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75KVA Single Phase Pad Mounted Transformer

A compact, code-compliant 75 kVA pad-mounted transformer engineered for underground distribution and building-service vaults. Designed for low losses and quiet operation, this unit prioritizes operator safety with dead-front compartments, easy field access, and optional high-fire-point dielectric fluid. Ideal where footprint, reliability and strict efficiency/UL listing are required.

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Product Accessories

Digital Supervisory Interface: Monitors transformer performance in real time.

Automated Load Tap Adjustment Module: Enables seamless voltage control under varying loads.

Oil Filtration & Condition Assessment Kit: Optimizes oil purity and insulation integrity.

High-Voltage Terminal Block Assembly: Provides secure, customized connectivity.

Dual Thermal & Pressure Sensor Suite: Continuously tracks operational conditions.

Vibration Absorption Isolation Kit: Minimizes mechanical stress for enhanced durability.

Surge Voltage Suppression Unit: Protects against transient overvoltage events.

Advanced Data Logging System: Records operational metrics for performance analysis.

Robust Grounding & Bonding Assembly: Ensures safe, reliable installation.

Comprehensive Installation & Maintenance Guide: Offers detailed support for setup and upkeep.

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Product Specifications

Rated power

75 kVA (single-phase)

High-voltage nominal

selectable 7.2 / 12.47 / 13.8 / 24.94 / 34.5 kV (custom taps available)

Low-voltage nominal

240/120 V (or 480/277 V options)

Cooling method

ONAN (natural oil, natural air); optional KNAN/vegetable-oil or FR3 fill.

Standards & compliance

Designed to IEEE C57 pad-mounted series and built for DOE-2016 efficiency targets; UL/cUL listed options.

Impedance (typical)

2.2–3.5% (application-specific selection for fault level coordination)

HV BIL / LV BIL (typical)

125 kV / 30 kV (configurable by rating and site requirements)

Core & winding materials

low-loss silicon steel core; aluminum or copper winding by request

Insulating fluid volume

~260 L (varies with configuration and radiator options)

Sound & temperature

designed for ≤ 50 dB(A) at 1 m (quiet vault operation) and top-oil rise ≤ 65°C under rated load

Product Applications

Economy is more affordable

Supports reliable power distribution for railways, metro systems, and airport transit hubs.

Critical Transportation Networks
Supplies consistent, high-quality power for manufacturing and processing plants.

Heavy Industrial Facilities
Seamlessly integrates wind and solar installations into existing grids.

Distributed Renewable Energy Systems
Enhances city grid stability with precise voltage regulation.

Urban High-Voltage Substation Upgrades

Product Advantages

Low lifecycle cost via high efficiency

Engineered to exceed DOE-2016 efficiency thresholds with minimized no-load and load losses — reduces electricity waste over decades of service.

Field safety and maintainability

Dead-front construction, IR windows, external gauges, and tool-accessible load-break switches let crews inspect and isolate equipment without exposing live conductors.

Fire-safe fluid option and extended insulation life

Natural-ester fluids (FR3® or equivalent) are available to significantly raise flash/fire points and improve biodegradability — a clear benefit in vaulted or populated sites.

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 75KVA Pad Mounted Transformer 75KVA Single Phase Pad Mounted Transformer

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