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25KVA Single Phase Pole Mounted Transformer

The 25 kVA Single Phase Pole‑Mounted Transformer is engineered for reliable medium‑voltage distribution in overhead network applications. Featuring a 19 920 V primary and 120/240 V secondary, it incorporates a subtractive‑polarity Ii0 connection and five off‑circuit taps (18 924–20 916 V) for precise voltage matching. Housed in a dead‑front, ANSI 70 gray enclosure, the unit uses high‑grade mineral oil and ONAN cooling to maintain optimal temperatures under 60 Hz operation. Its 150 kV/30 kV BIL‑rated tank and porcelain bushings ensure robust surge immunity, while the sealed design resists moisture and contaminants—making it an ideal choice for utilities, rural feeders, and light‑industrial lines.

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Product Accessories

Tap Changer Lever Assembly: External handle for five‑position voltage adjustment.

Pressure Relief Valve: Automatic venting to protect tank integrity under fault conditions.

Oil Fill & Drain Valves: Bottom‑mounted drain with sampling port and top‑fill breather.

HV Porcelain Bushing: 150 kV BIL, oil‑filled insulator with dust cap.

LV Stud‑Type Bushing: Seven‑hole termination for 120/240 V connections.

Lift & Support Lugs: Integrated eyebolts and brackets for secure pole mounting.

Grounding Terminal Kit: Copper spade lugs and straps for reliable earthing.

Drip Tray: Removable pan to collect condensate and oil drips.

Nameplate & Data Tag: Stainless‑steel plate with electrical ratings and schematic.

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Product Specifications

Rated Power

25 kVA

Primary Voltage

19 920 V

Tap Range

18 924–20 916 V (±5 %)

Secondary Voltage

120/240 V

Connection Type

Ii0 (Subtractive polarity)

Frequency

60 Hz

Cooling Method

ONAN

BIL Rating (HV/LV)

150 kV / 30 kV

No‑Load Loss

115 W

Load Loss

260 W

Product Applications

Economy is more affordable

Product Advantages

Field‑Friendly Voltage Control

Off‑circuit taps enable quick voltage adjustments without energizing the transformer.

High Surge Endurance

Elevated BIL ratings and robust porcelain bushings protect against lightning and switching transients.

Low‑Maintenance Reliability

Sealed ONAN cooling and proven oil preservation minimize routine servicing in remote or hard‑to‑access locations.

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.

25KVA Pole Mounted Transformer 25KVA Single Phase Pole Mounted Transformer Single Phase Pole Mounted Transformer

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