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Leilang Electric 25 kVA single-phase pad-mounted transformer is a utility-grade power distribution solution optimized for North American 13.8kV grid systems, engineered to deliver industry-leading installation efficiency and long-term operational convenience.
Designed to step down 13.8kV primary voltage to standard 120/240V secondary power, this unit features a factory-integrated, pre-tested design that enables fast ground-level installation in hours, completely eliminating the need for pole mounting, aerial equipment or high-altitude construction work.
Fully certified to UL/cUL standards and compliant with ANSI/IEEE C57, CSA and DOE 2016 efficiency requirements, it achieves an impressive 98.9% overall efficiency with only 80W no-load loss and 290W load loss. Built with high-purity copper windings and a robust NEMA 3R weatherproof enclosure, it operates reliably in temperatures from -40°C to +40°C with an ultra-quiet 48 dBA sound level.
1. Fast Ground-Level Installation (No Pole Mounting Required)
Factory pre-wired and fully tested: Arrives ready for immediate cable connection, cutting on-site installation time by 70%
Simple pad mounting: Installs directly on a standard concrete pad, no need for expensive pole structures or foundation work
No aerial equipment needed: Eliminates crane and bucket truck rental costs, reducing project complexity and safety risks
Compact footprint: 840*740*610 mm dimensions minimize space requirements, perfect for tight urban lots
2. Zero High-Altitude Maintenance
All components ground-accessible: Fuses, tap changers, oil level indicators and pressure relief valves are all reachable from ground level
Fully sealed design: Prevents dust and moisture ingress, reducing internal maintenance frequency
Self-cooling KNAN system: No moving parts, eliminating fan maintenance and failure points
24-month comprehensive warranty: Covers all manufacturing defects with free technical support
3. Optimized for 13.8kV North American Grids
Standard 13.8kV primary voltage: Directly compatible with most North American utility distribution networks
5-position voltage tap changer: Allows precise voltage adjustment to compensate for line fluctuations
Loop feed configuration: Supports both loop and radial distribution systems for maximum flexibility
Dead-front primary connections: Ensures safe operation for utility workers
4. Ultra-Quiet & Residential-Friendly
48 dBA ultra-low noise operation: Quieter than normal conversation, ideal for installation near homes and public areas
Biodegradable insulation oil option: Non-PCB, eco-friendly and fire-resistant for enhanced safety
Tamper-proof locking system: Prevents unauthorized access and vandalism
NEMA 3R weatherproof enclosure: Withstands rain, snow, dust and UV radiation
5. North American Full Compliance
UL/cUL listed: Third-party tested and certified for safety and performance
Meets DOE 2016 efficiency standards: Exceeds federal energy efficiency requirements
ANSI/IEEE C57 and CSA compliant: Built to North American utility industry specifications
Laser-engraved aluminum nameplate: Permanent identification with all technical specifications
Typical Applications
Residential neighborhoods and housing developments
Small commercial facilities: convenience stores, offices, retail shops
Rural electrification and farm service
Street lighting and traffic signal systems
Underground utility distribution networks
Renovation and expansion projects
Frequently Asked Questions
Does this 25 kVA transformer require pole mounting or high-altitude work?
No. Leilang Electric's 25 kVA pad-mounted transformer is designed for direct ground installation on a simple concrete pad. All installation and maintenance can be performed safely from the ground, eliminating the need for poles, cranes or bucket trucks.
Is this transformer compatible with 13.8kV utility grids?
Yes. It is specifically optimized for 13.8kV primary voltage, the most common distribution voltage in North America. We also offer custom configurations for 34.5kV, 13.2kV and 12.47kV grids upon request.
How often does this transformer need maintenance?
Its fully sealed, self-cooling design requires only annual visual inspections of oil level and enclosure condition. No routine internal maintenance is needed for the first 10 years of operation, and all service points are accessible from ground level.
What certifications does this transformer have for North American use?
It is UL/cUL listed and fully compliant with ANSI/IEEE C57, CSA and DOE 2016 efficiency standards. All units undergo rigorous third-party testing to meet North American utility-grade requirements.
How loud is this transformer, and is it suitable for residential areas?
It operates at an ultra-quiet 48 dBA sound level, which is quieter than normal background conversation. This makes it ideal for installation near homes, schools and other noise-sensitive areas.
What is the standard delivery time and warranty period?
Standard 25 kVA units ship within 15-25 business days. All Leilang Electric transformers come with a 24-month comprehensive warranty from the date of shipment, including free technical support and replacement of defective parts.
