100kva 34.5kv to 240v/480v single phase Oil Immersed Transformer

100kva 34.5kv to 240v/480v single phase Oil Immersed Transformer

1. Product Description

The 100kVA 34.5kV to 240V/480V single phase oil immersed transformer is a standard ANSI/CSA compliant single-phase distribution transformer engineered exclusively for North American 34.5kV medium-voltage utility power grids. As one of the most widely used medium-capacity oil-filled step-down transformers for outdoor power distribution, this single phase 34.5kV 240/480V oil immersed transformer reliably steps down high 34.5kV overhead line voltage into dual 240V and 480V low-voltage output, fully matching the power demands of light industrial equipment, commercial facilities and high-power residential electrical systems. Manufactured per IEEE C57.12 industry standards and DOE energy efficiency regulations, this oil immersed single-phase power transformer undergoes strict factory testing for insulation performance, load stability and short-circuit resistance to adapt to long-term unattended outdoor operation.

Adopting high-quality low-loss grain-oriented silicon steel core and high-purity copper winding construction, the 100kVA single phase 34.5kV to 240V/480V oil immersed power transformer effectively reduces no-load excitation loss and operational temperature rise under continuous rated load. It features a fully sealed welded steel tank structure and standard ONAN mineral oil cooling system, which isolates internal core and winding components from external dust, moisture and air oxidation, preventing insulating oil aging and insulation degradation. Supporting both pole-mounted and pad-mounted installation, this versatile oil filled distribution transformer delivers balanced performance in energy efficiency, operational stability and cost control, making it a mainstream power transformation solution for suburban, rural and commercial single-phase power grid construction and renovation projects.

2. Main Technical Parameters

Below are the complete standardized technical parameters of the 100kVA 34.5kV to 240V/480V single phase oil immersed transformer. All performance indicators meet NEMA and North American power grid operation specifications, covering rated operating data, loss performance, insulation grade, voltage regulation and environmental adaptability to satisfy conventional distribution and customized engineering application requirements:

3. Core Purpose

The core purpose of the 100kVA 34.5kV to 240V/480V single phase oil immersed transformer is to provide reliable, energy-efficient medium-capacity voltage step-down conversion for 34.5kV medium-voltage single-phase power distribution networks. This practical oil-filled single-phase step-down transformer resolves the voltage mismatch between high-voltage overhead transmission lines and medium single-phase end loads, converting unstable 34.5kV grid voltage into standardized dual 240V and 480V low-voltage power that complies with North American commercial and industrial power supply specifications.

In daily utility grid operation, this single phase oil immersed distribution transformer undertakes key functional tasks including grid voltage stabilization, harmonic suppression and circuit safety isolation. It maintains balanced dual 240V/480V output under variable medium loads, effectively mitigating voltage drop and current surge caused by frequent load switching. Designed for universal medium single-phase power consumption scenarios, it eliminates power supply instability and equipment damage risks caused by insufficient transformer capacity, optimizing the overall power supply quality and energy-saving efficiency of suburban and rural 34.5kV power grids.

4. Application Scenarios

With moderate rated capacity, stable load adaptability and excellent all-weather outdoor performance, the 100kVA 34.5kV/240V/480V single phase oil immersed power transformer covers mainstream medium-load single-phase power supply scenarios in North American power systems. It serves as the preferred power transformation equipment for daily grid operation, renovation and supporting engineering projects:

• High-power Residential Area Power Supply: Ideal for high-end suburban villa communities and centralized rural residential zones with high household power consumption. The 480V voltage output supports high-power household electrical equipment and central air conditioning systems, while 240V output meets daily lighting and conventional load demands.

• Light Industrial Single-phase Distribution: Widely applied in small processing workshops, mechanical maintenance factories, woodworking processing sites and mini light industrial parks. It provides stable long-term power supply for medium-power industrial machinery and production auxiliary equipment.

• Small & Medium Commercial Facilities: Suitable for suburban shopping outlets, community supermarkets, business office buildings and street service centers, reliably supporting commercial refrigeration systems, office equipment and public facility power consumption.

• 34.5kV Urban & Rural Grid Upgrading: Used for old grid reconstruction and capacity expansion of North American standard 34.5kV medium-voltage power grids, replacing outdated high-loss transformers to improve regional power supply capacity and reduce grid operation energy consumption.

• Remote Outdoor Facility Power Supply: Adaptable for field monitoring stations, highway service facilities, scenic area supporting equipment and remote communication base stations, supporting long-term unattended outdoor power supply operation.

