Outdoor Dry Type Transformer
Outdoor dry type transformers are oil-free power conversion devices designed specifically for harsh outdoor environments. They utilize weather-resistant solid insulation materials, completely eliminating the traditional oil-immersed structure and preventing risks of oil leakage, fire, and environmental pollution from the source. The core windings are vacuum-cast with UV-resistant epoxy resin and fitted with a corrosion-resistant sealed shell, achieving a protection level of IP54 and above. They can operate stably under complex outdoor conditions such as high temperatures, heavy rain, sandstorms, and extreme cold.
Description
Details page content
I. A brief product introduction
Featuring an oil-free design, this product eliminates the risks of oil leaks, fires, and environmental pollution. The core winding is vacuum-cast with UV-resistant epoxy resin, offering H-class insulation (temperature resistance up to 180℃). Combined with both natural and forced air cooling, it can operate stably at full load in environments ranging from -40℃ to 45℃. The outer casing undergoes double corrosion protection through hot-dip galvanizing and powder coating, providing over 10 years of UV resistance and a maximum protection rating of IP55, capable of withstanding harsh environments such as heavy rain, dust, high salt spray, and sandstorms. Standard features include a pressure relief valve and temperature control system, automatically alarming and cutting off power in case of overheating or overload. High-end models can be equipped with temperature and humidity sensors and online insulation monitoring, supporting remote transmission via the Internet of Things for unattended operation and maintenance.
This product is widely applicable to outdoor scenarios such as residential substations, rural power distribution, high-speed lighting, mines and oil fields, and industrial parks, meeting the comprehensive needs of new power systems for safety, environmental protection, and intelligence.
II. Model Explanation
III. Product Details/Advantages
- Reliable and Stable Grounding
Precisely leads out the neutral point with a stable connection, unaffected by grid load, temperature and humidity, or electromagnetic interference, preventing grounding failure.
- Efficient Fault Protection
Responds rapidly to single-phase ground faults, conducts fault current, suppresses overvoltage, reducing equipment damage and the risk of grid outages.
- Wide Application Adaptability
Compatible with mainstream grounding modes without requiring additional modifications, suitable for various projects and system upgrades while lowering construction costs.
- Lightweight, Durable, and Easy to Maintain
Light in weight for convenient transportation and installation; undergoes rigorous testing for aging resistance and corrosion resistance with slow performance degradation, requiring minimal maintenance and offering a long service life.
- Safe, Environmentally Friendly, and Compliant
Complies with national standards and industry regulations, with no harmful emissions; dry-type models are fire-resistant and leakage-proof, while oil-immersed models provide excellent insulation and heat dissipation, meeting diverse application needs.
IV. Product Parameters
|
Parameter Name |
Parameter Value |
|
Power Range |
50kVA – 3150kVA |
|
High Voltage |
10kV / 35kV |
|
Low Voltage |
0.4kV |
|
Insulation Class |
H |
|
Winding Temperature Rise Limit |
125K |
|
Core Temperature Rise Limit |
80K |
|
Protection Rating |
IP54 – IP65 |
|
Protection Capability (IP65) |
Protection against sea wave impact |
|
Noise Level |
≤55dB |
|
Vibration Resistance Rating (selected models) |
Level 8 |
V. Scope of Supply
|
No |
Name |
Model |
Quantity |
Unit |
|
1 |
dry type grounding transformer |
Based on actual parameters |
1 |
Set |
|
2 |
cabinet body |
Based on actual parameters |
1 |
Set |
VI. Optional Customization Solutions
We consider customization a core competency, committed to transforming your personalized needs into the core competitiveness of our products. From concept development to final delivery, our engineering team will collaborate with you throughout the entire process, deeply optimizing aspects such as environmental adaptability, functional modules, installation interfaces, and intelligent operation and maintenance. This ensures that each customized product is not only a device that meets specifications, but also a solution that creates unique value for you.
VII. Quality
Rsafele Electric upholds a meticulous quality spirit, which is reflected in our rigorous control over the entire process, strict process management, and written quality planning.
Qualification association: We adhere strictly to globally recognized regulations and protocols, integrating environmental excellence and quality management throughout the product lifecycle.
