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H3750i Open Frame Portable Pure Sine Wave Inverter Gasoline Generator with 3.5kW Max Power
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H3750i Open Frame Portable Pure Sine Wave Inverter Gasoline Generator with 3.5kW Max Power
| Payment Method: | L/C,T/T |
Detail Information
Brand Name
Runda Tech
Rated Power (kW):
3.2
Max.power (kW):
3.5
Rated Voltage (V):
230
Max.power:
3.5 KW
Rated Voltage:
230 V
Rated Power:
3.2 KW
Rated Frequency:
50Hz
Noise Level:
72dBA @7 Meters
Net Weight:
27kg
Highlight:
3.5kW Max Power Inverter Generator
,Pure Sine Wave Gasoline Generator
,Open Frame Design Portable Generator
Product Description
H3750i Open Frame Portable Pure Sine Wave Inverter Gasoline Generator
The H3750i is an open-frame portable pure sine wave inverter gasoline generator, specially developed for global construction sites, farmland, remote off-grid villages, warehouse standby and medium-budget household backup markets including Southeast Asia, Middle East, Africa, Latin America and Europe.
Different from fully enclosed silent cabinet models, this machine adopts open metal rack design, removing expensive sound insulation shell to greatly cut manufacturing and purchase cost, while retaining advanced four-stage AC-DC-AC inverter power conversion technology with THD ≤3% clean power output. It can safely power refrigerators, air conditioners, power tools, surveillance cameras and small solar inverters.
With 230V 50Hz universal grid output, no extra transformer required for overseas local appliances. The open frame structure brings convenient full access for engine maintenance, while the compact layout guarantees acceptable container loading quantity to control sea freight.
Working Principle of Inverter Generator
The four-step power conversion system is identical to silent series generators:
- Power Generation: Four-stroke engine drives alternator coil to produce high-frequency three-phase AC with fluctuating raw voltage
- Rectification: High-efficiency rectifier converts unstable high-frequency AC into smooth DC voltage, eliminating RPM fluctuation interference
- Inversion: PWM pulse width modulator turns DC into 20kHz high-frequency modulated sine wave for real-time precise voltage regulation
- Filtering: Multi-stage low-pass filter removes high-frequency clutter to output standard 50Hz municipal-grade pure sine electricity
THD ≤3%, far better than ordinary square-wave open generators (THD over 20%), avoids burnout of chip-based sensitive electronic equipment.
Complete Technical Specifications
| Item | H3750i Open Frame Parameter |
|---|---|
| Rated Output Power | 3.2kW |
| Maximum Surge Power | 3.5kW |
| Rated Voltage | 230V Single Phase |
| Rated Frequency | 50Hz |
| Total Harmonic Distortion | ≤3% |
| Starting Mode | Manual Recoil Pull Start |
| Engine Type | 4-Stroke Air-Cooled Gasoline Engine |
| Displacement | 208cc |
| Engine Oil Capacity | 0.6L |
| Fuel Tank Volume | 7.5L |
| Recommended Fuel | Regular Unleaded Petrol |
| Continuous Runtime @50% Load | 5.8 Hours |
| Noise Level @7 Meters | 72dBA (Open Frame, No Soundproof Cabinet) |
| Net Weight | 27kg |
| Overall Dimension (L×W×H) | 445×375×455 mm |
| Outer Packing Size | 450×380×460 mm |
| Container Loading Qty | 20GP: 264 Units / 40GP: 540 Units / 40HQ: 675 Units |
| Standard Display | 3-in-1 Digital Meter (Voltage / Frequency / Total Runtime) |
| Optional Upgrade | 6-in-1 Multifunctional Monitor (Oil / Overload / Fuel / Load Rate) |
| Extra Ports | Parallel Port / Multi-spec USB / 12V DC Output |
Full Machine Structure & Hardware Configuration
Fuel Control System
- Fuel Tank ON/OFF Switch: Switch to OFF after shutdown to prevent gasoline volatilization & leakage during storage & transport
- 3-in-1 Integrated Fuel Choke Valve: Single knob controls fuel supply + air mixing for easy cold startup
Starting System
Independent heavy-duty recoil starter, fully mechanical without battery parts. No dead battery failure risk for long-term stock & humid tropical regions.
Exclusive Open Frame Rack Design
- Thickened anti-rust metal tubular frame, shock-absorbing rubber foot pads at four corners to reduce vibration during operation
- Fully exposed engine & inverter module, zero disassembly needed for oil change, filter replacement and routine maintenance; greatly cut after-sales labor cost for overseas users
- No closed sound insulation cabinet, reduces overall weight and procurement cost compared to silent enclosed models
- Natural cross air circulation all around the engine, strong heat dissipation, suitable for long-time construction site continuous work
Output & Expansion Interfaces
- AC Output Sockets: Customizable EU / South Africa / Australia / Brazil / US / GFCI sockets with dust-proof covers; parallel jack available
- USB Modules Optional: Single 5V1A / Dual 5V1+2A / QC3.0 Fast Charge USB
- 12V DC Aux Output: Cigarette lighter / T-type / terminal posts for outdoor DC lighting
Parallel Warning: Only connect two identical H3750i units; DO NOT parallel with other brands or silent cabinet generators, risk circuit damage & fire.
