HENGFENGYOU TRANSFORMER|ANSI/IEEE STANDARD TRANSFORMER
HENGFENGYOU TRANSFORMER|ANSI/IEEE STANDARD TRANSFORMER
Hengfengyou 13.8kV US standard three-phase dry-type distribution transformer is a safe, energy-saving, eco-friendly and maintenance-free power distribution product fully compliant with American power industry specifications. It is widely used in North American municipal power grids, large industrial zones, commercial complexes, high-rise buildings, data centers and all high-standard indoor power supply scenarios.
Boasting low operating loss, ultra-low noise, superior flame retardancy and zero pollution, all performance parameters exceed ANSI and IEEE standard requirements. It is rated F1 fire resistance class with lightning impulse withstand voltage up to 95kV. Equipped with forced air cooling system, it can operate steadily under 120% rated load. Supported by a complete intelligent temperature monitoring and protection system, the equipment delivers high operational stability and extended service life.
Our 13.8kV US standard dry-type transformers have been exported to over 50 countries and regions, mainly covering North America, Latin America and Oceania markets, and have earned widespread credibility in global American-standard power distribution systems.
13.8kV urban distribution network construction & renovation across North America
Indoor power supply for commercial buildings, hospitals, educational institutes and data centers
Power distribution for US-standard industrial enterprises, manufacturing plants and municipal infrastructure
High-rise buildings, underground substations, crowded public venues and fire-sensitive areas
ANSI C57.12.01 / ANSI C57.12.22
IEEE C57.110 / IEEE C57.12.90
IEC 60076 series
GB 1094 series
Low loss & energy saving: Adopts US-standard optimized electromagnetic design, effectively cuts no-load and load loss with prominent energy-saving effect, fully meeting North American high energy efficiency certification requirements.
Ultra-low noise: Low-vibration core and integrated winding structure ensure quiet running, in line with local noise control codes for residential and commercial districts.
Flame retardant & high safety: F1-grade fireproof performance, self-extinguishing, halogen-free, smokeless and non-toxic, free from fire and explosion hazards, complying strictly with US building fire safety regulations.
Strong impulse resistance: 13.8kV voltage class lightning impulse withstand voltage reaches 95kV, featuring excellent lightning protection and surge suppression capability to adapt to complex grid operating environments.
High overload capacity: Enables stable long-term operation at 120% rated load via forced air cooling, strong load adaptability to cope with peak power consumption.
Intelligent temperature control: Integrated temperature monitoring, automatic fan linkage and multi-stage overtemperature alarm & trip protection system.
Customized sturdy enclosure: Aluminum alloy, cold-rolled steel and stainless steel housings are optional; protection grade IP20 / IP23 available.
Maintenance-free design: Integral cast resin structure with outstanding moisture-proof, dust-proof and anti-corrosion properties, applicable to diverse harsh working conditions.
HV winding: Copper strip winding, high vacuum integral casting, exclusive patented flame-retardant epoxy formula conforming to US environmental standards
LV winding: Copper foil winding, thermosetting epoxy prepreg insulation, remarkable short-circuit impact resistance
Excellent structural integrity, ultra-low partial discharge and high mechanical strength
High-grade imported cold-rolled grain-oriented silicon steel sheet
Ladder lap joint and multi-stage step-lap stacking design
Special mineral oxide insulating coating, effectively reducing no-load loss and operating noise
Natural air cooling (AN) / Forced air cooling (AF) dual cooling modes
Real-time independent temperature monitoring for three-phase windings
Automatic fan start-stop control, overtemperature pre-alarm and emergency trip protection
Stable and reliable performance for 24-hour continuous operation
Available materials: Aluminum alloy, cold-rolled steel, stainless steel
Protection Class: IP20 (anti-touch), IP23 (rainproof)
Scientific ventilation layout, sleek appearance, convenient installation and daily inspection
Compact overall structure with small floor occupation, suitable for indoor power rooms, basements and limited electrical spaces
Oil-free dry-type design without flammable medium, no additional fire protection facilities required
Low-noise design allows installation close to load centers to lower line power loss
Matches American standard installation base dimensions, simple construction process and low overall project cost
Keep installation area dry, well-ventilated and free of corrosive, flammable gases
Reserve sufficient safety insulation clearance and heat dissipation space per ANSI norms
Ensure firm and horizontal foundation fixing to avoid operational vibration and structural deformation
Adopt standard American-spec cable connection, reliable system grounding (grounding resistance ≤ 4Ω)
Full-set intelligent temperature monitoring and control system
Overcurrent, overload and overtemperature comprehensive protection
Built-in surge arresters for overvoltage and lightning surge defense
