160kva 200kva 35kv 400v Oil Immersed Transformer

160kva 200kva 35kv 400v Oil Immersed Transformer

1. Product Description

The 160kVA & 200kVA 35kV 400V oil immersed transformer is a conventional high-efficiency step-down power distribution transformer widely used in medium and high-voltage power supply systems. This 35kV class oil-filled power transformer adopts mature oil-immersed cooling technology, which effectively solves the heat dissipation problem of high-load operation, and stably converts 35kV high-voltage industrial power into standard 400V low-voltage civil and industrial power. As a core equipment for overhead line power distribution and outdoor substation power conversion, this three-phase oil immersed distribution transformer strictly complies with IEC60076 national electrical standards, with stable voltage conversion performance and strong environmental adaptability.

Manufactured with high-quality grain-oriented cold-rolled silicon steel sheets and oxygen-free copper windings, the 160kVA/200kVA 35kV to 400V oil immersed power transformer effectively reduces no-load loss and load loss, achieving energy-saving and low-consumption operation. The fully sealed oil tank structure prevents insulating oil deterioration and external dust and moisture intrusion, greatly extending the service life of the equipment. It is a mainstream energy-saving power transformation device for rural power grid renovation, industrial park power distribution, and municipal power supply projects, and can adapt to long-term continuous operation in various harsh outdoor and indoor power environments.

2.Technical Parameters

3. Core Purpose

The core function of the 160kVA and 200kVA 35kV 400V oil immersed transformer is to complete safe and efficient voltage step-down conversion in medium-voltage power distribution systems, realizing the conversion from 35kV high-voltage power grid electricity to 400V low-voltage power that meets the requirements of terminal electrical equipment. As a key step-down transformer for medium and small power loads, it undertakes the core tasks of power voltage regulation, power distribution and power grid buffer protection.

This oil-filled distribution transformer can effectively stabilize output voltage, suppress grid harmonic interference, and improve power supply quality. It can match the power demand of small and medium-sized loads, solve the problem of mismatched voltage levels between high-voltage power grids and terminal equipment, and provide continuous and stable power guarantee for various production, living and public facility electrical systems. At the same time, it can also play a role of overload protection and isolation protection in the power supply circuit, reducing the risk of equipment damage caused by voltage fluctuation and current surge.

4. Application Scenarios

The 160kVA 200kVA 35kV 400V oil immersed power transformer has strong scene adaptability, suitable for almost all medium and small-scale 35kV power distribution occasions, and is the preferred power transformation equipment for outdoor and indoor conventional power supply projects:

• Rural and Urban Power Grid Renovation: It is widely used in rural power grid upgrading, urban community power distribution and street power supply projects, adapting to decentralized residential power load and meeting daily lighting and household electrical power demand.

• Small and Medium Industrial Parks: Suitable for small processing factories, workshop production lines, industrial zone supporting power distribution, providing stable 400V industrial power for mechanical equipment, production lines and auxiliary electrical facilities.

• Public Infrastructure: Applied in school campuses, hospital supporting power systems, shopping malls, station terminals and other public places, ensuring continuous and safe power supply for public service facilities.

• Outdoor Independent Substations: Adaptable for field outdoor substation, overhead line power distribution and remote regional power supply, with excellent rainproof, dustproof and corrosion resistance, suitable for long-term outdoor unattended operation.

• New Energy Supporting Power Distribution: Matched with small photovoltaic power stations, wind power decentralized power generation projects, completing grid-connected voltage conversion and power distribution work of new energy power generation equipment.

• Mining and Remote Engineering Projects: Suitable for temporary power supply of mining sites, road construction projects and remote engineering operation sites, adapting to complex and harsh field power supply environments.

