30KVA 10KV/6KV/35KV Input 400V/380V/220V Output 50Hz Oil Immersed Power Electric Transformer
30KVA 10KV/6KV/35KV Input 400V/380V/220V Output 50Hz Oil Immersed Power Electric Transformer
1. Product Overview
The 30KVA oil immersed power electric transformer is a compact, high-reliability medium and low voltage power distribution transformer engineered for universal power grid and on-site power conversion scenarios. Operating at a standard 50Hz industrial frequency, this versatile unit supports multi-level input voltage options including 6KV, 10KV and 35KV, and delivers flexible low-voltage output of 400V, 380V and 220V, perfectly matching the power consumption standards of civil, commercial and small industrial electrical systems. Manufactured complying with IEC 60076 international standards and domestic power distribution industry specifications, this 50Hz oil immersed distribution transformer adopts mature oil-filled insulation and heat dissipation technology, serving as a cost-effective and stable core device for step-down power conversion in small-load power supply systems.
Different from large-capacity industrial transformers, this 30KVA oil immersed power transformer features a miniaturized integrated structure without redundant configuration, which greatly reduces installation space and equipment investment cost. The whole machine adopts high-purity oxygen-free copper windings and high-permeability cold-rolled oriented silicon steel sheet core, paired with a fully sealed corrugated oil tank structure. The internal core and coil components are completely immersed in high-purity insulating transformer oil, which undertakes dual functions of electrical insulation and circulating heat dissipation. This structural design effectively avoids insulation aging, partial discharge and local overheating problems that easily occur in long-term continuous operation of small transformers.
With adaptive 6KV/10KV/35KV high voltage input and multi-spec low voltage output of 220V/380V/400V, the equipment can flexibly adapt to different regional power grid voltage standards and on-site power demand differences. Whether it is urban and rural conventional power grid distribution, temporary construction power supply or supporting power for small new energy equipment, this 50Hz low-capacity oil immersed electric transformer can maintain stable operating performance, with low noise, low power loss and strong environmental adaptability, and is one of the most widely used small power distribution transformers in the current power industry.
2. Core Product Features
2.1 Multi-Voltage Input and Output Compatibility
This 30KVA oil immersed power electric transformer breaks the limitation of single voltage matching of traditional transformers, supporting three mainstream high-voltage input grades of 6KV, 10KV and 35KV, and covering common low-voltage output specifications of 220V single-phase, 380V and 400V three-phase. The flexible voltage matching design enables a single device to adapt to multiple power grid environments and terminal power equipment voltage requirements, eliminating the need for repeated equipment selection and procurement for different voltage scenarios. Calibrated for standard 50Hz power frequency operation, it ensures stable frequency and voltage output without fluctuation, fully meeting the power supply precision requirements of conventional electrical equipment.
2.2 Ultra-Low Loss and Energy-Saving Operation
Optimized with upgraded silicon steel sheet core stacking process and precise winding turns design, this 50Hz oil immersed distribution transformer effectively suppresses magnetic flux leakage and eddy current loss. Compared with old-fashioned 30KVA power transformers, its no-load loss and load loss are reduced by nearly 30%, with overall operating efficiency up to 98.6%. Long-term continuous operation will not produce excessive power consumption, which effectively reduces the daily operation and maintenance power cost for users. Even under light-load and intermittent operation states common in small power supply scenarios, the equipment can still maintain low energy consumption operation, with outstanding energy-saving and environmental protection advantages.
2.3 Excellent Insulation and Heat Dissipation Performance
Adopting full vacuum oil injection and sealed oil tank technology, the internal insulating oil is completely isolated from air, which prevents oil deterioration and moisture ingress, and maintains stable insulation performance for a long time. The oil circulation heat dissipation system realizes uniform heat conduction of the core and windings, quickly takes away operating heat, and avoids equipment failure caused by local overheating during long-term power-on operation. The multi-stage composite insulation structure enables the transformer to withstand instantaneous overvoltage and lightning surge impact of 6KV, 10KV and 35KV power grids, with extremely low partial discharge value and high operational safety.
2.4 Compact Structure and Strong Environmental Adaptability
Designed with a miniaturized and integrated structure, the 30KVA oil immersed electric transformer occupies a small floor area and supports multiple installation methods such as outdoor pole mounting, indoor foundation installation and box-type substation matching. The shell adopts anti-corrosion and rust-proof electrostatic spraying process, which can resist wind, rain, ultraviolet radiation and light chemical corrosion. It can operate stably in high temperature, low temperature, high humidity and dusty outdoor environments, adapting to complex working conditions such as rural power grids, construction sites and field engineering. The firm mechanical structure also has good seismic and anti-deformation ability, with strong operational stability.
2.5 Low Maintenance and Long Service Life
The fully sealed oil tank design avoids frequent oil replenishment and dust cleaning work, realizing long-term maintenance-free operation in conventional working environments. The high-quality copper winding has strong conductivity and tensile resistance, not easy to age and damage after long-term power-on and load switching. With standardized daily inspection and maintenance, the service life of this 50Hz multi-voltage oil immersed power transformer can reach more than 25 years, far exceeding the service life standard of ordinary small distribution transformers, greatly reducing equipment replacement and later maintenance costs.
