37.5 KVA Single Phase Pad Mounted Transformer Residential ANSI C57 Ultra Low Load Loss
Leilang Electric 37.5 kVA single-phase pad-mounted transformer is a utility-grade power distribution solution engineered to the strictest ANSI C57 series standards, delivering exceptional energy efficiency and long-term reliability for North American 12470V grid systems. Designed to step down 12470GrdY/7200V primary voltage to standard 120/240V secondary power, this unit features an ultra-low load loss of only 590W and 135W no-load loss, achieving an impressive 98.9% overall efficiency that exceeds DOE 2016 mandatory requirements.
Built with a robust Compartmental-Type II dead-front construction and 100% high-purity copper windings, it provides maintenance-free operation for over 25 years in extreme outdoor conditions. Fully certified to UL/cUL, CSA and ANSI/IEEE standards, it is ideal for medium-density residential neighborhoods, small commercial centers, community facilities and rural electrification projects, offering unmatched safety and cost-effectiveness.
| Parameter | Value |
|---|---|
| Rated Capacity | 37.5 kVA |
| Primary Voltage | 12470GrdY/7200V (customizable to 13.8kV/34.5kV) |
| Secondary Voltage | 120/240V (L-N-L) |
| Frequency | 60 Hz |
| No-Load Loss | 135W |
| Load Loss | 590W |
| Efficiency | 98.90% |
| Short-Circuit Impedance | 2% Typical |
| Primary BIL | 95 kV |
| Secondary BIL | 30 kV |
| Winding Material | 100% High-Purity Copper |
| Cooling Method | KNAN (Self-Cooled) |
| Insulation Class | Class E (120°C) |
| Structure | Compartmental-Type II, Dead-Front |
| Feed Type | Loop Feed (radial feed optional) |
| Tap Changer | 5-position hot-stick operable (±2*2.5%) |
| Protection | Bayonet fuses, surge arresters, pressure relief valve |
| Certification | ANSI/IEEE C57, UL/cUL, CSA, DOE 2016 |
| Ambient Temperature Range | -40°C to +40°C |
| Dimensions (W*D*H) | 34.25" * 37.4" * 25.2" (870*950*640 mm) |
| Total Weight | 1433 lb (650 kg) |
- Meets or exceeds ANSI/IEEE C57.12.00, C57.12.28, C57.12.8 and C57.12.29 standards for enclosure integrity and performance
- Third-party tested and UL/cUL listed for North American utility distribution systems
- Compliant with CSA and DOE 2016 efficiency regulations, eligible for energy rebate programs
- Laser-engraved aluminum nameplate with permanent certification and parameter markings
- Industry-leading 590W load loss and 135W no-load loss, 10-15% lower than standard equivalents
- 98.9% overall efficiency reduces annual energy consumption by over 1,200 kWh compared to conventional transformers
- Grain-oriented silicon steel core minimizes hysteresis and eddy current losses
- Long-term energy savings offset initial investment within 5-7 years of operation
- Compartmental-Type II dead-front design eliminates all exposed live parts for maximum safety
- Mild steel enclosure with corrosion-resistant coating and stainless steel hardware
- Domed top surfaces prevent water retention and rust formation
- Tamper-proof locking assembly with captive penta-head security bolt and padlock provision
- KNAN self-cooling system with no moving parts, eliminating fan maintenance
- Fully sealed oil compartment prevents dust and moisture ingress
- All service points (oil level indicator, drain valve, fuses) are ground-accessible
- Electrical grade mineral oil with oxidation inhibitor extends insulation life
- Supports both loop and radial feed distribution systems
- 5-position voltage tap changer compensates for line voltage fluctuations
- Customizable voltage ratings, paint colors and accessory configurations
- Threaded stainless steel lifting provisions for easy transportation and installation
- Medium-density residential neighborhoods and housing developments
- Small commercial centers, strip malls and office buildings
- Community schools, churches and medical clinics
- Rural electrification and agricultural service
- Street lighting and traffic signal systems
- Underground utility distribution networks
A: Leilang Electric's 37.5 kVA pad-mounted transformer fully complies with ANSI/IEEE C57.12.00 (general requirements), C57.12.28 (enclosure integrity), C57.12.8 (pad-mounted transformers) and C57.12.29 (corrosion protection) standards. It is also UL/cUL listed and CSA approved for North American use.
A: With only 590W load loss and 135W no-load loss, this transformer saves approximately 1,200-1,500 kWh of electricity annually compared to standard models. At an average electricity rate of $0.12/kWh, this translates to $144-$180 in annual savings, with cumulative savings exceeding $3,000 over its 25-year lifespan.
A: All Leilang Electric transformers use 100% high-purity copper windings as standard. Copper provides superior conductivity, lower electrical losses and better corrosion resistance compared to aluminum windings, resulting in higher efficiency, longer lifespan and improved reliability.
A: Yes. While the standard configuration is 12470GrdY/7200V primary to 120/240V secondary, we offer custom voltage ratings including 13.8kV, 13.2kV and 34.5kV. We also support custom feed types (loop/radial), paint colors and accessory configurations to meet your specific project requirements.
A: Standard 37.5 kVA units ship within 15-25 business days. All Leilang Electric transformers come with a 24-month comprehensive warranty from the date of shipment, covering all manufacturing defects. We also provide free technical support and replacement of easily damaged accessories.
A: Yes. It features a NEMA 3R weatherproof enclosure and is designed to operate reliably in temperatures ranging from -40°C to +40°C. The corrosion-resistant coating and domed top design provide excellent protection against rain, snow, dust and UV radiation, making it ideal for harsh outdoor environments.
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