connect the chassis ground of the autotransformer to the inverter’s ground block and your home’s main earthing rod to prevent electrical shocks.
Step 3: Critical Field Maintenance & Safety Checkpoints
- Expect Baseline Efficiency Loss (The Core Drain): Every transformer experiences small energy losses from core heat. A high-quality step-up transformer will consume roughly 50 to 90 Watts just sitting idle. Keep this in mind when calculating your nighttime battery drain.
- Prevent Heat Buildup: Autotransformers get hot during peak operation. Never enclose the transformer inside a tight, sealed wooden cabinet or stack items on top of its vents. Install it on a concrete floor or mount it securely on a wall with at least 12 inches of open air clearance on all sides.
- Enforce Inverter Phase Balancing: If your autotransformer has a center-tapped split-phase layout, ensure your installation technician balances the loads evenly across both 120V input legs. An unbalanced transformer hums loudly, operates less efficiently, and can cause voltage drops on one side of your household wiring.
