dry transformer kit
1. Ultra-high efficiency and energy saving: It will greatly reduce your electricity bills over a long period of use and make your use much more convenient.
2. Safe and environmentally friendly, oil-free and fireproof: Epoxy casting, oil-free and fireproof material, can be directly installed in indoor distribution boards, no leakage, explosion-proof and non-pollution.
3. Ultra-low noise, low partial discharge: Iron core with multi-stage welding + vibration reduction design, noise ≤ 50dB (A); partial discharge ≤ 5pC, suitable for high-precision and sensitive environments.
4. Short circuit resistance, high reliability: foil + cylindrical winding, high mechanical strength, high resistance to sudden short circuits, service life of up to 30 years or more.
5. Weather-resistant and maintenance-free: waterproof, dust-proof, pollution- and salt-fog-proof, no oil change/filtration required, extremely low operating and maintenance costs.
6. Intelligent temperature control, easy monitoring: Standard PT100+ intelligent temperature control, support RS485/Modbus, achieving remote monitoring and early warning.
35 kV dry type transformer made of epoxy resin casting.
I. Product Overview
The design utilizes oil-free technology, vacuum epoxy casting, a multi-stage core, and an integrated intelligent temperature control system. It offers the advantages of Level 1 energy efficiency, fire resistance, explosion protection, moisture and dust resistance, short-circuit resistance, and is maintenance-free. It boasts an ultra-long service life, fully meeting the needs of modern power grids for environmentally friendly, low-carbon, safe, intelligent, and automated operation.
II. Key technical parameters (customizable)
Rated voltage: 35 kV (tap from circuit ±2×2.5%) / 0.4 kV
Rated power: 50 kVA-8000 kVA
Connection group: Dyn11 (standard)
Thermal insulation class: class F (155℃)
Cooling modes: AN (natural air cooling) / AF (forced air cooling)
Protection class: IP20 / IP30 / IP40 / IP54 (for outdoor use)
Short circuit resistance: 6% (typical)
III. Main structural and technological features
Key Features: Ultra-low loss and exceptional silence.
The sheet steel used is 0.23-0.27mm thick ultra-high magnetic permeability grain-oriented silica steel sheet, which has high magnetic conductivity and extremely low loss.
Nine-step step-lap connection technology and step-lamination ensure uniform magnetic circuit, minimum magnetic resistance and minimum vibration.
A solid epoxy coating that provides moisture resistance, rust and corrosion protection, and noise reduction.
The high-strength non-magnetic fastening strap, combined with an elastic damping design, eliminates loosening or extraneous noise during operation.
The noise level is 3-5 dB(A) lower than SCB14 and close to the background noise of the environment.
Winding: High strength, excellent insulation and high short circuit resistance.
Low Voltage Foil Winding: Solid wound from high precision oxygen-free copper foil, provides uniform current distribution and extremely low eddy current losses.
High voltage multilayer cylindrical winding: balanced ampere-turn number, uniform interlayer insulation, excellent resistance to sudden short circuit.
Vacuum epoxy casting with fiberglass reinforcement: no bubbles, voids, weak spots, high strength.
Insulating properties include high impact resistance, moisture resistance, resistance to pollution, no cracking or aging.
Fire resistance class FV-0, smokeless, non-toxic, non-flammable when burning, meets the highest fire safety requirements.
IV. Key Performance Benefits
extreme energy savings
with the lowest long-term operating costs.
Suitable for 24/7 operation in high-load environments such as data centers, power grids, industry and retail.
Reduces network losses, improves power factor and reduces investments in reactive power compensation.
The highest level of security
Completely oil-free design, eliminating leaks, fires and explosions.
Can be installed directly indoors, in basements, high-rise buildings and distribution centers.
No oil storage facilities, fire walls or fire pipelines are required, which significantly reduces investment in civil construction.
Meets the highest fire safety standards for crowded areas such as hospitals, schools, subways, airports and shopping centres.
Highest short-circuit resistance in the industry.
The foil and cylindrical winding construction provides short circuit and impact resistance that significantly exceeds national standards.
High insulation integrity, no cracks, no aging, extremely low failure rate during long-term operation.
Fully suitable for noise-sensitive areas such as residential areas, hospitals, schools, office buildings and laboratories.
Ultra-high adaptability to the environment
Waterproof, dustproof, salt fog, pollution and condensation resistant.
Functions reliably over long periods of time in coastal, chemical, mining, humid, dusty and high altitude conditions.
V. Full range of applications
Power grid systems: 35 kV substations, urban distribution networks, step-down substations in industrial parks, modernization of power grids for energy saving purposes.
Data centers and new infrastructure: data centers, cloud computing centers, big data industrial parks, computing centers (preferably with low PUE).
Luxury public buildings: airports, metro stations, high-speed rail stations, hospitals, schools, shopping malls, office buildings, high-rise buildings.
New energy sources for electricity generation: 35 kV collector substations for photovoltaic and wind power plants, auxiliary structures for power plants using energy storage devices.
Hazardous industrial environments: oil, chemical, coal, pharmaceutical, metallurgical, as well as areas with flammable and explosive substances.
Special conditions: Coastal fog with high salt concentrations, humid and rainy climates, severe air pollution, high altitude areas, low temperatures and areas with noise restrictions.
