1250kva 1000 kva Indoor Transformer Oil Immersed Transformer 250kva
1250kva 1000 kva Indoor Transformer Oil Immersed Transformer 250kva
1. Product Description
The 1250kva 1000 kva Indoor Transformer Oil Immersed Transformer 250kva covers three practical indoor-grade capacity specifications: 250kVA, 1000kVA and 1250kVA, serving as reliable medium-voltage power distribution equipment designed specifically for indoor substation rooms, enclosed power distribution centers and indoor industrial power supply environments. Different from conventional outdoor transformers, this indoor oil immersed transformer adopts optimized compact structure, indoor noise reduction design and enhanced sealing treatment, fully meeting fire safety, low noise and stable operation standards for indoor power facilities.
Manufactured in strict accordance with IEC 60076 international power transformer standards, this indoor oil type distribution transformer adopts high-quality cold-rolled grain-oriented silicon steel sheet core and full pure copper winding. Adopting advanced step-lap core stacking and vacuum oil filling technology, the equipment effectively reduces magnetic flux leakage, no-load loss and operating noise, solving the common problems of high power consumption and loud operation of traditional indoor power transformation equipment. It supports common medium voltage levels such as 10kV and 11kV, with standard 400V low voltage output, and adapts to 50Hz and 60Hz global grid frequency, compatible with most indoor industrial and commercial power distribution systems.
Available in mainstream energy-saving series including S11 and S13, this indoor oil immersed power transformer features a fully sealed corrugated tank structure without open conservator design. The closed internal structure effectively isolates insulating oil from air and moisture, preventing oil aging, oxidation and insulation degradation. With professional indoor anti-vibration and noise reduction optimization, the whole machine runs smoothly without harsh vibration, making it highly suitable for long-term continuous unattended operation in closed indoor spaces such as building power distribution rooms and factory indoor substations.
2. Product Features
2.1 Graded Capacity Selection for Indoor Load Matching
This indoor oil immersed transformer series provides three graded capacity options to match different indoor power load demands accurately. The 250kVA model is compact and cost-effective, perfectly suited for small-scale indoor power distribution such as office building power rooms and small workshop indoor power supply. The 1000kVA specification is the most versatile mainstream model, covering medium-load power demands of industrial workshops and commercial complex indoor substations. The 1250kVA high-capacity version reserves sufficient load margin for high-power indoor equipment clusters and peak power consumption periods, ensuring stable power supply under variable load conditions.
2.2 Low Loss & Energy-Saving Indoor Operation Performance
Optimized core and winding structure greatly reduces no-load loss and load loss during long-term indoor continuous operation. Compared with old-generation transformers, the S13 high-efficiency model significantly cuts down daily power consumption, helping enterprises and municipal power stations reduce long-term operation costs. The low no-load current design avoids unnecessary power waste during standby operation, which is especially critical for indoor transformers that run 24 hours a day throughout the year, achieving excellent energy-saving and environmental protection effects.
2.3 Low Noise & Vibration Reduction for Indoor Environment
Different from ordinary outdoor oil immersed transformers, this indoor transformer undergoes targeted vibration damping and noise reduction treatment. The compact core fastening structure and buffer installation design effectively suppress operating vibration and mechanical noise, keeping operating noise at a low level that meets indoor environmental protection standards. It will not cause noise interference to office areas, production workshops and indoor working environments, solving the noise pollution problem of traditional power transformation equipment in closed indoor spaces.
2.4 High Sealing & Low Maintenance Indoor Safety Design
The fully sealed integrated welding tank structure eliminates oil leakage risks and prevents dust, moisture and tiny particles in indoor closed spaces from entering the equipment interior. The internal insulating oil maintains stable insulation and heat dissipation performance for a long time, greatly reducing the frequency of oil testing, oil replacement and daily maintenance. Equipped with standard ONAN natural cooling system, it relies on natural oil circulation and air convection for heat dissipation, with no extra fan noise and no additional energy consumption, realizing low-maintenance and high-safety indoor operation. Meanwhile, equipped with pressure relief protection and temperature monitoring structure, it effectively improves the overall operation safety of indoor power distribution systems.
