100kva 10kv 400v Oil Immersed Transformer Electrical Transformers

100kva 10kv 400v Oil Immersed Transformer Electrical Transformers

1. Product Overview

The 100kva 10kv 400v Oil Immersed Transformer Electrical Transformers are reliable small-capacity three-phase distribution transformers widely used in global 10kV medium-voltage power grids, rural power renovation, residential power distribution and small industrial power supply projects. Manufactured strictly in compliance with IEC 60076 international power transformer standards and regional electrical industry specifications, this 10kV to 400V step down oil immersed transformer serves as fundamental power conversion equipment for low and medium load power consumption scenarios, delivering consistent voltage regulation and safe power distribution performance.

Designed with a standard 10kV high voltage input and 400V low voltage output configuration, this industrial oil immersed electrical transformer efficiently converts medium-voltage overhead grid power into usable three-phase low-voltage electricity suitable for civil daily power consumption, light industrial equipment operation and public facility power supply. Adopting fully sealed oil immersion cooling technology and high-quality anti-aging mineral insulating oil, the 100kVA oil immersed distribution transformer features stable heat dissipation, low operational loss and excellent outdoor weather resistance. Compared with conventional dry-type electrical transformers, this oil type transformer boasts lower manufacturing cost, stronger overload tolerance and longer continuous operation cycle, making it the most cost-effective power transformation solution for grassroots power grid projects.

Every finished 100kva 10kv 400v oil immersed transformer undergoes complete factory acceptance tests including partial discharge detection, temperature rise testing, short-circuit impact resistance verification and full-load aging inspection. With mature manufacturing technology, balanced three-phase output and minimal maintenance requirements, this energy-saving oil immersed power transformer has become a hot-selling electrical device for urban and rural power grid upgrading, scattered regional power distribution and small-scale industrial power matching projects worldwide.

2. Main Technical Parameters

Below lists standardized and industry-certified technical parameters of the 100kva 10kv 400v Oil Immersed Transformer Electrical Transformers. All performance indicators fully meet international grid access standards and engineering acceptance requirements, supporting project design, bidding application, on-site installation and daily operational monitoring:

3. Core Product Features

This 100kva 10kv 400v oil immersed electrical transformer adopts upgraded energy-saving electromagnetic design and fully sealed industrial structure, effectively solving high energy loss, unstable voltage output and poor environmental adaptability issues of traditional small-capacity transformers. It delivers reliable and cost-effective performance for long-term continuous operation in low and medium-capacity power distribution systems:

3.1 Low Energy Loss & High Energy Saving Efficiency

The transformer core adopts high-permeability grain-oriented cold-rolled silicon steel sheets with full oblique lap joint technology, which effectively suppresses magnetic flux leakage and minimizes no-load iron loss during standby operation. The compact and uniform pure copper winding structure features low internal resistivity, greatly reducing copper loss under rated full-load operation. As an energy-saving oil immersed distribution transformer, it significantly cuts down daily power consumption and grid line loss, bringing long-term energy-saving benefits for rural power grids, residential communities and small industrial users.

3.2 Reliable Oil Immersed Cooling & Sealed Insulation Performance

Filled with environmental-friendly non-PCB anti-aging mineral insulating oil that meets international standards, the 100kVA step-down transformer adopts standard ONAN natural circulation cooling mode. The automatic oil circulation system continuously absorbs and dissipates heat generated by power conversion, ensuring stable internal temperature during 24-hour uninterrupted operation. The fully sealed corrugated oil tank structure isolates internal insulating oil from external air, moisture and dust, preventing oil emulsification, oxidation and insulation aging, and maintaining excellent dielectric performance in humid, dusty and outdoor open-air environments.

3.3 Stable Voltage Output & Strong Anti-interference Ability

Equipped with precision off-load voltage tapping adjustment function within ±5% range, this three-phase electrical transformer can calibrate 10kV input voltage deviation caused by long-distance transmission loss and seasonal load fluctuation, ensuring constant and standard 400V low-voltage output. Optional Dyn11 and Yyn0 vector group designs evenly balance three-phase current, effectively suppress grid harmonic interference and instantaneous voltage surge, and adapt to dynamic load changes of civil electrical equipment and light industrial machinery. It avoids power supply instability and equipment damage caused by unbalanced three-phase load.

3.4 Excellent Weather Resistance & Structural Durability

The whole machine adopts thickened steel plate welding and anti-corrosion electrostatic spray treatment, with outstanding waterproof, dustproof, rust-proof and anti-aging capabilities. This 10kV/400V oil immersed transformer can operate stably in outdoor pole-mounted installation, suburban power distribution stations and humid rural environments all year round. The reinforced internal core and winding structure enhances vibration resistance and short-circuit impact resistance, effectively reducing daily equipment failure rate and improving overall operational safety and stability.

3.5 Ultra-low Maintenance & High Cost Performance

Designed with a simple and reliable mechanical structure, this small-capacity oil immersed power transformer has no vulnerable parts and requires minimal daily maintenance. The fully sealed maintenance-free design extends the replacement cycle of insulating oil, greatly reducing daily inspection workload and later operational and maintenance costs. Compared with dry-type electrical transformers of the same capacity, it features lower procurement cost, stronger overload tolerance and wider application scenarios, achieving ultra-high comprehensive cost performance for grassroots power distribution projects.

3.6 Safe & Low-noise Environmental Operation

Optimized core vibration reduction and winding fixing technology effectively weaken operating vibration and noise, fully meeting urban and rural environmental protection noise standards. Equipped with standard oil level gauge, temperature detector and automatic pressure relief valve, the transformer can monitor real-time operating status. In case of overload, overheating or internal short-circuit faults, the pressure relief device releases internal pressure timely to avoid equipment damage, ensuring safe and stable operation of the entire power distribution network.

