Heavy-duty voltage stabilizers engineered for the most demanding industrial applications. Power plants, mining operations, steel mills, and mega-scale facilities trust our large capacity solutions for critical power protection.
Why Choose YIY Large Capacity Voltage Stabilizers?
By Product Technology
By Voltage Standard
By Capacity
Large Capacity Voltage Stabilizer Product Range
PWR-3 Three-Phase Servo Voltage Stabilizer
Single Phase Medium Capacity Models (15KVA-100KVA)
| Series | Type | Power Range | Input Voltage (EU) | Input Voltage (US) | Output Accuracy | Response Time | Efficiency |
| SVC | Servo | 0.5-10KVA | 150V-250V | 105V-149V | ±3% | ≤2s | ≥98% |
| PRO | High-Precision Servo | 0.5-10KVA | 150V-250V | 104V-149V | ≤2% | 0.5-1s | ≥98% |
| PR | Portable Relay | 0.5-2KVA | 125V-270V/140V-260V | N/A | ±10% | 60ms | ≥95% |
Three Phase Medium Capacity Models (15KVA-100KVA)
| Series | Type | Power Range | Input Voltage | Output Voltage | Output Accuracy | Efficiency |
| SVC-3 | Servo | 1.5-9KVA | 278V-433V or 152V-228V/166V-249V | 380V±3% or 220V±3% | ±3% | ≥98% |
| PRO-3 | High-Precision Servo | 1.5-9KVA | 278V-433V or 152V-228V/166V-249V | 380V±3% or 220V±2% | ≤2% | ≥98% |
Quick Selection Guide for YIY Large Capacity Voltage Stabilizer
| Industry Sector | Recommended Series | Typical Capacity | Key Requirements |
| Steel & Metallurgy | SBW-F | 500KVA – 3000KVA | Unbalanced loads, harsh conditions |
| Mining & Extraction | SBW-F | 300KVA – 2000KVA | Extreme environments, high reliability |
| Power Generation | SBW / SBW-F | 1000KVA – 3000KVA | Grid stability, redundancy |
| Chemical Processing | PWR-3 / SBW-F | 150KVA – 1000KVA | Precision control, safety critical |
| Cement & Building Materials | SBW | 200KVA – 1500KVA | Cost-effective, robust operation |
| Automotive Manufacturing | PWR-3 | 45KVA – 500KVA | High precision, fast response |
Professional Large Capacity Voltage Stabilizer OEM Services
- Ultra-Heavy Equipment Assembly – Specialized facilities for 3000KVA+ units, overhead crane capacity up to 50 tons
- Advanced Testing Infrastructure – High-voltage test laboratories, full-load testing up to 10MVA, harmonic analysis equipment
- Global Project Logistics – Specialized heavy transport coordination, modular shipping solutions, worldwide installation support
Large Capacity Voltage Stabilizer Applications

Heavy Steel &
Manufacturing

Mining & Extraction
Industries

Power Plants & Electrical Infrastructure
Frequently Asked Question
A: Our largest standard single unit is 3000KVA. For larger requirements, we design parallel systems with unlimited capacity. Our largest installation to date is 50MVA using parallel units with full redundancy.
A: Large units are designed with modular construction for easier transportation. We coordinate with specialized heavy transport companies and provide on-site assembly. Our installation teams have experience with crane operations and complex mechanical installations.
A: Engineering and manufacturing typically takes 3-6 months depending on customization level. Installation and commissioning adds 1-3 months. Rush projects can be accommodated with dedicated resources and expedited manufacturing.
A: Yes, our large capacity units are designed for operation up to 5000m altitude and temperature ranges from -40°C to +70°C. Special cooling systems and component derating ensure reliable operation in extreme conditions.
A: We offer N+1, N+2, and 2N redundancy configurations. For the most critical applications, we can design geographically separated redundant systems with automatic failover and manual transfer capabilities.
A: Large units include advanced harmonic filtering, power factor correction, and real-time power quality monitoring. We perform detailed harmonic analysis and design custom filtering solutions for each installation.
A: Preventive maintenance programs include quarterly visual inspections, annual comprehensive testing, and biennial major maintenance. We offer full-service maintenance contracts with guaranteed response times and spare parts availability.
A: Yes, our systems support all major industrial communication protocols including Modbus, DNP3, IEC 61850, and custom protocols. We provide complete integration with DCS, SCADA, and building management systems.
A: Our large capacity units meet IEC, IEEE, ANSI, and regional standards. We can provide certifications for specific applications including marine (DNV), railway (EN50155), and hazardous areas (ATEX/IECEx).
A: Large capacity installations include 2-year comprehensive warranty with optional extensions up to 10 years. We maintain dedicated spare parts inventory and provide guaranteed 24-hour emergency response for critical installations.








