SGOB Anti Loosening Treated Fasteners 250kVA Distribution Transformer, China export for medium-voltage distribution. It ensures stable mechanics and electric conduction, resisting vibration and heat expansion ignored by regular efficiency-focused transformers.
Anti Loosening Treated Fasteners 250kVA Distribution Transformer, manufactured by Shanghai Industrial Transformer Co., Ltd., caters to complex power projects. Harsh installation environments, transport vibration and years of outdoor operation all call for superior structural safety that ordinary transformers cannot match.
This page is for: Utility procurement managers, EPC contractors, infrastructure project engineers, and maintenance teams who have experienced fastener loosening issues in outdoor distribution transformers and seek a more structurally reliable solution.
Shanghai Industrial Transformer Co., Ltd. (SGOB), established in 2007, operates a 40,000 sqm modern production facility with over 200 employees, including 46 engineering and technical personnel.
Core production and testing systems include:
Product range covers oil-immersed transformers, dry-type transformers, photovoltaic and wind power transformers, and complete substation systems used in global infrastructure projects.
In long-term transformer operation, failures are not always caused by electrical breakdown. Many field engineers report mechanical issues such as:
These issues are especially common in distributed networks and remote infrastructure projects.
Instead of treating fastening as a secondary detail, SGOB integrates it into the reliability design chain. For the SGOB Anti Loosening Treated Fasteners 250kVA Distribution Transformer, engineering improvements include:
Anti-loosening treatment methods applied: Mechanical locking washers + thread-locking compound application + controlled torque assembly process. All key fastening points are processed under standardized factory procedures rather than field assembly. This reduces the probability of long-term structural drift.
While mechanical design is a key focus, the electrical system remains aligned with mature oil-immersed transformer technology.
Core configuration:
This ensures stable voltage output under fluctuating load conditions.
The transformer uses a traditional but optimized oil-immersed system:
This structure is widely used in outdoor distribution networks due to its reliability.
| Item | Specification |
|---|---|
| Rated Capacity | 250 kVA |
| Transformer Type | Oil-immersed distribution transformer |
| HV Range | 6–20 kV |
| LV Range | 0.2–0.4 kV |
| Cooling Method | ONAN (Oil Natural Air Natural) |
| Core Material | Cold-rolled grain-oriented silicon steel |
| Winding Material | Oxygen-free copper |
| No-load Loss | ≤0.40 kW (reference value) |
| Load Loss | ≤3.05 kW (reference value) |
| Impedance Voltage | 4% |
| Structural Feature | Anti-loosening treated fasteners |
| Application | Industrial / Residential / Infrastructure |
| Feature | Standard Transformer | SGOB Anti-Loosening Model |
|---|---|---|
| Fastener Treatment | Standard torque only | Anti-loosening treated fasteners |
| Vibration Resistance | Standard | Reinforced mechanical locking |
| Transport Stability | Standard positioning | Optimized hoisting + body positioning |
| Maintenance Interval | Regular tightening checks | Reduced structural inspection frequency |
| Long-term Structural Drift | Possible over time | Minimized by design |
SGOB implements strict industrial-grade material control:
All materials are verified under ISO-based quality management systems.
Each SGOB Anti Loosening Treated Fasteners 250kVA Distribution Transformer undergoes full-cycle manufacturing control:
This ensures consistency across export batches.
Yes. In real installations, vibration from load variation and transport stress can gradually loosen standard fasteners. This does not immediately stop operation but increases long-term maintenance risk and structural instability. The 250kVA Distribution Transformer directly addresses this issue.
No. The anti-loosening system is designed to reduce maintenance frequency by improving mechanical stability. Routine oil and electrical inspections remain standard, but structural tightening checks are reduced.
Yes. The oil-immersed structure combined with reinforced fastening design makes it suitable for outdoor distribution environments, including urban substations and industrial yards.
The main difference is mechanical reliability. Standard models focus mainly on electrical performance, while this design adds structural reinforcement to reduce loosening risk over long-term operation.
Yes. The reinforced body positioning and fastening structure improves stability during shipping, which is important for overseas infrastructure projects.
MOQ is 1 unit. Lead time is 30–40 working days after deposit confirmation.
Please provide your primary voltage, secondary voltage, installation altitude, and ambient temperature.
The SGOB Anti Loosening Treated Fasteners 250kVA Distribution Transformer is widely used in:
The 250kVA Distribution Transformer is designed to address a practical but often overlooked failure factor in power systems—mechanical loosening over time. By strengthening structural stability while maintaining mature oil-immersed electrical performance, SGOB provides a more dependable solution for long-term distributed power infrastructure. (Product full name appears as engineered reference.)
Request a quotation for SGOB 250kVA Distribution Transformer
Contact Shanghai Industrial Transformer Co., Ltd. with your project voltage requirements and installation environment.