5. Product Features

The 160kVA & 200kVA 35kV/400V oil immersed transformer has obvious advantages in energy saving performance, structural design, operating stability and service life, and is more adaptable to domestic and foreign medium-voltage power distribution environments compared with traditional transformers:

• High-efficiency Energy-saving Performance: The core adopts high-permeability grain-oriented cold-rolled silicon steel sheets with full-oblique lap stacking process, which greatly reduces magnetic leakage and no-load loss. The oxygen-free copper winding with precise winding technology reduces resistance loss, realizing low energy consumption and high efficiency operation, and effectively reducing long-term operation power consumption cost.

• Stable Voltage Conversion: Adopts Dyn11 advanced connection group design, which can effectively suppress power grid harmonics, balance three-phase voltage, reduce voltage fluctuation, and ensure stable 400V low-voltage output. The built-in voltage regulation device supports multi-range voltage adjustment, adapting to different grid voltage fluctuation conditions.

• Durable Sealed Structure: The overall fully sealed oil tank structure is adopted to completely isolate insulating oil from external air, avoid oil oxidation and moisture ingress, prevent internal component corrosion and insulation aging, and greatly extend the service life of the transformer. The corrugated oil tank design realizes automatic expansion and contraction with temperature changes, avoiding internal pressure overload.

• Strong Environmental Adaptability: The whole machine is treated with anti-corrosion, rust-proof and rain-proof spraying, which can adapt to high temperature, low temperature, humid and dusty harsh environments. The ONAN oil immersed self-cooling mode has no fan noise, low operation failure rate, and is suitable for long-term unattended continuous operation.

• Safe and Reliable Operation: Equipped with over-current, over-voltage and overload protection functions, with strong short-circuit resistance. The insulation performance meets 35kV high-voltage safety standards, with high insulation strength and low breakdown risk, effectively ensuring the safety of power grid and terminal equipment.

• Convenient Installation and Maintenance: Integrated compact structural design, small floor area, flexible installation in indoor distribution rooms and outdoor foundation stations. The standardized component design makes daily inspection, oil replacement and fault maintenance more convenient, reducing later operation and maintenance costs.

6. FAQ (Common Questions)

Q1: What is the difference between 160kVA and 200kVA 35kV 400V oil immersed transformers in actual use?

The core difference lies in the rated load capacity and applicable load scenarios. The 160kVA oil immersed transformer is suitable for small-load power supply scenarios such as rural communities, small shops and single small workshops, with lower no-load and load loss and more energy-saving operation for light load. The 200kVA oil immersed distribution transformer has larger bearing capacity, suitable for medium-load scenarios such as small industrial parks, multi-workshop factories and medium-sized public facilities, which can meet higher instantaneous power demand. Except for the capacity and loss parameters, the two models have the same voltage level, cooling mode and structural design, with consistent installation and maintenance standards.

Q2: Can this 35kV 400V oil-filled transformer operate outdoors for a long time?

Yes, this 160kVA/200kVA oil immersed power transformer is specially designed for outdoor operation. The whole machine adopts high-strength steel plate welding and anti-corrosion electrostatic spraying process, with good rainproof, snowproof, dustproof and anti-aging capabilities. The fully sealed oil tank structure can effectively prevent rainwater and moisture from entering the interior, and the oil-immersed self-cooling system can adapt to natural temperature changes in outdoor environments. It can operate stably for a long time in outdoor open substations and overhead line power distribution points, and basically does not need manual maintenance in daily operation.

Q3: What are the key maintenance items for 35kV 400V oil immersed transformer in daily operation?

Daily maintenance is simple and manageable. First, regularly check the oil level and oil quality of the transformer to ensure the insulating oil is clear and the oil level is within the standard range, and replace deteriorated insulating oil in time. Second, regularly clean the dust and sundries on the surface of the oil tank and heat dissipation corrugations to ensure smooth heat dissipation. Third, check the tightness of wiring terminals and the integrity of sealing parts to avoid oil leakage and poor contact. Fourth, regularly test the insulation resistance and operating temperature to ensure no overload operation. Under standard maintenance conditions, the service life of the transformer can reach more than 20 years.