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333kVA Single Phase Pad Mounted Transformer | 34.5kV, Multiple Safety Protections, Low TCO
Leilang Electric 333 kVA single-phase pad-mounted transformer is a heavy-duty, high-capacity power distribution solution designed for 34.5kV (34500GrdY/19950V) utility networks, built with multiple safety protections and optimized for low total cost of ownership (Low TCO). This oil-filled, compartmental-type unit steps down 34.5kV high voltage to standard 120/240V secondary power while fully complying with ANSI/IEEE, CSA, and DOE 2016 standards. It features a comprehensive safety system including dead-front construction, pressure relief, surge protection, and tamper-proof security. With high efficiency, long service life, minimal maintenance, and energy-saving performance, it delivers ultra-low long-term operating cost and stable power for large residential, commercial, and industrial applications.
Key Specifications
Parameter
Value
Rated Capacity
333 kVA
Primary Voltage
34500GrdY/19950V (34.5kV)
Secondary Voltage
120/240V (L-N-L)
Frequency
60 Hz
Efficiency
99.43%
No Load Loss
900W
Load Loss
3646W
Cooling
KNAN Self-Cooled
Temperature Rise
65°C
Winding Material
Copper
Sound Level
56 dBA
Structure
Pad Mounted, Compartmental-Type II
Certifications
ANSI/IEEE C57, CSA, DOE 2016, ISO
Operating Temp
-40°C to +40°C
Altitude
Up to 1000 m (3300 ft)
Weight
3637.57 lb
Core Features & Benefits
34.5kV High-Voltage Compatibility - Designed for 34.5kV North American distribution grids with wide voltage compatibility (34500GrdY/19950V input), 5-position external tap changer for stable output, and support for loop feed and radial feed systems
Low Total Cost of Ownership (Low TCO) - 99.43% high efficiency for ultra-low energy loss, low no-load and load loss, fully sealed structure minimizes maintenance, 25+ year service life, no substation required, and copper windings for long-term reliability
ANSI/IEEE & DOE 2016 Compliant - Meets or exceeds ANSI/IEEE C57 standards, complies with DOE 2016 energy efficiency requirements, rugged outdoor enclosure meets IEEE C57.12.28, and factory tested for safety, loss, and thermal performance
Heavy-Duty Outdoor Design - Corrosion-resistant coated steel tank, welded domed top prevents water accumulation, stainless steel hardware and hinges, and all-weather stability in harsh environments
Typical Applications
Large residential communities & high-rise apartments
Shopping malls, supermarkets, and commercial complexes
Hospitals, data centers, and public infrastructure
Industrial plants and small manufacturing facilities
34.5kV underground utility distribution
Areas requiring high capacity and high reliability
Frequently Asked Questions
Is this transformer designed for 34.5kV systems?
Yes. It is specially designed for 34500GrdY/19950V (34.5kV) North American utility grids.
What safety protections are included?
It provides multiple safety protections: dead-front insulation, pressure relief valve, surge arresters, bayonet fuses, tamper-proof lock, and dedicated grounding.
How does it achieve Low TCO?
High efficiency reduces power bills; fully sealed design cuts maintenance; long lifespan lowers replacement cost; no substation needed saves construction expense.
Does it meet North American standards?
Yes. It complies with ANSI/IEEE C57, CSA, and DOE 2016 efficiency standards.
Is it suitable for outdoor harsh environments?
Yes. It operates reliably from -40°C to +40°C with corrosion-resistant, waterproof, and impact-resistant construction.
What is the lead time and warranty?
Standard lead time is 15–25 business days. All Leilang Electric transformers include a 24-month warranty and professional technical support.
