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20KV Oil Immersed Transformer

Voltage Range: 11KV – 33KV Power Capacity: 50KVA – 20MVA High Efficiency: Up to 99.7% (Reduces Grid Losses) Installation Types: Ground Mounted | Pole Mounted | Platform-Mounted,etc.

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隐藏域元素占位

Field of application

Residence

Industry and commerce

Energy Storage

Photovoltaic power generation

Metal melting

State Grid

Product Introduction

AISITE 20kV Oil-Immersed/ Oil-filled Transformers offer a cost-effective solution for your network. Whether it is for managing a urban or rural network, or for simply improving your energy efficiency, or optimized cost efficiency solution to connect power plants to supply systems or to link together networks with different voltage levels, we have the mature solution for any transformer application. Ground mounted, pole mounted or high-efficiency oil type transformers all form part of our extensive range.

Features

Advantage
Strong heat dissipation performance, suitable for outdoor and harsh environments.
The winding is immersed in insulating oil to improve insulation performance and protect internal components.
The insulating oil of oil-immersed transformers has high heat capacity and dielectric strength.
The vacuum drying and oil filtering and oil filling process are used to reduce moisture.
High efficiency
Oil-immersed transformers have high working efficiency. Since the insulating oil can provide a good cooling effect, the temperature of the winding inside the transformer is effectively controlled, thereby improving the operating efficiency of the transformer. In addition, the oil-immersed transformer also has low losses, can achieve high energy conversion efficiency, and reduce energy waste.
Reliability
Oil-immersed transformers perform well in terms of reliability. The insulating oil plays a good insulating role inside the transformer, which can effectively isolate the windings and prevent faults such as arcing and discharge. At the same time, the insulating oil can also stabilize the temperature and prevent the transformer from overheating, thereby increasing the life of the equipment. In addition, the noise and vibration levels of the oil-immersed transformer are relatively low, which helps to reduce the mechanical stress of the equipment and improve the reliability and stability of the equipment.
Safety
Oil-immersed transformers also have advantages in safety. Due to the good insulation properties of the insulating oil, electric shock accidents can be prevented to a certain extent. At the same time, oil-immersed transformers are usually equipped with complete safety protection measures, such as overload protection, short-circuit protection, etc., to ensure the safe operation of the equipment.

Technical Specification

Model	Rated power (kVA)	Rated primary voltage (kV)	Tapping (%)	Rated secondary voltage (no-load) (kV)	Vector group	No-load losses (W)	No-load current (%)	Rated impedance (%)
S13-M-30	30	6/6.3/10/10.5	±2×2.5 ±5	0.4	Yyn0 Dyn11	80	2.3	4
S13-M-100	100	6/6.3/10/10.5	±2×2.5 ±5	0.4	Yyn0 Dyn11	150	1.8	4
S13-M-200	200	6/6.3/10/10.5	±2×2.5 ±5	0.4	Yyn0 Dyn11	240	1.5	4
S13-M-400	400	6/6.3/10/10.5	±2×2.5 ±5	0.4	Yyn0 Dyn11	410	1.3	4
S13-M-500	500	6/6.3/10/10.5	±2×2.5 ±5	0.4	Yyn0 Dyn11	480	1.2	4
S13-M-800	800	6/6.3/10/10.5	±2×2.5 ±5	0.4	Yyn0 Dyn11	700	1.0	4.5
S13-M-1000	1000	6/6.3/10/10.5	±2×2.5 ±5	0.4	Yyn0 Dyn11	830	1.0	4.5
S13-M-1250	1250	6/6.3/10/10.5	±2×2.5 ±5	0.4	Yyn0 Dyn11	970	0.9	4.5
S13-M-1600	1600	6/6.3/10/10.5	±2×2.5 ±5	0.4	Yyn0 Dyn11	1170	0.8	4.5
S13-M-2000	2000	6/6.3/10/10.5	±2×2.5 ±5	0.4	Yyn0 Dyn11	1510	0.8	Customized
S13-M-2500	2500	±2×2.5 ±5	0.4	0.4	Yyn0 Dyn11	1780	0.7	Customized
S13-M-3150	3150	±2×2.5 ±5	0.4	0.4	Yyn0 Dyn11	2100	0.7	Customized

Production Process

FAQ

Q: How safe are oil-immersed transformers, particularly regarding fire risk?

A: Modern designs ensure safety. They use fire-resistant insulating oils (e.g., mineral oil meeting IEC 60296 or biodegradable ester fluids) within robust, sealed tanks. Pressure relief devices activate safely during internal faults, and designs comply with strict international safety standards (IEC).

Q: Is oil leakage a concern, and what maintenance is required?

A: Our transformers feature fully sealed construction (e.g., corrugated tanks or welded conservator tanks), minimizing leakage risk. High-quality insulating oil maintains stable chemical properties under normal operation. Maintenance primarily involves periodic oil sampling/testing and condition monitoring, reducing long-term upkeep.

Q: How are oil-immersed transformers protected during shipping?

A: We provide export-grade packaging: robust wooden crates, internal bracing/shock absorption, oil level monitoring, pressure gauge protection, and desiccants. Detailed transport and handling instructions ensure secure delivery.

Q: Are special foundations or space requirements needed for installation?

A: A level, robust foundation is essential to support the weight and minimize vibration. We supply precise dimensional drawings, foundation specifications, required clearances (safety zones), and ventilation guidelines for proper site preparation and installation.