Trafo
1. Level 2 energy efficiency ensures better energy savings, low power loss, and greater electricity savings during long-term operation.
2. Epoxy resin casting, safe and fire-resistant, oil-free and environmentally friendly, with reliable operation.
3. Excellent short-circuit resistance, moisture and dust protection, adaptable to various operating conditions.
4. Low noise, maintenance-free, and long service life.
5. Widely applicable, it is the preferred model for upgrading power distribution systems.
Epoxy resin cast SCB series dry-type transformer.
1. Product Introduction
Three-phase dry transformer Epoxy coated SCB series are high performance switchgear designed to meet the latest national energy efficiency standards. As a core model that meets Energy Efficiency Level 2, it is positioned as energy-saving, efficient, safe, reliable, smart and convenient. It is widely used in the modernization of distribution networks, the integration of new energy sources, the power supply of high-load industrial facilities and the distribution of power in high-tech civil buildings.
It uses a construction with a solid copper foil winding and vacuum epoxy casting, completely replacing the insulating oil used in traditional oil-immersed transformers with a high-strength epoxy composite material. It is oil-free, environmentally friendly, fire-resistant, moisture-proof, and dust-proof. With a modular design and high standardization, it offers fast delivery and customization for operation in high-altitude, low-temperature, high-humidity, salt spray, and other harsh weather conditions.
It has become the preferred product for upgrading urban and rural power grids, equipment replacement, and projects supporting new energy sources. It has been applied in thousands of projects, including photovoltaic power stations, industrial parks, and large civil buildings, and is widely recognized for its stable operation and excellent energy-saving performance.
2. Technical parameters (customizable)
2.1 Main electrical parameters
Element |
Specification |
Notes |
Model |
SKB |
|
Phase |
Three-phase |
|
Rated capacity |
10 kVA-5000 kVA |
Full standard range, customizable non-standard parameters available. |
Rated voltage |
High voltage: 10 kV (±2×2.5%); low voltage: 0.4 kV |
Suitable for protection against grid voltage fluctuations. |
Connection Group |
Dyn11 |
Standard fordistribution transformersSuppresses third harmonics. |
Tap Regulation |
Disconnection from the circuit (standard); under load (optional ±8×1.25%) |
In off state: reliable; under load: voltage regulation without power interruption. |
Insulation class |
Class F (155℃), class H (180℃) (optional) |
Sufficient temperature rise margin, high overload capacity. |
Cooling Mode |
AN/AF, FAF optional |
120% for 2 hours, 150% for 30 minutes at FP |
3. Main Features
3.1 High Energy Efficiency and Low Operating Costs
A 1000 kVA unit can save over 12,000 kWh per year.
Complies with national energy-saving policies and supports subsidies for green building.
Intelligent temperature management optimizes cooling and reduces unnecessary energy consumption.
3.2 High Safety and Multi-Level Protection
Vacuum epoxy casting, UL94 V-0 flame-retardant material, self-extinguishing, non-toxic.
Oil-free design eliminates risks of fire, explosion, and leakage.
Solid copper foil windings withstand short-circuit currents 25 times the rated value.
Extremely low partial discharge slows down insulation aging.
PT100 temperature monitoring system with alarm, shutdown, and automatic fan control functions.
3.3 High environmental adaptability
Fully encapsulated windings offer moisture, dust, dirt, and corrosion resistance.
Resistant to coastal salt fog, high humidity, dusty environments, and chemical exposure.
Wide temperature range and customizable for operation in plateau and low-temperature conditions.
Silent version with noise level ≤45 dB for hospitals, laboratories, and offices.
3.4 Intelligent and maintenance-free
Oil-free design requires no oil changes, oil level checks, and virtually no maintenance.
Compact, lightweight, easy to connect, supports indoor/outdoor installation and distribution box mounting.
3.5 High cost performance and customizability
Established mass production ensures competitive pricing.
Customizable parameters: power, voltage, protection, cooling, noise, corrosion, plateau.
4. Applications
4.1 Civil and commercial buildings
Elite residential buildings, villas, shopping malls, hotels, offices, hospitals, schools, nursing homes.
4.2 Industrial production
Electronics, food industry, textile industry, machinery manufacturing, mining industry, cement industry, chemical plants, industrial parks.
4.3 New energy sources and power grid modernization
Power grid modernization projects, photovoltaic and wind power installations, auxiliary systems for power plants.
4.4 Public and transportation infrastructure
Subways, high-speed railways, airports, train stations, stadiums, libraries, urban lighting, sewage treatment plants.
4.5 Custom-developed special applications
Plateau regions (plateau type)
Cold regions (low-temperature type)
Laboratories, precision machining workshops (silent models ≤45 dB)
Coastal and chemical zones (anti-corrosion type)