4. Core Product Uses

As essential small-capacity power transformation equipment for 10kV power grid systems, the 100kva 10kv 400v Oil Immersed Transformer Electrical Transformers undertake core functions of voltage conversion, decentralized power distribution and power quality stabilization, ensuring safe, efficient and stable operation of low and medium-load power consumption systems:

10kV to 400V Medium-Low Voltage Step-down Conversion: The core function is to convert 10kV medium-voltage grid transmission power into standard 400V three-phase low-voltage power, realizing safe and accurate voltage matching between high-voltage overhead lines and terminal civil, commercial and light industrial electrical equipment.

Decentralized Regional Power Distribution: This oil immersed electrical transformer undertakes decentralized power distribution tasks for rural villages, urban residential communities and scattered small-load areas, reasonably distributing grid power according to actual daily load demand, balancing three-phase load current and reducing power transmission line voltage drop and power loss.

Power Supply Quality Stabilization & Optimization: By adjusting off-load tap positions, the equipment calibrates system voltage deviation caused by long-distance transmission loss and seasonal load changes, stabilizes terminal 400V voltage within standard range, suppresses grid harmonics and three-phase unbalance, and comprehensively improves regional power supply quality and stability.

Power Grid Fault Isolation & Safety Protection: It effectively isolates the upper 10kV medium-voltage main grid and lower 400V low-voltage load system, preventing high-voltage fault surges from spreading to the user side, limiting grid fault scope and reducing terminal electrical equipment damage risks.

Long-term Continuous Power Supply Guarantee: Relying on excellent heat dissipation performance and short-term overload resistance, the 100kVA oil immersed transformer supports 24-hour uninterrupted operation, meeting stable power demand for residential daily consumption, public facilities and small light industrial production.

5. Wide Application Scenarios

With stable performance, compact structure, strong environmental adaptability and high cost performance, the 100kva 10kv 400v Oil Immersed Transformer Electrical Transformers are widely applied in municipal power grids, rural power renovation, light industrial power supply and public infrastructure power distribution projects worldwide:

5.1 Rural & Township Power Grid Renovation

This 100kVA 10kV/400V oil immersed transformer is the most commonly used core equipment for rural power grid upgrading, village centralized power supply and township decentralized power distribution. It effectively solves the problems of insufficient power supply capacity and unstable voltage of aging rural power grids, improving power supply reliability for rural residents and agricultural supporting facilities.

5.2 Light Industrial & Small Workshop Power Supply

Widely used in small mechanical processing workshops, food processing factories, handicraft manufacturing workshops and rural small-scale industrial bases. The 100kVA small load capacity fully meets the long-term stable power demand of light industrial production lines and small mechanical equipment, ensuring uninterrupted industrial production power supply.

5.3 Municipal & Community Public Facilities

Suitable for power distribution of urban small residential communities, village public service centers, rural water pump equipment, street lighting systems and scenic area supporting facilities. Its low-noise, energy-saving and stable operation will not affect daily living and public service environments, fully meeting municipal and rural public infrastructure power supply standards.

5.4 Distributed Small New Energy Projects

Applicable for supporting power transformation and grid connection of small distributed photovoltaic power stations, household wind power generation systems and rural new energy power supply projects. The stable voltage conversion performance effectively balances new energy power fluctuation and ensures smooth grid connection and safe power transmission.

5.5 Short-term Temporary Power Engineering

With compact structure, convenient installation and strong outdoor weather resistance, this oil immersed electrical transformer is commonly used for temporary power guarantee of small construction sites, road maintenance engineering and rural infrastructure renovation projects, providing reliable stable power support for short-term field operation.

6. Frequently Asked Questions (FAQ)

Q1: Why choose 100kVA 10kV/400V oil immersed transformer for rural and small industrial power distribution?

The 100kVA capacity is the most mainstream small capacity for grassroots power distribution scenarios, perfectly matching the daily power load of rural villages, small communities and light industrial workshops without energy waste. As a standard 10kV grade oil immersed electrical transformer, it adopts mature ONAN oil circulation cooling technology, with better heat dissipation and outdoor adaptability than dry-type transformers, supporting long-term outdoor full-load operation. Meanwhile, the standard 10kV to 400V voltage ratio adapts to most global civil power grid standards, featuring low failure rate, simple maintenance and low long-term operation cost, which is the most cost-effective choice for small-scale power grid renovation and light industrial power supply projects.

Q2: What are the practical differences between Dyn11 and Yyn0 vector groups for this 100kVA transformer?

The two vector groups are designed for different grid load characteristics. The Dyn11 connection group has low zero-sequence impedance and excellent suppression effect on three-phase unbalanced load and harmonic current, making it more suitable for light industrial power supply and new energy grid connection scenarios with high power quality requirements. The Yyn0 connection group features simple structure and ultra-stable voltage output, which is more applicable to conventional rural power grids, residential centralized power supply and general public facility power distribution. We can freely configure the vector group according to customers’ on-site grid conditions and actual load types.

Q3: What simple daily maintenance does the 100kva 10kv 400v oil immersed electrical transformer require?

This fully sealed oil immersed transformer belongs to low-maintenance grassroots electrical equipment. In daily operation, users only need to conduct regular visual inspections, check the oil tank sealing condition to prevent insulating oil leakage, and clean dust on the radiator surface to ensure unobstructed heat dissipation. It is necessary to avoid long-term overloaded operation to prevent accelerated insulation aging. Professional staff are recommended to conduct a comprehensive insulating oil quality test and internal performance inspection every 2 to 3 years. With standardized simple maintenance, the equipment can achieve a 25-year stable service life, greatly reducing long-term equipment replacement and operational costs.