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ANSI C57 Compliant Three Phase Pad Mounted Transformer | 750kVA, Multi-Protection
Product Overview
Leilang Electric 750kVA three phase pad mounted transformer is a heavy-duty distribution solution fully compliant with ANSI C57 standards for North American utility, industrial, and commercial power systems. Engineered as a 750kVA high-capacity unit, it delivers stable, high-power conversion with strong overload capability and long-term durability. Built with a complete multi-protection system including overcurrent, overvoltage, overtemperature, pressure relief, and short-circuit protection, it ensures safe, reliable operation in outdoor environments. Featuring deadfront design, fully sealed oil-immersed structure, low noise, and compact layout, this model combines strict ANSI standard compliance, large 750kVA capacity, and all-round safety protection to meet demanding grid and industrial power requirements.
Key Features & Benefits
ANSI C57 Fully Compliant
Strictly designed, manufactured, and tested to ANSI C57 standards
Meets North American utility and industrial power requirements
No regular oil changes required under normal operation
High mechanical strength & corrosion-resistant housing
25+ years service life with minimal maintenance
Technical Specifications
Brand
Leilang Electric
Type
Three Phase Deadfront Pad Mounted Transformer
Rated Capacity
750 kVA
Standard
ANSI C57, IEEE
Phase
3 Phase
Frequency
50 / 60 Hz
Cooling
ONAN (Self-Cooled)
Efficiency
≥99%
Noise Level
<50 dB
Temperature Rise
≤75 K
Protection Type
Dead Front
Winding Material
Copper / Aluminum
Insulation Class
A / E
Protection Degree
IP20 / IP30 / IP32 / IP40
Operating Temp
-15℃ ~ +40℃
Certifications
ANSI C57, IEEE, CE, ISO
Warranty
24 Months from B/L Date
MOQ
1 Unit
Lead Time
15-25 days
Applications
Utility distribution substations
Large commercial buildings & shopping malls
Industrial plants & heavy manufacturing
Data centers & large-scale backup power
Residential community power supply
Schools, hospitals, and public infrastructure
Renewable energy grid connection
Frequently Asked Questions
Q: Is this 750kVA transformer fully compliant with ANSI C57 standards?
A: Yes. Leilang Electric 750kVA pad mounted transformer is designed, tested, and certified to meet ANSI C57 and IEEE standards for North American market.
Q: What is the rated capacity of this transformer?
A: This model is 750kVA three phase, ideal for high-load commercial, industrial, and utility power distribution.
Q: What types of multi-protection does this transformer include?
A: It provides complete multi-protection: overcurrent, short-circuit, overvoltage, overtemperature, pressure relief, and fully sealed insulation protection.
Q: Is this a deadfront type transformer?
A: Yes. It uses deadfront design with no exposed live parts, greatly improving safety for public areas and maintenance personnel.
Q: Does this unit require frequent maintenance?
A: No. Its fully sealed corrugated oil tank isolates oil from air and moisture, enabling maintenance-free operation and long service life.
Q: What kind of cooling system does it use?
A: It uses ONAN self-cooled design, ensuring reliable heat dissipation without fans or extra power consumption.