50kVA 10kV Oil-immersed Transformer with Laminated Core

Product Overview

Oil-immersed laminated core transformer adopts the classic laminated core design with mature technology and stable and reliable operation. It uses insulating oil as the insulating medium and is composed of core, coil, voltage regulating switch, oil tank, etc. It is an electrical appliance that changes the voltage and transmits AC power. The core and windings have a solid structure, strong short-circuit resistance, and are adaptable to various complex working conditions. It has the characteristics of small size, low price and strong weather resistance. The structure is flexible and diverse, the appearance is beautiful, and it can meet the needs of different users.

Model meaning

Product features

1. High-efficiency cooling system: Oil-immersed transformers use oil as the main cooling medium to effectively control the temperature of the transformer through oil-immersed self-cooling, oil-immersed air cooling, oil-immersed water cooling or forced oil circulation, which contributes to the stable operation and long-term maintenance of the transformer.
2. Excellent insulation properties: Transformer oil not only plays a cooling role, but also has good insulation properties, reducing insulation distance and cost.
3. Strong short-circuit resistance: the winding and core fastening measures, as well as the non-suspended structure design, can withstand the vibration during transportation and operation.
4. Temperature control: Oil-immersed transformers operate under specified cooling conditions and are equipped with thermometers and possible temperature control systems to monitor the top oil temperature in real time, which usually does not exceed 90°C to ensure that the safety threshold is not exceeded to prevent insulation aging.
5. Low noise: Due to the buffering effect of the transformer oil, oil-immersed transformers make less noise during operation.
6. Winding design: Low-voltage windings usually adopt a cylindrical structure wound with copper foil, and high-voltage windings adopt a multi-layer cylindrical structure to ensure balanced ampere-turn distribution and reduce magnetic flux leakage.
7. Fuel tank design: The fuel tank may adopt a corrugated sheet design, which has a breathing function to compensate for the volume change of the oil due to temperature changes, while preventing the entry of external pollutants.
8. Excellent sealing performance: Oil-immersed transformers focus on sealing performance to prevent oil leakage and the intrusion of external pollutants.
9. Diversity of insulation materials: Use insulating cardboard, cable paper, telephone paper and crepe paper as insulation materials. These materials have good insulation properties and durability and provide different insulation protections.
10. Environmental protection characteristics: Although transformer oil has the possibility of burning, modern oil-immersed transformers will consider environmental protection requirements when designing, such as using vegetable oil as the insulation and cooling medium to meet high environmental protection requirements.
11. Safety protection devices: including explosion-proof tubes, gas relays, etc., to ensure that pressure can be released in time in the event of internal failure to prevent equipment damage.
12. Long-term stability: Oil-immersed transformers have good long-term stability and reliability due to their long-term immersion in insulating oil.

Application environment conditions

Application scenarios

Oil-immersed laminated core transformer is suitable for the following scenarios:

Used as a boost or step-down device in power systems

Power distribution and transmission in industrial areas

Electricity supply and backup power in commercial buildings

Other places that require stable and reliable power supply

Technical Parameters

Quotation standards

GB/T 1094.1 Power transformer Part 1: General provisions

GB/T 1094.2 Power Transformers Part 2: Temperature rise of liquid-immersed transformers

GB/T 1094.3 Power transformers Part 3: Insulation levels, insulation tests and external insulation air gaps

GB/T 1094.4 Power Transformers Part 4: Guidelines for Lightning Impact and Operational Impact Tests of Power Transformers and Reactors

GB/T 1094.5 Power transformer Part 5: Ability to withstand short circuit

GB/T 1094.7 Power Transformers Part 7: Loading Guidelines for Oil-immersed Power Transformers

GB/T 1094.10 Power transformers Part 10: Sound level determination

GB 2536 Unused mineral insulating oil for electrical fluid transformers and switches

GB/T 2900.95 Electrical Terminology Transformers, voltage regulators and reactors

GB/T 4109 Insulating bushings with AC voltage higher than 1000V

GB/T 5273 Terminal blocks for transformers, high-voltage electrical appliances and bushings

GB/T 6451 Technical parameters and requirements for oil-immersed power transformers

GB/T 7595 Transformer oil quality during operation

GB/T 8287.1 Indoor and outdoor post insulators for systems with nominal voltages higher than 1000V Part 1: Tests of porcelain or glass insulators

GB/T 8287.2 Indoor and outdoor post insulators for systems with nominal voltages higher than 1000V Part 2: Dimensions and characteristics

GB 10230.1 Tap changer  Part 1: Performance requirements and test methods

GB/T 10230.2 Tap-changer  Part 2: Application Guidelines

GB/T 11022 Common technical requirements for high-voltage switchgear and control equipment standards

GB/T 13912MetalMetallic coating Technical requirements and test methods for hot-dip galvanized coatings on steel parts

GB/T 13499 Guidelines for Application of Power Transformers

GB/T 15153.1 Telecontrol equipment and systems  Part 2: Working conditions  Part 1: Power supply and electromagnetic compatibility

GB/T 16927.1 High Voltage Test Technology Part 1: General Definitions and Test Requirements

GB/T 16927.2 High Voltage Test Technology Part 2: Measurement System

GB/T 17468 Guidelines for Selection of Power Transformers

GB 20052 Energy efficiency limit values and energy efficiency grades of power transformers