3. Core Purpose
The core purpose of the 1250kva 1000 kva Indoor Transformer Oil Immersed Transformer 250kva is to complete safe, stable and efficient medium-to-low voltage conversion in indoor power distribution systems. It converts 10kV/11kV medium voltage grid power into standard 400V low voltage usable power for indoor electrical equipment, undertaking core power distribution, voltage stabilization and load balancing tasks for indoor substations and closed power distribution rooms.
As special indoor power transformation equipment, it focuses on solving the pain points of ordinary transformers such as loud noise, poor sealing and high maintenance difficulty in indoor application scenarios. It can effectively stabilize indoor power grid voltage, reduce power transmission loss, balance three-phase current output, and avoid equipment operation failure caused by voltage fluctuation and power instability. With multi-capacity coverage, it can flexibly adapt to small, medium and large indoor power load demands, ensuring continuous, safe and reliable indoor power supply.
4. Application Scenarios
4.1 Industrial Indoor Substation Power Distribution
This indoor oil immersed transformer is widely used in factory indoor power distribution rooms, industrial closed substations and production workshop centralized power supply systems. The 1000kVA and 1250kVA high-capacity models stably support long-term operation of production lines, mechanical equipment and industrial electrical systems, while the 250kVA model is suitable for auxiliary workshop and office area power supply. Its low noise and high stability features fully adapt to closed industrial indoor working environments.
4.2 Commercial & Building Indoor Power Rooms
It is the preferred power transformation equipment for high-rise buildings, commercial complexes, shopping malls, office buildings and institutional indoor power distribution stations. The indoor dedicated low-noise design does not affect indoor office and business environment, and the highly sealed structure avoids equipment failure caused by indoor humid air and dust accumulation. It provides stable power guarantee for building lighting, air conditioning, elevator and weak current systems.
4.3 Municipal & Public Facility Indoor Power Supply
Suitable for schools, hospitals, community service centers and municipal public facility indoor power distribution projects. The safe and low-consumption operation performance meets public building power safety standards, and low-maintenance design reduces daily operation and management pressure of public power facilities. Multi-capacity optional specifications can match different scale public facility power demands flexibly.
4.4 Special Enclosed Power Distribution Projects
Applicable for enclosed power distribution rooms of logistics parks, indoor stadiums, industrial parks and supporting indoor power transformation projects of new energy stations. It adapts to long-term unattended closed indoor operation, effectively ensuring the stability and safety of terminal power supply, and is widely used in various indoor power grid renovation and new construction projects.
5. Frequently Asked Questions (FAQ)
Q1: Why choose oil immersed type instead of dry type for indoor installation?
Although dry-type transformers are common for indoor use, this indoor oil immersed transformer has unique advantages in heat dissipation efficiency, overload resistance and cost performance. The insulating oil circulating cooling system provides better temperature control effect during long-term full-load operation, with lower operating temperature rise and stronger overload tolerance. The fully sealed structure is more resistant to indoor dust and humid air erosion, featuring longer service life and lower long-term maintenance cost. It is more suitable for large-load and 24-hour continuous operating indoor power distribution scenarios.
Q2: How to select 250kVA, 1000kVA and 1250kVA indoor transformer correctly?
The 250kVA indoor oil immersed transformer is recommended for small office buildings, community public facilities and small workshops with light and stable load. The 1000kVA model is the most mainstream choice, suitable for most medium-sized factories and commercial building indoor power rooms with conventional load demands. The 1250kVA high-capacity version is ideal for large industrial workshops, high-density commercial complexes and scenarios with obvious peak power consumption, which can effectively avoid long-term overload operation and reserve sufficient power load margin.
Q3: What safety and environmental advantages does this indoor oil immersed transformer have?
This indoor special oil immersed transformer adopts enhanced sealing structure and professional noise reduction technology, with extremely low operating noise and no oil leakage risk. The internal insulating oil is stable and non-volatile, producing no harmful gas during operation, meeting indoor environmental protection and ventilation safety standards. In addition, it is equipped with over-temperature protection and pressure relief devices, which can automatically respond to abnormal operating conditions, effectively improving the overall safety of indoor closed power distribution systems and supporting long-term reliable indoor operation.
