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167KVA Single Phase Pole Mounted Transformer

A practical, field-ready 167 kVA single-phase pole-mounted transformer engineered for reliable overhead distribution. Optimized for North American distribution systems, this unit accepts primary voltages across common classes (up to 34.5 kV) and provides versatile secondary outputs (120/240 V, 240/480 V, 277 V, 347/600 Y, etc.). The design follows modern IEEE/ANSI guidance for overhead distribution transformers and is available with mineral oil or FR3 (natural ester) insulation to match site fire and environmental priorities. Low core and copper losses plus a compact weatherproof tank make this model a cost-effective choice for utilities, rural feeders and light industrial spurs.

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Product Accessories

Porcelain HV bushings (2) — oil-filled, with dust caps and provision for HV arresters.

LV terminal studs (2) — 4- or 7-hole LV arrangements for flexible cable termination.

Off-circuit HV Tap Changer (5 positions) — external access for safe voltage adjustment.

Pressure-relief device & vacuum gauge — fast visual and alarm contacts for tank integrity.

Oil fill / drain / sampling valves — captive caps and sampler for safe oil testing.

Lift & support lugs — factory-fit mounting and hoisting points for pole installation.

Nameplate & wiring diagram — stainless steel rating plate and door-mounted schematic.

Optional FR3 fluid charge — factory-filled natural ester for improved fire performance and overload margin.

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Product Specifications

Rated Capacity

167 kVA

Primary (typical)

12.47 kV (other primary classes to 34.5 kV available) — delta or grounded-wye layouts per order.

Secondary (typical)

480Y/277 V (configurable to 120/240 V, 240/480 V, 347/600 Y, 277 V, etc.)

Vector Group

Ii6 (additive) — alternative polarities available to suit system phasing.

Tap Range

Off-circuit, ±2 × 2.5% (five positions) for site voltage trimming.

Cooling

ONAN (self-cooled); fan-assist (ONAF/KNAN) available as option for elevated duty.

No-Load Loss

~272 W (factory test value depends on chosen voltages and materials).

Load Loss (at rated current)

~1,290 W (typical reference for this rating class).

Impedance

~3.0% (affects short-circuit current contribution and voltage regulation).

Insulation & BIL

HV BIL ~95 kV; LV BIL ~30 kV (configurable to project requirements).

Product Applications

Economy is more affordable

Mounted on wooden or steel poles to step down 12.47–34.5 kV feeders to serve clusters of homes, local municipal loads and streetlights. Robust BIL and simple off-circuit tap adjustability make it a dependable choice for variable feeder voltages.

Rural Mainline Tap for Small Town Distribution
Supplies 480Y/277 V distribution to small machine shops, packaging operations and pump stations where footprint, safety and rapid access are critical. The compartmentalized connections and standard LV terminations reduce downtime during maintenance.

Overhead Feed Node for Light Industrial Parks
Converts medium-voltage lines to single-phase service for telecom shelters, remote pump systems or irrigation controllers; optional FR3 fluid improves fire safety near structures.

Distribution Anchor for Remote Telecom or Water-Pump Sites
Paired with local inverter or micro-grid controller, the transformer forms the step-down link from local generation lines (wind or solar central string) to dedicated single-phase site loads and backup systems.

Resilient Line Tap for Renewable Micro-Grids

Product Advantages

Field-Oriented Reliability

Designed to IEEE/ANSI overhead distribution norms with rugged tank and accessory set — fewer site issues, predictable maintenance cycles and straightforward spares management.

Choice of Dielectric — Minimize Risk or Maximize Loading

Offered with either conventional mineral oil for proven, cost-effective service or FR3 natural ester for improved fire performance and increased overload capacity where site rules or safety priorities require it. FR3 gives measurable overload/temperature benefits vs mineral oil.

Low Running Cost, Compact Package

Low no-load and load losses for the rating class reduce lifetime energy cost; compact dimensions and pole-mount design cut civil and footprint expense compared with small substations.

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.