35KV SCB13 Dry-type Transformer 50-5000KVA

1.Product Overview

SCB13 series 35kV dry-type transformer is an epoxy resin cast dry-type power transformer developed in compliance with international IEC standards and domestic electrical specifications,covering rated capacity ranging from 50kVA to 5000kVA,with primary rated voltage 35kV and customizable secondary voltage configurations as per customer grid requirements.It adopts advanced vacuum epoxy casting technology for core and coil encapsulation,eliminating flammable transformer oil,which classifies it as environment-friendly,flame-retardant and maintenance-free power distribution equipment widely applied in urban substations,industrial parks,commercial complexes,underground projects,mines and new energy power stations.

2.Core Structural Features

2.1 Iron Core

The core is stacked with high-grade cold-rolled oriented silicon steel sheet,adopting full miter cutting and multi-step lap joint structure.It effectively reduces no-load loss,no-load current and running noise;core surface is coated with insulated anti-rust paint to improve corrosion resistance and operational stability.

2.2 High&Low Voltage Windings

HV Winding(35kV side):High-voltage coils use high-quality oxygen-free copper wire wrapped with high-temperature resistant insulating material,integrally cast with epoxy resin under full vacuum condition.Compact casting structure prevents moisture infiltration and partial discharge.

LV Winding:Foil-wound copper structure for large-capacity models above 1000kVA;small-capacity products adopt copper wire winding.Uniform current distribution reduces eddy loss and temperature rise during full-load operation.

Epoxy resin casting body features high mechanical strength,crack resistance and outstanding insulation performance,adapting to humid,dusty and harsh operating environments.

2.3 Auxiliary Configuration

Equipped with built-in PT100 temperature sensing probes matching intelligent temperature control fan system;axial cooling air ducts reserved inside coils for natural air cooling(AN)or forced air cooling(AF).Optional IP20/IP23 protective metal enclosure to avoid accidental touch and foreign object intrusion.

3.Key Performance Advantages

High Energy Efficiency(SCB13 Efficiency Grade):Complies with latest national&international energy efficiency standards,ultra-low no-load loss and load loss compared with SCB10/SCB11 older generations,greatly cutting long-term power consumption and operating cost for end users.

Excellent Safety&Fire Resistance:Epoxy resin is self-extinguishing without combustion dripping;no risk of oil leakage,explosion or fire hazards,suitable for indoor enclosed power distribution rooms and densely populated areas.

Strong Environmental Adaptability:Free from oil pollution,no waste oil disposal needed;can run normally at altitude≤1000m and ambient temperature from-25℃to+40℃,moisture-proof and anti-fouling for coastal damp&chemical factory corrosive atmosphere.

Low Operation Noise:Optimized core and winding structure plus damping buffer design,running noise is far below national limit value,friendly for residential surrounding environment.

Low Maintenance Cost:Oil-free design removes periodic oil filtering,oil replacement and leak inspection work;only regular surface dust cleaning is required,saving post-operation maintenance expense.

4.Main Technical Parameters Range

Rated Capacity:50kVA,80kVA,100kVA,160kVA,200kVA,250kVA,315kVA,400kVA,500kVA,630kVA,800kVA,1000kVA,1250kVA,1600kVA,2000kVA,2500kVA,3150kVA,4000kVA,5000kVA

Primary Voltage:35±2×2.5%kV(standard tap range,customizable tapping)

Secondary Voltage:0.4kV/other customized low voltage

Insulation Class:F/H class optional

Cooling Mode:AN(Natural Air Cooling),AF(Forced Air Cooling)

Protection Grade:Bare transformer IP00;with cabinet IP20/IP23

Frequency:50Hz/60Hz for overseas customization

5.Application Fields

Widely used for power transformation in photovoltaic/wind power booster stations,urban municipal power grids,high-rise buildings,shopping malls,underground subway projects,chemical plants,metallurgical enterprises,data center power distribution systems and industrial manufacturing workshops.

6.Customization Service

We support non-standard customization including special voltage ratio,special impedance voltage,low-noise upgrade,special installation dimension,anti-humidity&anti-corrosion reinforced treatment and special enclosure design according to clients’site working conditions and grid technical requirements.