10KVA single phase overhead transformer

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Single Phase Pole Mounted Transformers

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Technical Specification Standards And Certificates Advantages And Applications

The 10 kVA single-phase overhead transformer is a compact, lightweight low-capacity distribution unit, predominantly deployed across rural areas, residential cul-de-sacs, or utilized to energize small-scale commercial infrastructure such as telecommunication towers and highway lighting systems. This unit typically weighs in at roughly 240 to 300 pounds (110 to 135 kilograms).

Core Technical Profile

Technical Feature	Standard 10 kVA Parameters
Rated Capacity	10 kVA at 65°C continuous temperature rise.
Primary Voltage (HV)	Commonly 7,200V, 13,200V, or 14,400V (Up to 34.5 kV Class).
Secondary Voltage (LV)	120/240V split-phase (standard residential output).
Standard Efficiency	Complies with DOE 2016 (≥ 98.3% efficiency) and IEEE C57.12.20.
Insulation & Cooling	ONAN (Mineral oil or eco-friendly FR3 vegetable-ester oil self-cooled).
Typical Losses	Core (No-Load) Loss: 36W \| Coil (Full Load) Loss: 120W.

ANSI C57.12

IEEE

BS171

Physical & Mechanical Profile

Bolt-Type Bushing Connectors: The high-voltage (HV) side utilizes 1 or 2 top-mounted porcelain bushings. The low-voltage (LV) side utilizes 3 side-mounted porcelain or polymer bushings equipped with 13/16" eyebolt connectors on a 3/4" stud. These allow line workers to drop in bare distribution wire and hand-tighten or torque down the terminal nuts effortlessly.
Tank Shell Build: Constructed from cold-rolled steel or 304 stainless steel (for highly corrosive marine environments). The tank diameter is generally a compact 15 to 20 inches with a low-profile height under 3 feet, minimizing the structural real estate needed on a cross-arm.
Interlaced Winding Core: Often wound using a specialized interlaced core-type pattern (using grain-oriented electrical steel or amorphous steel loops). This design offers heightened impedance protection against low-side secondary voltage surges.

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Listed below are answers to our most commonly asked questions. Don't see your question?Contact our customer service team. We would be glad to assist you.

FAQ

Listed below are answers to our most commonly asked questions. Don't see your question?Contact our customer service team. We would be glad to assist you.

Can a transformer be used outdoors?

Yes, many transformers are designed for outdoor use, but they require waterproofing, dustproofing, and protective enclosures to withstand rain, dust, and temperature changes.

Is transformer noise normal?

A slight humming sound during operation is normal, caused by magnetization of the core and windings. However, if the noise is unusually loud or irregular, inspection is required.

What causes a transformer to overheat?

Common causes of transformer overheating include overloading, inadequate cooling, winding short circuits, or insulation aging. Prolonged overheating can shorten lifespan or cause failure.

How often should a transformer be maintained?

It is generally recommended to have a full inspection once a year, including insulation, cables, cooling systems, and oil quality tests to ensure safety and efficiency.

Can a transformer run continuously?

Yes, transformers are designed for long-term stable operation. As long as they run within rated voltage, load, and temperature limits, they can operate safely and continuously.

What is the main function of a transformer?

The main function of a transformer is to change voltage levels. It can step up voltage for long-distance transmission or step down voltage for safe use in equipment and households.

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