3. Core Functions & Purposes
The core purpose of the 30KVA 50Hz oil immersed power electric transformer is to complete safe and efficient voltage step-down conversion for medium and low voltage power distribution systems. It mainly converts 6KV, 10KV and 35KV high-voltage grid electric energy into usable 220V, 380V and 400V low-voltage electric energy, realizing reliable power transmission and distribution from high-voltage lines to civil and industrial low-voltage terminals.
In municipal and rural power grid systems, this small-capacity oil immersed distribution transformer undertakes terminal voltage reduction and power distribution tasks, solving the problem of mismatched grid voltage and terminal electrical equipment voltage, and ensuring safe and compliant power consumption for users. In temporary power scenarios, it stabilizes output voltage, avoids equipment burnout caused by grid voltage fluctuation and instantaneous current impact, and protects the normal operation of low-voltage electrical equipment, lighting systems and small mechanical equipment.
In addition, the equipment also has the functions of isolating grid circuits, reducing power transmission loss and stabilizing power grid frequency. It can effectively improve the power supply quality of small-load power supply areas, balance regional power load distribution, and provide stable 50Hz frequency power support for various conventional power consumption scenarios, which is the basic guarantee for the safe and stable operation of terminal power distribution systems.
4. Wide Application Scenarios
4.1 Urban and Rural Residential Power Grid Distribution
This 30KVA 10KV/35KV input oil immersed power transformer is widely used in rural power grid renovation, urban community terminal power distribution, suburban residential areas and village centralized power supply projects. The 220V and 380V low-voltage output fully meets the daily lighting, household electrical and small public facility power consumption needs of residents. Its low-noise operation and outdoor weather resistance make it very suitable for pole-mounted outdoor installation in residential areas, without affecting the living environment of residents, and can realize 24-hour stable power supply.
4.2 Small Industrial and Commercial Facilities
It is applicable to small processing factories, workshop production lines, supermarket plazas, street commercial facilities, office buildings and community supporting business areas. For small industrial equipment, ventilation systems and commercial power consumption equipment that require 380V and 400V three-phase power supply, this 50Hz oil immersed electric transformer can provide continuous and stable voltage support. Its strong anti-fluctuation ability can cope with frequent start and stop of small industrial equipment, ensuring the continuity and stability of industrial and commercial power supply.
4.3 Construction and Field Temporary Power Supply
As the preferred equipment for temporary power supply of engineering projects, the transformer is widely used in road construction, municipal engineering, field construction, mining area temporary power consumption and infrastructure construction sites. The flexible 6KV/10KV high-voltage input adaptation meets the power access standards of most field power grids, and the compact structure is convenient for transportation, installation and disassembly. It can stably supply power for construction machinery, welding equipment, on-site lighting and temporary office electrical equipment, solving the problem of unstable temporary power supply in field engineering.
4.4 Public Facilities and New Energy Supporting Projects
The equipment is also suitable for power supply of schools, clinics, scenic area facilities, street lamp engineering and other public infrastructure. In addition, it can be matched with small distributed photovoltaic power generation and miniature wind power generation equipment, completing voltage conversion and grid-connected power regulation for new energy power generation. The stable 50Hz frequency output and multi-voltage matching capability effectively improve the power utilization rate of small new energy projects, and provide reliable power guarantee for public facility operation and new energy decentralized power supply.
5. Frequently Asked Questions (FAQ)
Q1: How to choose the correct input and output voltage mode for the 30KVA 50Hz oil immersed power transformer?
The voltage matching needs to be determined according to the on-site grid input voltage and actual equipment power demand. For conventional urban and rural conventional power grids, the 10KV input + 400V three-phase output mode is the most widely used and universal option. For old industrial zones and mountain field power grids with 6KV line voltage, you can choose 6KV input specification; for partial regional high-voltage grid access scenarios, 35KV input configuration is available. In terms of output, 380V is suitable for three-phase industrial mechanical equipment, 400V is used for standard industrial power distribution systems, and 220V single-phase output matches daily lighting and household electrical equipment. Professional voltage matching can avoid voltage mismatch and ensure power supply efficiency and equipment safety.
Q2: What are the main differences between 30KVA oil immersed transformer and dry-type transformer of the same capacity?
In practical application, the 30KVA 50Hz oil immersed power electric transformer has obvious advantages in cost performance, heat dissipation and environmental adaptability. It adopts oil circulation heat dissipation, with more uniform heat dissipation effect and stronger overload resistance, suitable for outdoor open-air, dusty and humid harsh environments, and the later maintenance cost is lower. The dry-type transformer relies on air cooling, with higher fire safety, but higher equipment cost and weaker outdoor environmental adaptability, mostly used for indoor closed environments such as shopping malls and office buildings with high fire protection requirements. For outdoor power grid distribution, construction temporary power and rural power supply scenarios, oil immersed transformer is the more practical and economical choice.
Q3: What daily maintenance work is required for long-term operation of this multi-voltage oil immersed distribution transformer?
This sealed 30KVA oil immersed transformer has low maintenance requirements, and daily routine inspection is sufficient to ensure long-term stable operation. First, regularly check the transformer oil level and oil quality to ensure no oil leakage and oil deterioration; second, clean the dust and debris on the surface of the radiator and shell to keep the heat dissipation system unobstructed and avoid high temperature operation. Third, regularly detect the grounding resistance and insulation performance to eliminate hidden dangers of insulation aging. In addition, avoid long-term overload operation beyond 30KVA rated capacity and frequent over-voltage impact. Regular simple maintenance can effectively extend the service life of the equipment and ensure stable 50Hz frequency and constant voltage output.
