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50KVA Single Phase Pad Mounted Transformer

The 50 kVA Single Phase Pad‑Mounted Transformer is a compact, oil‑filled distribution unit engineered for safe, efficient service in overhead and underground feeder networks. Built to IEEE C57.12.38 and CSA C227.3 standards—and UL/cUL listed—it supports primary voltages from 7.2 kV up to 24.94 kV with precise ±2×2.5 % off‑circuit taps. Its dead‑front or live‑front enclosure houses an additive‑polarity core and aluminum windings immersed in high‑grade mineral oil, delivering 50 kVA at 60 Hz with natural ONAN cooling. With a sealed, tamper‑resistant tank and ANSI 70 Munsell green finish, this transformer blends into residential, utility, and light‑commercial settings while maintaining ≤ 30 kV/150 kV BIL insulation integrity.

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Product Accessories

Bayonet & ELSP Fuse Holders: Dual‑fuse protection modules under hinged front door for rapid access and replacement.

Pressure Relief Valve: Automatically vents excess pressure to safeguard tank integrity.

Magnetic Oil Level Gauge: External sight‑glass with low‑oil alarm contacts for real‑time monitoring.

Drip Tray & Drain Valve: Bottom‑mounted, captive‑cap valve simplifies oil sampling without spillage.

Hinged Access Door & Locks: Secure, lockable panel for maintenance access and anti‑tamper protection.

HV & LV Porcelain Bushings: Oil‑filled, capacitance‑graded bushings with dust caps; LV stud‑type bushing with seven‑hole pattern.

Grounding Lugs & Straps: Copper earthing hardware with spade terminals for reliable grounding.

Nameplate & Wiring Diagram: Stainless‑steel data plate and laminated schematic for field reference.

Tap Changer Handle Assembly: External adapter for five‑position ±2×2.5 % voltage adjustment.

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Product Specifications

Rated Power

50 kVA

Primary Voltage

7.2 kV / 12.47 kV / 14.4 kV / 24.94 kV

Secondary Voltage

120/240 V; 240/480 V; 347/600 V

Tap Range

±2×2.5 % (5 positions, off‑circuit)

Frequency

60 Hz

Cooling Method

ONAN (Oil Natural Air Natural)

Impedance

2.00 %

BIL Rating

30 kV (LV) / 95 kV (HV) / up to 150 kV

Insulating Fluid

Mineral Oil (55 gal)

Efficiency

99.11 %

Product Applications

Economy is more affordable

Steps down neighborhood distribution lines for single‑family homes and apartments.

Residential Feeder Networks
Powers strip malls, small offices, and schools with reliable 240/480 V services.

Light Commercial Sites
Integrates seamlessly into urban and rural loop‑feed configurations for grid resiliency.

Utility Loop/Radial Feeds
Provides interim service at construction sites, outdoor events, and disaster relief camps.

Temporary Power Installations

Product Advantages

Exceptional Energy Efficiency

Meets and exceeds DOE 2016 performance standards, minimizing no‑load and load losses to reduce operating costs.

Versatile Voltage Adaptability

Broad tap range and multiple secondary options accommodate diverse utility requirements without custom redesign.

Robust, Low‑Maintenance Construction

Tamper‑resistant, dead‑front enclosure with ONAN cooling and sealed tank design delivers years of reliable operation with minimal upkeep.

WellDone Power Transformer Plan Drawing

FAQ

What range of transformer products do you offer and which standards do they meet?

We manufacture a diverse array of transformers including Oil-Immersed Distribution Transformers, Dry Type Transformers, Power Transformers, Three Phase Pad Mounted Transformers, Single Phase Pad Mounted Transformers, Substation Transformers, and Pole Mounted Transformers. Our technical team, with nearly 20 years of industry experience, ensures that our designs comply with international standards such as ANSI, IEEE, DOE, CSA, AS, AZS, GOST, IEC, and more. Additionally, many of our products have obtained UL, cUL, and CSA certifications, affirming their safety and performance in global markets.
How do you ensure the quality and reliability of your transformers?

Our transformers are produced under a rigorous quality management system covering every stage from material selection to final testing. Each product comes with a minimum 24-month warranty, ensuring long-term safety and reliability. This commitment to quality has earned the trust of global customers and leading industry players.
What are your production lead times, customization options, and global market reach?

For standard models, our production lead time is typically 10 to 25 days, and we offer flexible OEM/ODM services for customized projects. We also tailor packaging solutions to meet specific customer requirements. Our transformers are exported worldwide—including North America, Europe, South America, Australia, Asia, and Africa—with successful partnerships involving renowned companies. For more details or personalized support, please contact us via email or WhatsApp.

Single Phase Pad Mounted Transformer 50KVA Pad Mounted Transformer 50KVA Single Phase Pad Mounted Transformer

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