VIII. Real-world cooperation cases
In order to meet the strict outdoor operating conditions of the Taiz Mukalla Ataq station project for export to Yemen, we customized and delivered this outdoor dry type transformer. The product features a dual-protection design with epoxy composite insulation and a stainless-steel sealed casing, providing excellent resistance to high temperatures and salt spray corrosion. Since commissioning, the transformer has maintained a stable connection to the output power distribution system without any performance degradation. Even under extreme summer temperatures, it maintains a conversion efficiency of 99.2%, and its superior environmental adaptability and high efficiency have earned high praise from the customer.
IX. Application Scenarios
Outdoor dry-type grounding transformers, with their moisture-proof, corrosion-resistant, and weather-resistant design, are widely used in:
- New Energy Stations:
Used in wind farms (outside turbines or in substations) and PV plants (at booster stations) to create neutral points for system grounding.
- Power Distribution Nodes:
Provide artificial neutral points for 10kV cable systems in urban ring main units, and serve traction power systems along railways.
- Industrial Outdoor Power Systems:
Applied in mines, oil fields, ports, and large factories where harsh conditions (e.g., salt spray, dust) require robust outdoor grounding solutions.
X. Our Service
Our after-sales service and technical team solemnly promises
Pre-Sales Service
Consultation & Guidance: 24/7 online support with expert engineers to clarify needs, recommend solutions, and advise on pricing and processes.
On-Site Inspection: Engineers visit sites for precise measurements and environmental assessment, deliver detailed reports to support tailored system design.
After-Sales Service
Year Warranty: Covers material/manufacturing defects as per contract.
Dedicated Support: One-on-one follow-up from a specialized team for seamless assistance.
Multi-Channel Help: Support via contacts, project teams, or website; fast global coordination for repairs or replacements during warranty.
XI. Product usage tutorials, solutions, and technical problem notifications
Pre-Startup Checklist: Key Verification Items
Visual & Mechanical Inspection
Electrical Integrity Check
Cooling & Environmental Verification
[Click here to view the complete product manual & detailed instructions >]
XII. Packaging and Transportation
XIII. Factory Strength
1. Qualification Certificates
2. Innovative technologies/capabilities
(1) High-tech enterprise certificate
3. Supply Chain Advantages
- Standardized integrated production
The manufacturing and testing of transformers, including the main body, enclosure, protection, and cooling systems, are completed integrally within the factory, reducing on-site installation and commissioning work.
- More Efficient Logistics and Warehousing
The structure is robust and highly resistant to damage, making it suitable for long-distance transportation and outdoor storage. The complete machine is shipped as a single unit, simplifying logistics and facilitating management.
- Reduce on-site management costs
Reduce on-site construction processes, minimize reliance on professional technicians, while mitigating quality risks and safety hazards in field operations, ensuring more streamlined and controllable site management.
4. Professional production equipment (CNC)
XIV. FAQ
Q: 1. What typically leads to excessive heat in the windings, and what is the proper response?
A: Common Triggers: This is frequently due to issues with the cooling system (such as fan malfunction), extended operation beyond rated capacity, heavy buildup of debris on the windings, or internal electrical failures like short circuits between turns.
Recommended Actions: Begin by cleaning the windings and checking/replacing any defective fans. Should temperatures persist even after reducing the electrical load, it is critical to de-energize the unit. Subsequently, perform insulation integrity and DC resistance tests to check for potential internal damage.
Q: 2. Why might insulation resistance drop, and how can this be corrected?
A: Primary Factors: A decline is mainly attributed to moisture infiltration in the windings, contamination from dirt or dust on surfaces, degradation of the insulating material over time, or operation in an environment with high humidity levels.
Resolution Steps: The necessary corrective actions involve comprehensive cleaning and drying of the windings (for instance, using controlled hot air). Furthermore, implementing steps to lower the surrounding air humidity (ideally keeping it at or below 85%) is essential to tackle the root cause of moisture absorption.
Q: 3. What can different unusual operational noises suggest about potential faults?
A: Sound Analysis and Response:
Arcing or Sparking Noise: Often signals a failure in insulation. The unit requires an immediate shutdown for a thorough internal examination and replacement of any compromised insulation components.
Pronounced Humming or Buzzing: Commonly results from excessive load or voltage supply. The response should involve lowering the load and verifying that the input voltage is within the specified range.
Persistent Grinding or Rubbing: Typically points to mechanical issues, such as loose structural fastenings in the core or deteriorating bearings in the cooling fans. These components need to be tightened or replaced accordingly.
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