HENTG POWER ONAN 100kVA 13.8kV/240V Single-Phase Transformer for Underground Distribution

The HENTG POWER 100kVA Single-Phase Pad Mounted Transformer is a high-quality oil-filled distribution transformer designed for underground power distribution in North America. Ideal for residential neighborhoods, commercial buildings, light industrial facilities, and utility projects, this transformer provides reliable, safe, and energy-efficient power.

Equipped with ONAN (Oil Natural Air Natural) cooling and a fully sealed pad-mounted design, it ensures long service life, low maintenance, and maximum safety, even in harsh outdoor environments.

Keywords: pad mounted transformer, single-phase transformer, 13.8kV transformer, residential transformer, distribution transformer, oil-filled transformer.

• Single-Phase 13.8kV/240V Output: Perfect for North American split-phase distribution, supporting homes, commercial loads, HVAC, refrigeration, and light industrial applications.

• Pad-Mounted Installation: Safe, compact, and suitable for underground cable systems, reducing visual impact and installation complexity.

• Dead-Front Design: Eliminates exposed live parts for maximum operator and public safety, fully compliant with ANSI/IEEE standards.

• Dual Protection Fuses: Bayonet fuse plus backup current-limiting fuse provides overload and short-circuit protection, improving reliability.

• High Efficiency & Low Loss: Advanced core materials reduce no-load and load losses, meeting DOE energy efficiency standards.

• ONAN Cooling System: Passive oil cooling ensures stable operation without external power, reducing maintenance costs.

• Fully Sealed Oil Tank: Prevents moisture ingress and oil oxidation, extending transformer life. Optional FR3 natural ester oil available for fire resistance and environmental safety.

• Flexible Feed Configuration: Supports radial and loop feed systems, compatible with modern underground distribution grids.

• Harsh Environment Adaptability: Designed for high temperature, high humidity, and dusty conditions, ideal for residential, commercial, and industrial installations.

Yes, our pad mounted transformers are designed according to ANSI, IEEE, and DOE standards, ensuring full compatibility with North American power systems.

Absolutely. This single-phase 120/240V output transformer is widely used in residential neighborhoods, apartment complexes, and small commercial buildings.

It includes bayonet fuse and backup current limiting fuse, providing comprehensive overload and short-circuit protection.

Yes, we offer FR3 natural ester oil as an option, which is biodegradable, fire-resistant, and environmentally friendly.

Yes, we support custom design, including:

• Voltage ratings

• Tap changer

• High ambient temperature design (up to 50°C)

• Anti-corrosion solutions

Standard delivery time is 4–6 weeks, depending on configuration and order quantity.

HENTG POWER is a leading manufacturer of distribution transformers, pad-mounted transformers, and power transformers serving North America, Latin America, Africa, and Southeast Asia.

Our advantages:

• High efficiency and low-loss transformer solutions

• Custom designs for utility and EPC projects

• Reliable performance under harsh environments

• Strict quality control and ANSI/IEEE/DOE compliance

HENTG POWER – Reliable Power, Engineered for the Future