Indicator & Display System
Standard 3-in-1 digital meter + 3 warning lights (low oil / overload / running). Optional 6-in-1 comprehensive monitor showing full operation data without professional training.
Intelligent Control Functions
Reset Function (Optional)
When overload / low oil / overheat triggers inverter power cut, reset button clears fault signal after troubleshooting, no need to restart whole engine. Models without reset must fully shut down and restart to release protection lock.
Intelligent Economy Idle Mode
Auto load detection sensor; engine drops RPM with no load, saves fuel by ~10%; instantly boosts speed once appliances are connected, balancing fuel cost and power output.
Parallel Connection Function
Two identical H3750i can be paralleled to double power capacity for large air conditioners & power tools. Cross-brand parallel forbidden for safety hazard.
Complete Multi-Layer Safety Protection System
- Low oil automatic shutdown: Prevents cylinder pulling & permanent engine damage
- Overload & short-circuit no-fuse breaker: Instant power cut to protect generator & connected loads
- Overheat protection: Full open natural ventilation avoids overheating under long-hour heavy load
All protection complies international household & construction electrical safety standards.
Core Selling Points for Global Distributors & End Users
Ultra Low Procurement Cost (Core Open Frame Advantage)
Without expensive sound insulation cabinet, purchase price is far lower than enclosed silent models of equal power. Perfect for budget-sensitive construction teams, rural off-grid users and large-volume wholesale dealers pursuing high profit margin.
Without expensive sound insulation cabinet, purchase price is far lower than enclosed silent models of equal power. Perfect for budget-sensitive construction teams, rural off-grid users and large-volume wholesale dealers pursuing high profit margin.
Easy Full Maintenance Open Rack Design
All engine & inverter parts are exposed; users can replace oil, air filter, spark plug without removing cabinet panels. Save maintenance labor cost for remote job sites with no professional repairmen.
All engine & inverter parts are exposed; users can replace oil, air filter, spark plug without removing cabinet panels. Save maintenance labor cost for remote job sites with no professional repairmen.
Pure Sine Wave THD ≤3% Premium Power Quality
Same high-grade inverter core as silent cabinet series, safely power air conditioners, power tools, CCTV and home electronics without damaging sensitive chips, unlike cheap square-wave open generators.
Same high-grade inverter core as silent cabinet series, safely power air conditioners, power tools, CCTV and home electronics without damaging sensitive chips, unlike cheap square-wave open generators.
Decent Endurance with 7.5L Large Fuel Tank
5.8 hours continuous runtime under 50% half load, match demand of all-day construction site operation, reduce frequent refueling trouble.
5.8 hours continuous runtime under 50% half load, match demand of all-day construction site operation, reduce frequent refueling trouble.
230V 50Hz Universal Global Output
Directly match household appliances of Southeast Asia, Middle East, Latin America, no extra transformer needed for local retail sales.
Directly match household appliances of Southeast Asia, Middle East, Latin America, no extra transformer needed for local retail sales.
Acceptable Container Loading Density
264pcs per 20GP, up to 675pcs for 40HQ container, balance machine size and logistics cost for bulk export orders.
264pcs per 20GP, up to 675pcs for 40HQ container, balance machine size and logistics cost for bulk export orders.
Simple Mechanical Structure, Global Universal Spare Parts
Recoil start without battery failure risk; 0.6L oil change volume. Filters, engine oil and spark plugs are widely available at local hardware stores worldwide, no exclusive imported spare parts required.
Recoil start without battery failure risk; 0.6L oil change volume. Filters, engine oil and spark plugs are widely available at local hardware stores worldwide, no exclusive imported spare parts required.
Multi-scene Expandable Interfaces
Parallel port, multi-type USB charging, 12V DC output, multi-country socket customization meet construction, farm and home power supply demands.
Parallel port, multi-type USB charging, 12V DC output, multi-country socket customization meet construction, farm and home power supply demands.
Competitive Summary for Overseas Dealers
H3750i open frame inverter generator shares identical high-quality inverter core with our silent cabinet series, but removes soundproof shell to cut cost significantly. It targets construction sites, rural off-grid villages and budget home backup customers who do not have strict noise limits. Open rack design greatly simplifies maintenance work, while container loading quantity keeps sea freight controllable. It is the best-selling cost-performance model for hardware & construction machinery bulk wholesale worldwide.
Global Applicable Scenarios
Construction site temporary power tools supply
Farmland irrigation & agricultural equipment power
Remote off-grid village daily electricity
Warehouse & factory standby emergency power
Budget household power outage backup
Outdoor engineering, road maintenance temporary power
Small commercial shops without strict noise restriction
Export Supporting Service Promise
Complete Documentation: Complete English spec sheets, operation manuals and CE certification for customs clearance & local registration.
Customization Options: OEM & ODM customization available: AC sockets, USB modules, outer cart labels.
Universal Spare Parts: Universal spare parts supply system, easily purchased at local global hardware shops.
Technical Support: Professional video & email technical after-sales guidance for overseas distributors.
Production Capacity: Stable mass production capacity to deliver full-container orders on schedule.