Compatible with traditional and intelligent modular power distribution systems in North America
Winding DC resistance test
Voltage ratio, polarity and vector group verification
Insulation resistance and withstand voltage test
No-load loss & load loss parameter testing
Complete function inspection of temperature control and protection system
Fully oil-free dry-type structure, realizing nearly maintenance-free operation
Regular routine inspection: equipment appearance, operating temperature, connection tightness and running noise
Periodic ventilation channel dust cleaning to guarantee efficient heat dissipation
Supports remote data monitoring to achieve intelligent operation and maintenance management
Extra-long design service life under rated standard working conditions
Strong environmental adaptability with fine moisture-proof, dust-proof and salt fog corrosion resistance
Perfectly applicable to high-rise buildings, closed indoor spaces and core fire-prevention priority areas
| Item | Core Content | Recommended Scheme/Standard |
|---|---|---|
| Type | 13.8kV three-phase dry-type distribution transformer | Cast resin, full copper winding, US standard |
| Standards | American mainstream power industry standards | ANSI C57.12 series, IEEE C57 series, compatible with IEC & GB |
| Performance | Low loss, low noise, high energy efficiency | Exceeds official ANSI/IEEE performance indicators |
| Fire Class | F1 flame retardant, non-toxic, smokeless & self-extinguishing | Preferred solution for indoor projects meeting US fire codes |
| Lightning Impulse | 13.8kV level: 95kV | Superior lightning resistance and anti-surge performance |
| Cooling Mode | AN / AF dual cooling system | AF mode supports 120% rated load stable operation |
| Enclosure | Aluminum alloy / cold-rolled steel / stainless steel | IP20 / IP23 optional, customizable on demand |
| Application | US-standard 13.8kV grid, industrial & civil power distribution | Fire-safe, maintenance-free high-reliability power solution |
Hengfengyou 13.8kV US standard three-phase dry-type distribution transformer integrates high safety, high energy efficiency, low noise, environmental friendliness and maintenance-free core advantages. Supported by 30 years of professional transformer manufacturing experience and rich American-standard project delivery experience, it adopts advanced high-vacuum integral casting technology, high-performance low-loss iron core and intelligent temperature protection system. All technical indicators fully comply with ANSI and IEEE industry standards, perfectly meeting the power distribution demands of modern North American urban power networks, industrial manufacturing and civil construction projects.
This product series has been exported to more than 50 countries worldwide, gaining wide application and high market reputation in North America, Latin America and other American-standard markets. We provide global customers with safe, reliable, energy-saving and long-service-life professional power distribution solutions tailored for various indoor enclosed spaces and fire-sensitive application scenarios.
Q1: What is a 13.8kV US standard dry-type distribution transformer?
A: It is ANSI/IEEE approved cast-resin oil-free flame-retardant transformer specially designed for 13.8kV American-standard power grid, widely deployed in indoor buildings, industrial facilities and fire-critical areas in North America.
Q2: What advantages does 13.8kV US standard dry-type transformer have over oil-immersed type?
A: It features flame retardant, non-toxic, oil-free structure with zero explosion risk, low running noise and maintenance-free operation. It fully complies with strict American power and building safety regulations, serving as the ideal choice for urban indoor and industrial power supply.
Q3: What fire resistance level can it achieve?
A: It reaches F1 fire resistance class, with self-extinguishing, halogen-free, smokeless and non-toxic properties, fully conforming to US NFPA fire protection codes.
Q4: What is its lightning impulse withstand voltage?
A: The 13.8kV model is designed with 95kV lightning impulse withstand voltage, possessing strong lightning defense and grid overvoltage suppression capability.
Q5: Is overload operation permissible?
A: Yes. Equipped with forced air cooling system, it can maintain stable long-term operation under 120% rated load.
Q6: What protection grades are available for selection?
A: IP20 indoor touch-proof type and IP23 outdoor rainproof type are available, and enclosure materials can be customized according to actual project needs.
Q7: Does it require frequent daily maintenance?
A: Basically maintenance-free. Only regular appearance inspection, temperature monitoring and simple dust cleaning are needed.
Q8: What are the main applicable scenarios?
A: North American 13.8kV distribution network, commercial buildings, hospitals, data centers, high-rise buildings and various US-standard industrial plants.
Q9: Which international standards does it comply with?
A: It strictly adheres to core American standards including ANSI C57.12.01, ANSI C57.12.22 and IEEE C57 series, meanwhile compatible with IEC and GB standards, satisfying overseas market access and international project bidding requirements.