• Small Distributed New Energy Grid Connection: Matched with medium-sized residential rooftop photovoltaic power generation systems, completing stable voltage conversion and grid-connected power regulation for decentralized new energy equipment to ensure grid power quality stability.

5. Product Features

This 100kVA 34.5kV to 240V/480V single phase oil immersed transformer adopts mature ANSI-standard manufacturing technology and upgraded energy-saving design. It balances load capacity, operational stability and cost performance perfectly, with comprehensive advantages adapting to complex outdoor operating conditions of modern 34.5kV medium-voltage single-phase power grids:

• Optimized Energy-saving Performance: Equipped with high-permeability low-loss silicon steel core and high-purity copper winding, the equipment minimizes no-load magnetic loss and load copper loss. All loss indicators meet DOE premium energy efficiency standards, effectively reducing long-term grid operation energy consumption and lowering daily operational costs for power supply departments.

• Dual Stable Voltage Output: Professional single-phase winding layout ensures accurate and balanced 240V and 480V dual low-voltage output. The built-in multi-grade off-circuit tap changer flexibly adapts to regional 34.5kV grid voltage deviation, effectively suppressing harmonic interference and voltage fluctuation to guarantee stable terminal power quality.

• Fully Sealed & Durable Structure: Integral fully sealed welded steel tank structure completely isolates internal insulating oil and electrical components from external humid air, dust and corrosive substances. It avoids oil aging, moisture ingress and insulation failure, eliminating common oil leakage faults of traditional transformers.

• Excellent All-weather Adaptability: The whole machine adopts high weather-resistant anti-corrosion electrostatic spraying coating, resisting ultraviolet aging, rain erosion, frost and snow damage. It can operate stably in high temperature, low temperature, high humidity and dusty harsh outdoor environments all year round.

• High Safety & Impact Resistance: Strict 34.5kV high-voltage insulation design with 150kV BIL lightning impulse resistance provides excellent lightning protection, over-voltage resistance and short-circuit impact resistance. The equipment has low operational failure rate and strong overload tolerance, ensuring safe operation of power grids and terminal electrical equipment.

• Flexible Installation & Low Maintenance: Compact and lightweight structure supports both pole-mounted and pad-mounted installation, adapting to different field terrain and construction conditions. The fully sealed design requires no frequent oil replenishment, and standardized internal structure simplifies daily inspection and maintenance work, reducing long-term operation and maintenance costs.

6. FAQ (Frequently Asked Questions)

Q1: Why choose 100kVA 34.5kV 240/480V single phase oil immersed transformer for medium-load power distribution?

The 100kVA single phase oil immersed transformer is a cost-effective medium-capacity model tailored for 34.5kV power grid medium single-phase loads. Compared with small-capacity transformers such as 50kVA and 75kVA, it has stronger overload resistance and more stable operation under commercial and light industrial peak loads, avoiding overheating and shutdown faults caused by load saturation. Different from oversized high-capacity models, it avoids excessive no-load loss and wasted power resources in conventional medium-load scenarios. Its exclusive 240V/480V dual output design perfectly fits North American commercial and light industrial power supply standards, making it the most balanced choice for suburban and rural medium-load single-phase power distribution projects.

Q2: Is this 34.5kV single phase oil immersed transformer suitable for long-term outdoor unattended operation?

Yes, this ANSI-certified 100kVA oil immersed distribution transformer is fully optimized for outdoor unattended working conditions. The fully sealed oil tank structure completely prevents internal insulation damp, insulating oil deterioration and dust accumulation caused by long-term outdoor exposure. The high-strength weather-resistant shell can resist extreme weather impacts including high-temperature aging, low-temperature freezing, heavy rain erosion and wind-sand deposition. The mature ONAN self-cooling system ensures stable heat dissipation under continuous rated load, enabling 24-hour uninterrupted stable operation all year round, which fully meets the long-term unattended operation requirements of outdoor pole-mounted and pad-mounted substations.

Q3: What routine maintenance is required for a 100kVA 34.5kV single phase oil immersed transformer?

This medium-capacity single-phase oil immersed transformer features low maintenance threshold and stable long-term operational performance. Daily routine work mainly includes visual inspection of oil tank sealing points and welding seams to check for oil leakage, and confirmation of normal insulating oil level and oil clarity. Operators need to regularly clean dust and debris on the radiator surface to ensure unobstructed heat dissipation and prevent equipment overheating. It is necessary to periodically test winding insulation resistance and terminal voltage balance, and check the tightness of high and low voltage wiring terminals. Long-term overload operation should be avoided in daily use. With standardized simple maintenance, the equipment service life can stably reach more than 20 years.

|（注：部分内容可能由 AI 生成）