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75 kVA Single Phase Pole Mounted Transformer

The 75 kVA Single Phase Pole-Mounted Transformer is a field-proven unit engineered for overhead distribution in utility, residential, and light-industrial networks. Certified to IEEE C57.12.20, ANSI C57.12, CSA, IEC, and DOE efficiency standards—and backed by UL/cUL and CESI approvals—it converts primary voltages from 2.4 kV up to 34.5 kV into a stable 277/480 V (or 120/240 V, 347 V, 347/600 V) secondary with subtractive (Ii0) or additive (Ii6) polarity. A five-position off-circuit tap changer (23 963–26 187 V) ensures precise voltage matching. The oil-immersed, ONAN-cooled design maintains reliable 60 Hz operation within a sealed ANSI 70 gray enclosure rated 125 kV/30 kV BIL, delivering 75 kVA continuous with minimal maintenance.

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Product Accessories

External Tap Changer Handle
Lockable lever kit for safe, five-step voltage adjustment.

Porcelain HV & LV Bushings
ANSI-rated, oil-filled HV insulator with dust cap; LV stud bushing with seven-hole pattern.

Pressure Relief & Vacuum Gauge
Auto-vent valve and integrity gauge with alarm contacts.

Oil Fill, Drain & Sampling Valves
Captive-cap bottom drain with sampler; top fill breather assembly.

Support & Lift Lugs
Heavy-duty eyebolts and brackets for secure pole installation.

Grounding Lugs & Copper Strips
Pre-configured earthing kit for rapid on-site bonding.

Bay-O-Net Fuse Holder
External HV fuse compartment for quick fault isolation.

Nameplate & Wiring Diagram
Stainless-steel data plate and door-mounted schematic for easy reference.

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Product Specifications

Rated Power

75 kVA

Primary Voltage

2.4 / 7.2 / 12.47 / 13.8 / 14.4 / 24.94 / 27.6 / 34.5 kV

Secondary Voltages

120/240 V; 277 V; 347 V; 347/600 V; 240/480 V

Tap Range

23 963–26 187 V (±5 %), five positions

Connection Type

Ii0 (subtractive) or Ii6 (additive)

Frequency

60 Hz

Cooling Method

ONAN

No-Load Loss

215 W

Load Loss

720 W

Impedance

2.30 %

Product Applications

Economy is more affordable

Product Advantages

Comprehensive Voltage Range

Supports a wide spectrum of primary and secondary voltages with a versatile tap changer.

High Surge Tolerance

125 kV/30 kV BIL rating and pressure-relief protection ensure resilience to lightning and switching events.

Ready-Stock & Fast Delivery

Standard 75 kVA models are maintained in inventory for rapid dispatch to minimize project delays.

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.