10kV Level Oil Immersed Transformer Product Introduction
Ultra-low no-load loss and high energy efficiency
Fully sealed structure to prevent oil leakage and moisture ingress
Strong short-circuit withstand capability
Low operation noise
Excellent heat dissipation and overload performance
Long service life with low maintenance
Comply with IEC and GB standards
Compact structure for flexible installation
High dielectric strength and reliable insulation
Wide capacity range with customizable parameters
1. Product Overview
The 10kV level oil immersed transformer is a conventional and mature power distribution equipment widely used in medium-voltage power grid systems. Adopting mineral oil as the cooling and insulating medium, this three-phase two-winding transformer realizes safe and stable voltage conversion between 10kV high-voltage grid and 0.4kV low-voltage power distribution system. Manufactured in strict accordance with IEC, IEEE and national industrial standards, the product covers S11, S13 and S22 mainstream series models, with optional fully sealed and conservator-type structures.
Different from dry-type transformers, the oil immersed structure features excellent heat dissipation and insulation performance, adapting to long-term continuous outdoor and heavy-load operation. The whole machine is optimized in structural design, with reliable mechanical strength and environmental adaptability, which can effectively cope with complex working conditions such as temperature change, dust and humid environment, ensuring long-term stable power supply for power distribution terminals.
2. Core Product Parameters
The following table lists the universal standard parameters of 10kV oil immersed transformers, covering mainstream capacity models in industrial and civil power distribution scenarios, supporting conventional and customized configuration requirements.
Parameter Item | Technical Specification |
Rated High Voltage | 10kV (optional 10.5kV/11kV) |
Rated Low Voltage | 0.4kV (optional 0.415kV/0.43kV) |
Rated Capacity Range | 30kVA - 2500kVA |
Rated Frequency | 50Hz / 60Hz |
Cooling Method | ONAN (Oil Natural Air Natural) |
Vector Group | Dyn11 (standard), Yyn0 (optional) |
Voltage Tap Range | ±5% / ±2×2.5% (off-circuit tap changing) |
Insulation Class | Class A |
Lightning Impulse Withstand Voltage | 75kV |
Operating Temperature Range | -25℃ ~ +40℃ |
Protection Level | IP44 / IP54 (customizable) |
3. Product Core Features
3.1 Low Energy Consumption and High Efficiency
Equipped with high-quality oriented silicon steel sheet wound core, the product effectively reduces magnetic leakage and no-load loss. Compared with traditional old-model transformers, S13 and S22 series reduce no-load loss by nearly 30% and no-load current by 70% to 85%. The overall operating efficiency is significantly improved, which can effectively reduce long-term operating energy consumption and create obvious energy-saving benefits for users.
3.2 Excellent Insulation and Heat Dissipation Performance
Adopting high-purity mineral insulating oil and multi-layer composite insulation structure, the transformer has strong voltage resistance and aging resistance. The natural oil circulation and air heat dissipation mode realizes uniform internal heat distribution, avoids local overheating under long-term full-load and overload operation, and greatly improves the operation stability of the whole equipment.
3.3 High Structural Reliability
The core and winding are fixed with high-strength structural parts, with strong seismic and anti-deformation ability. The fully sealed tank body adopts seamless welding process, which can effectively prevent external moisture, dust and corrosive gas from entering. It avoids insulation damp and oil deterioration, and the service life of the whole machine can reach more than 20 years under normal operating conditions.
3.4 Low Noise and Strong Adaptability
Optimized core lamination and winding layout effectively reduce electromagnetic noise and mechanical vibration during operation. The product can adapt to various harsh environments such as outdoor open-air, high humidity and low temperature. It has no strict requirements on installation site ventilation conditions, with strong on-site applicability and flexible installation.
4. Application Scenarios
Thanks to its stable performance, low operation cost and wide environmental adaptability, the 10kV oil immersed transformer is the mainstream equipment for medium and low voltage power distribution, covering almost all conventional power supply scenarios:
• Urban and Rural Power Grid Transformation: Used for terminal power distribution of urban residential areas, rural power grids and community power supply, undertaking daily stable power conversion and transmission tasks.
• Industrial Factory Power Supply: Suitable for manufacturing factories, processing plants, mining enterprises and other industrial sites with long-term continuous power consumption and stable load requirements.
• Commercial and Public Facilities: Supporting power supply for shopping malls, office buildings, schools, hospitals and other public buildings to ensure reliable power supply for daily operation and equipment operation.
• New Energy Supporting Projects: Matched with photovoltaic power stations, wind power decentralized grid-connected projects, used for on-site power conversion and grid-connected power distribution.
• Infrastructure Engineering: Widely used in power support for roads, railways, water conservancy projects and temporary construction engineering projects.
5. Product Maintenance & After-sales Service
5.1 Daily Maintenance Guidelines
This type of transformer has low daily maintenance cost, and regular inspection and maintenance can effectively extend the service life and avoid operation faults. Daily inspection mainly includes observing the oil level and oil color of the transformer to ensure no oil leakage from the tank body and welding parts; checking the temperature of the oil tank and bushing to eliminate overheating hidden dangers; cleaning
