Hermetically Sealed 250KVA 315KVA Three-Phase Oil Immersed Step-Down Distribution Transformer
Hermetically Sealed Oil-immersed 250KVA 315KVA Three-Phase Oil-Immersed Step-Down Distribution 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, ...
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.
-
Hermetically Sealed Design
- Prevents moisture ingress, oxidation, and oil leakage
- Extends transformer lifespan and reduces maintenance frequency
-
High Reliability & Performance
- Suitable for continuous operation under full load
- High short-circuit withstand capability ensures equipment protection
-
Efficient Step-Down Transformation
- Converts medium voltage to low voltage for industrial, commercial, or residential use
- Stable voltage output ensures optimal operation of downstream equipment
-
Robust Construction
- High-quality laminated core and copper/aluminum windings
- Durable tank and conservator to withstand mechanical and thermal stress
-
Environmentally Friendly
- Reduced oil evaporation and leakage
- Compliant with international safety and environmental standards
| 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 |
- Coil Number: Two Windings, Three Windings, Single Winding
- Coil Structure: Shell-Type Coil, Layer Coil, Fully Sealed Construction, Disc Coil, Round Coil
- Type: Oil Immersed Distribution Type
- Hermetically sealed design for enhanced protection
- No silica gel replacement
- No oil filtration required
- Minimal inspection during service life
- No moisture ingress
- Significantly reduced oil oxidation
- Stable dielectric strength over time
- Excellent performance in hot, humid, and dusty climates
- Suitable for coastal, mining, and industrial areas
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 |
-
Step Up Oil Immersed Type Transformer 125 Kva 12 Kv Substation Power Transformer
Step Up Oil Immersed Type Transformer 125 KVA 12 KV Substation Power Transformer Product Specifications Attribute Value Type Distribution Transformer, Oil-filled Transformer Material Copper, Aluminum, Copper Winding Frequency 60Hz, 50Hz Winding Material Copper, Aluminum Application Power Distribution System Phase Three Rated Capacity 30-3000kVA Cooling ONAN/ONAF or Customized Protection Level IP00 Warranty 3 Years Product Overview The HENTG Power Step Up Transformer is a high
-
Adjustable Voltage Oil Immersed Transformer 6.3-10KV 250-630kVA 3 Phase Multi Winding
Adjustable Voltage Oil Immersed Transformer 6.3-10KV 250-630kVA 3 Phase Multi Winding Product Attributes Attribute Value Frequency 50Hz, 60Hz Coil Number Three Windings, Multi Winding, Two Windings, Single Winding Application Distribution system Coil Structure Fully sealed construction Output Voltage 415V, 110V, 220V, 380V, 400V, 440V Input Voltage 10.5kV, 3kV, 12.47kV, 6.6kV Type Oil-Immersed Transformer, Isolation Transformer, Voltage Regulator Transformer, AUTOTRANSFORMER,
-
Mv Hv Oil Immersed Transformer 315kVA To 630kVA 3 Phase Distribution Transformer 60Hz
MV HV Oil Immersed Transformer 315kVA to 630kVA 3 Phase Distribution Transformer 60Hz Product Specifications Attribute Value Frequency 60Hz Phase Three, Single Phase Application Power Transformer Output Voltage 415V, 380V, 400V, 110V, 220V, 440V, 480V Input Voltage 11kV, 10.5kV, 6.3kV, 6.6kV, 6kV, 10kV, 35kV Type Oil-Immersed Transformer Coil Copper/Aluminum Coil Usage Power, Distribution Transformer Rated Power 10-5000 kVA Insulation Class Class A, Class B, Class F, Class H
