Hunan Hentg Power Electric Technology Co., Ltd.
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Product Specification
| High Light | Hermetically Sealed Oil Immersed Transformer ，250KVA Step-Down Distribution Transformer ，315KVA Three-Phase Power Transformer | ||
Our 250kVA and 315kVA three-phase oil-immersed step-down distribution transformers are hermetically sealed to ensure long-term reliability and minimal maintenance. Designed for industrial, commercial, and municipal power distribution, these transformers deliver stable and efficient power while providing excellent protection against environmental factors.
| Specification | Details |
|---|---|
| Model Number | S13 |
| Brand Name | HENTG POWER |
| Place of Origin | Jiangsu, China |
| Type | Oil-Immersed Transformer, Dual Winding Transformer |
| Application | Power Transformer |
| Winding Material | 100% Copper/Aluminum |
| Vector Group | Dyn11 / Yyn0 |
| Capacity | 250KVA 315KVA |
| Warranty | 12 months |
| Certification | ISO CE |
Although the initial investment may be slightly higher than conventional designs, the life-cycle cost is significantly reduced due to minimal maintenance and extended service life.
Hermetically Sealed vs. Conservator Type – Quick Comparison
| Item | Hermetically Sealed Type | Conservator Type |
|---|---|---|
| Oil system | Fully sealed | Oil tank + conservator |
| Air contact | None | With ambient air |
| Breather | Not required | Required |
| Moisture ingress risk | Very low | Medium to high |
| Oil aging speed | Very slow | Faster |
| Maintenance | Maintenance-free | Periodic maintenance |
| Suitability for hot & humid areas | Excellent | Moderate |
| Reliability | ⭐⭐⭐⭐⭐ | ⭐⭐⭐ |
| Service life | Longer | Standard |
| Typical application | Distribution & industrial | Large substations |
| Regional Challenge | Conventional Problem | Our Solution |
|---|---|---|
| High ambient temperature | Accelerated oil aging | Sealed oil system prevents oxidation |
| High humidity & rainfall | Moisture contamination | Airtight design eliminates air ingress |
| Dusty / polluted environment | Breather clogging | No breather required |
| Limited maintenance capability | Frequent servicing needed | True maintenance-free operation |
| Remote installation locations | High O&M costs | Reduced inspection and service |
Company Details
Business Type:
Manufacturer
Year Established:
2011
Total Annual:
300-500MVA
Employee Number:
150~200
Ecer Certification：
Verified Supplier
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