FAQ

Resistive load banks dissipate power using resistive heating elements at unity power factor (PF=1). They simulate purely resistive loads like electric heating and incandescent lighting. They are ideal for generator testing, UPS validation, and battery discharge testing.

RL combined load banks add inductive (reactive) components to simulate real-world loads that include motors, transformers, and other inductive equipment. They operate at a lagging power factor (typically PF=0.8), which is the standard condition for most industrial generators under normal operation. This makes RL load banks essential for accurate generator commissioning and power factor testing.

Power factor represents the ratio of real power (kW) to apparent power (kVA). Most industrial generators operate at 0.8 PF under normal conditions — meaning 80% of their apparent power capacity is real, usable power, while 20% is reactive power that doesn't perform useful work.

Testing a generator only at PF=1 (resistive only) doesn't reveal how it performs under the inductive conditions it will actually face in service. RL combined load banks simulate the true reactive load profile, ensuring generators are properly sized and validated for real-world conditions. This is particularly critical for standby generator systems.

The right capacity depends on the rated output of the power system you're testing:

• For generators: choose a load bank rated at least equal to the generator's full-load capacity (kW or kVA)
• For UPS systems: typically 80–100% of the UPS rated capacity for battery discharge testing
• For battery testing: base capacity on the battery bank's Amp-hour rating and desired discharge rate
• Consider future expansion — it's better to slightly oversize than undersize

Our engineering team can help you calculate the exact capacity needed for your specific application. Contact us for a free consultation.

YINTO load banks are available in a wide range of voltage configurations:

• Single-phase: 110V, 220V, 230V, 240V
• Three-phase (low voltage): 208V, 220V, 380V, 400V, 415V
• Three-phase (medium voltage): 440V, 480V, 690V
• Custom voltages: Available for OEM/ODM projects

All units support 50Hz and 60Hz operation (dual frequency models available). For high-voltage applications, contact our engineering team for custom solutions.

Adjustable power step resolution varies by model:

• LBS100: Minimum step as low as 0.1kW for precise load simulation
• LBP200: Minimum step of 1kW with fine adjustment capability
• LBP300–1000: Step sizes scale proportionally with capacity
• RL Combined: Reactive load step sizes vary by power factor setting

All models feature digital load control for accurate, repeatable test results.

Yes. YINTO load banks support parallel connection to expand total testing capacity. Multiple units can be synchronized through our PC control software for coordinated operation.

For example, two 500kW units can be paralleled to provide 1000kW of testing capacity. We recommend consulting our engineering team to design the parallel configuration and ensure proper load sharing and safety interlocks.

Absolutely. YINTO has over 20 years of OEM/ODM experience. We can customize:

• Non-standard voltage and current ratings
• Special enclosure types (marine-rated, ATEX/explosion-proof)
• Custom control interfaces and software integration
• Branding and labeling (your logo, your model numbers)
• Special environmental ratings (extreme temperatures, high altitude)

Share your requirements with our engineering team and we'll provide a tailored solution.

YINTO load banks offer three control options:

• Manual Panel: Direct operation via the unit's front panel — rotary switches or push buttons with digital display
• Remote Control: Handheld or panel-mounted remote controller for safe distance operation
• PC Software: Windows-based software with full monitoring, data logging, report generation, and load curve analysis. Communication via RS485, USB, or Bluetooth

All control modes offer the same precision — choose based on your operational requirements.

Yes. When connected to our PC monitoring software, the load bank supports:

• Real-time data logging (voltage, current, power, energy, PF, frequency)
• Test report generation with timestamps and graphs
• Export to PDF, Excel, and CSV formats
• Historical data storage and comparison

The on-board display also shows real-time measurements for manual recording.

All YINTO resistive load banks are rated for continuous full-load operation within their specified ambient temperature range (typically 0°C to 45°C). The high-efficiency heat dissipation system with integrated axial fans ensures stable performance during extended testing sessions.

For RL combined units, duty cycle ratings depend on the reactive load component and ambient conditions. Contact our team for specific recommendations for your application.

YINTO load banks include comprehensive built-in protections:

• Over-temperature: Automatic shutdown if resistance elements overheat
• Over-current: Protection against excessive current draw
• Over-voltage: Input voltage surge protection
• Short circuit: Circuit breaker protection
• Phase loss: Automatic shutdown on supply phase failure
• Fan failure: Prevents operation without adequate cooling

YINTO load banks carry the following certifications:

• CE Marking: Full compliance with EU safety, health, and environmental directives
• EAC Certification: Eurasian Customs Union conformity for Russia and neighboring markets
• ISO 9001:2015: Quality management system certification
• IEC Standards: Compliance with relevant IEC standards for electrical safety

Additional certifications (ABS, DNV-GL for marine, ATEX for explosive environments) available for specific models. Contact us for your specific market requirements.

Yes. We can provide third-party metrology calibration certificates from accredited laboratories. This service is available both for new unit purchases and for recalibration of existing equipment.

Calibration certificates verify the accuracy of the load bank's measurement instruments and are often required for quality assurance programs and regulatory compliance.

Yes. YINTO offers marine-grade load banks certified for shipboard use, including compliance with ABS (American Bureau of Shipping) and DNV-GL requirements. These units feature enhanced corrosion protection, vibration resistance, and marine-appropriate cooling systems.

Our marine load banks are used extensively in new ship construction and dockside testing for vessels across commercial, naval, and offshore applications.

YINTO provides:

• 1-year full unit warranty on all standard load bank models
• Separate element warranty — resistance elements carry a distinct warranty period
• Extended warranty options available upon request
• Lifetime software upgrades for all PC control software

Warranty covers manufacturing defects and component failures under normal operating conditions.

Our support network includes:

• 24/7 technical hotline: Remote diagnosis and troubleshooting guidance
• Remote support: PC software allows our engineers to access and diagnose your unit remotely
• On-site support: For critical tasks, engineers can be dispatched worldwide
• Spare parts: Original factory spare parts available with fast shipping
• Training: On-site or remote operation training available

Standard delivery times vary by model and configuration:

• In-stock models (e.g., LBS100): typically 5–15 business days
• Standard configurations: 3–6 weeks from order confirmation
• Custom/OEM units: 6–12 weeks depending on complexity
• Express production: Available with additional cost for urgent requirements

All shipments include professional on-site delivery with testing and calibration by our engineers.

Yes. YINTO provides comprehensive training programs:

• Standard training: Included with every unit — covers operation, safety, and basic maintenance
• Advanced training: Fault diagnosis, software configuration, and advanced testing techniques
• On-site training: Conducted at your facility with your specific equipment
• Remote training: Live video sessions for theory and basic operation

All training is delivered by experienced field engineers.