Overview
Public facility projects including hospitals, schools, data centers and government buildings belong to critical power guarantee scenarios. These applications require ultra-high power supply reliability, zero accidental power outages, top-tier fire safety performance, low operational noise and reliable backup power capability. Strict standards are enforced for equipment safety level, operational stability and emergency power guarantee performance in public service scenarios. QDTB® provides purpose-built power equipment for the most demanding public facility applications.
Fireproof Dry-Type Transformers
SCB13/SCB14 cast resin transformers with flame-retardant and self-extinguishing performance, no open fire risk. Ultra-low noise operation for hospital wards, teaching areas and quiet office environments.
Dual Power Backup System
KYN28 HV switchgears with GCS/MNS intelligent switchgears featuring automatic dual-power switching. Seamless main-standby conversion achieving zero power outage for critical loads.
Pure Power Quality
Reactors and harmonic filtering equipment eliminate grid harmonics and voltage distortion, providing pure and stable power for medical devices, server systems and precision instruments.
Isolation Transformers
Special isolation transformers for medical rooms, data center computer rooms and lab precision equipment. Isolate grid interference, ensure equipment accuracy and eliminate electric leakage risks.
Public Facilities Power System Calculator
Size the power supply and emergency power chain for hospitals, schools, stadiums and airports - N/N+1/2N redundancy, ATS, EPS and standby diesel, with BOM and single-line diagram.
Industry Context & Operational Characteristics
Public facility projects including hospitals, schools, data centers and government buildings belong to critical power guarantee scenarios. These applications require ultra-high power supply reliability, zero accidental power outages, top-tier fire safety performance, low operational noise and reliable backup power capability. Strict standards are enforced for equipment safety level, operational stability and emergency power guarantee performance in public service scenarios.
Key Operational Challenges
Power Distribution Architecture
Dual-grid incoming power → Main and standby substation → Low-voltage distribution system → Key terminal load + emergency backup power system
Core Equipment Selection
Indoor Fireproof Dry-Type Transformer
Recommended Model: SCB13/SCB14 series high-performance cast resin dry-type transformers
Core Configuration & Advantages
- Flame-retardant and self-extinguishing performance with no open fire, meeting the highest fire safety standards for indoor public buildings
- Ultra-low noise operation, suitable for hospital wards, teaching areas and quiet office environments
- Excellent short-circuit resistance and stable operational performance with ultra-low failure rate
- Pure power output with zero harmonic interference, protecting precision public service equipment
Isolation & Control Transformers
Recommended Model: Special isolation transformers for medical and data center applications
Core Configuration & Advantages
- Configured for medical rooms, data center computer rooms and laboratory precision equipment
- Isolate grid interference and ensure equipment operational accuracy and safety
- Eliminate electric leakage risks in key public scenarios
- Provide pure and stable power output for sensitive equipment
High-Reliability Switchgear System
Recommended Model: KYN28 high-voltage switchgears with GCS/MNS intelligent switchgears
Core Configuration & Advantages
- Automatic dual-power switching function
- Seamless main-standby power conversion achieving zero power outage for critical loads
- Intelligent protection and monitoring capabilities
- Designed for critical public facility power supply
Power Quality Purification System
Recommended Model: Matching reactors and harmonic filtering equipment
Core Configuration & Advantages
- Eliminate grid harmonics and voltage distortion
- Provide pure, stable and high-quality power supply
- Protect medical devices, server systems and precision instruments
- Ensure compliance with strict power quality requirements
Switchgear & Substation Selection
Automatic Transfer Switch (ATS)
ATS cabinets are designed to transfer power between the main grid and backup generators within 0.3 seconds. The system uses intelligent PLC controllers with continuous voltage and frequency monitoring, ensuring that critical loads (Type 1) such as operating rooms and fire protection systems are never interrupted. The cabinet features high protection ratings, fire propagation prevention, and integrates both mechanical and electrical interlocking mechanisms for absolute safety.
Low Voltage Switchgear
Low voltage switchgear distributes power to end-use loads throughout public facilities. Equipped with pure copper busbar systems and high-quality MCCB/ACB circuit breakers, the cabinet ensures high short-circuit current withstand capability. Integrated reactive power compensation capacitors and harmonic filtering reactors protect sensitive medical and IT equipment from voltage distortion, enhancing overall energy efficiency.
Medium Voltage Switchgear
Medium voltage switchgear protects and controls the incoming power supply for public facility substations. Using SF6 gas insulation or vacuum technology, the cabinet provides powerful short-circuit breaking capability in a compact footprint suitable for confined spaces. Multi-function protection relays enable monitoring, metering, and communication with SCADA systems for remote operation and rapid fault handling.
Public Scenario Special Optimization
Dual Power Backup Design
Compliant with first-class power supply guarantee standards for key public facilities
Zero-Fire-Risk Configuration
Full dry-type flame-retardant equipment with no flammable oil hazards
Low-Noise Environmental Protection
Comprehensive vibration and noise reduction treatment for public environments
Intelligent Monitoring
Real-time temperature, fault and operational status monitoring with early warning and preventive maintenance support
Power Quality Optimization
Power quality plays a key role in ensuring equipment longevity and safety for public facilities. QDTB® systems integrate reactive power compensation capacitors and harmonic filtering reactors to minimize voltage distortion caused by non-linear loads (such as VFDs, medical equipment, and LED lighting). Isolation transformers provide clean, noise-free power with voltage stabilization, protecting sensitive equipment from voltage sags and transients. The system not only saves energy but also reduces the risk of power quality-related failures.
Key Benefits
Ultra-High Power Supply Reliability
Dual power backup system ensures uninterrupted operation of core public service facilities
Top-Tier Safety Standard
Full flame-retardant and fire-proof design eliminates fire and electric leakage risks
Pure Power Quality
Effectively filters harmonic interference to protect precision public service equipment
Environment & Human Friendly
Low noise and zero pollution design suitable for long-term operation in crowded public areas
Technical specifications
| Transformer Capacity | 30 kVA - 2,000 kVA |
| Voltage Levels | 10kV → 0.4kV |
| Fire Safety | Flame-retardant, self-extinguishing (F class) |
| Insulation Class | F / H (155°C / 180°C) |
| Noise Level | < 35dB (hospital/school rated) |
| Power Supply Class | Class I (dual power backup) |
| Switching Time | < 0.3s (auto dual-power) |
| Power Quality | THD < 3% (purified output) |
Standards Compliance
Applications
Related Products
Explore QDTB® product lines available for this solution
Dry Type Transformers
SCB13/SCB14 fireproof transformers for hospitals, schools and data centers
High Voltage Switchgear
KYN28 with dual-power auto-switching for critical facility protection
Low Voltage Switchgear
GCS/MNS intelligent switchgears for terminal distribution
Special Isolation Control Transformers
Medical and data center isolation transformers for pure power supply
Reactors
Harmonic filtering reactors for power quality purification
Why Choose QDTB® for Public Facilities
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