10KV SCB18 Dry-type Transformer 50-5000KVA

1. Product Overview

SCB18 series 10kV epoxy resin vacuum cast dry-type transformer is National Class 1 top energy efficiency product, compliant with IEC60076, GB1094 & GB20052-2020 latest energy efficiency standard. Rated capacity ranges from 50kVA to 5000kVA, standard primary voltage 10kV, secondary rated 0.4kV with customizable transformation ratio. Full oil-free epoxy encapsulated design features flame retardant, explosion-proof, zero pollution and ultra-low power loss, developed for global energy-saving power grid upgrading under carbon neutrality goals. Widely deployed in new energy stations, data centers, commercial complexes, urban substations, underground projects, chemical & mining plants.

2. Core & Winding Construction

Iron Core

Made of high-grade high-permeability grain-oriented cold rolled silicon steel sheet with advanced multi-step miter-lap cutting technology, optimized magnetic circuit design sharply cuts no-load loss, no-load current and running noise; core surface coated with anti-rust nano insulating paint for stable long-term operation. No-load loss reduces over 20% vs SCB10 traditional models, core loss far below industry average.

HV & LV Windings

10kV High Voltage Coil: High-purity oxygen-free copper wire wrapped with high-temperature F/H class insulation, integral vacuum epoxy casting, compact structure, extremely low partial discharge (<10pC), excellent moisture-proof, dust-proof and anti-aging performance.

Low Voltage Coil: Small capacity adopts copper wire winding; large-capacity design uses full copper foil winding for uniform current distribution, minimized eddy current loss and balanced temperature rise, greatly improving short-circuit withstand capability.

Epoxy resin reaches F1 fire resistance grade (self-extinguishing, no molten drop when on fire), meeting strict indoor fire safety requirements.

Auxiliary Configuration

Built-in PT100 platinum thermal sensors matched with intelligent temperature controller, realizing automatic cooling fan startup, over-temperature alarm and overheat protection trip. Two cooling options: AN natural air cooling (standard) / AF forced air cooling; under AF mode, transformer can safely bear 120% overload operation temporarily. Optional IP20/IP23 metal protective enclosure to prevent accidental touch and foreign object ingress.

3. Core Competitive Advantages

Top-tier Energy Saving (Class 1 Efficiency)

SCB18 is the highest standard of domestic dry transformer energy efficiency, no-load loss down ~20% and load loss down ~15% compared with SCB13; annual power saving is prominent for long-running distribution projects, effectively lowering clients’ lifetime electricity cost.

Superior Safety & Eco-friendly

Oil-free structure eliminates oil leakage, fire and explosion risks; no waste oil disposal, zero environmental contamination, applicable for indoor enclosed power room, subway and densely populated buildings.

Strong Environmental Adaptability

Stable operation under high humidity, dusty, coastal salt fog and mild corrosive environment; standard working altitude ≤1000m, ambient temperature: -25℃ ~ +40℃, climate grade C1 per IEC standard.

Low Noise & Maintenance-free

Optimized shock absorption & assembly process reduces operating noise; oil-free design cancels periodic oil changing, filtration and leakage inspection, only annual simple dust cleaning needed to cut maintenance expense sharply.

Strong Overload & Anti-short-circuit Performance

Integral cast coil enhances mechanical strength against short-circuit impact; forced air cooling supports 20% short-time overload capacity to cope with sudden load surge.

4. Main Technical Specifications

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

Primary Voltage: 10±2×2.5%kV / ±5% tap change available

Secondary Voltage: 0.4kV or custom non-standard voltage

Frequency: 50Hz, 60Hz customized for overseas market

Insulation Class: F (standard), H (optional for high-temperature environment)

Vector Group: Dyn11 / Yyn0 optional

Protection Grade: IP00(bare unit), IP20 / IP23(with cabinet)

Impedance Voltage: Standard 6%, customizable on request

5. Application Range

PV/wind power booster station, municipal power grid renovation, data center, high-rise residential & shopping mall, subway, hospital, industrial workshop, petrochemical park, mine power distribution, offshore supporting power project.

6. Customization Service

Custom available for special voltage ratio, customized impedance, non-standard outline dimension, anti-corrosion/salt-fog reinforced treatment and tailored cabinet configuration per customer’s site operating condition.