Ⅰ. Product Overview
Oil-immersed transformers are power transmission and distribution equipment with insulating oil as the main cooling and insulating medium.Its iron core and winding are completely immersed in transformer oil, which has the advantages of high insulation strength, good heat dissipation efficiency, and stable operation.
Oil-immersed transformers are currently the most widely used transformer category. They are suitable for outdoor, medium and high voltage, heavy-duty and long-term continuous operation scenarios. They are widely used in industrial production, urban power grids, new energy power stations, petrochemical industry and infrastructure projects.
II. Seven technological advantages
Competitive advantage
The company conducted a competitive advantage analysis to identify its strengths and weaknesses compared to its rivals.
Reliable Insulation Performance
Adopts a fully sealed fuel tank structure and Kechang's patented anti-leakage design, which can effectively block the invasion of moisture and dust, maintain stable insulation strength for a long time, and avoid performance attenuation due to moisture.
01
Long Service Life
The product design has a service life of more than 30 years, which far exceeds the industry average of 20-25 years. The silicone desiccant is replaced every 5 years or more, which is almost maintenance-free and greatly reduces the cost of late operation and maintenance.
02
Energy-Saving
The core is made of high-permeability silicon steel sheet, which greatly reduces no-load loss. Taking Kechang S22 series as an example, compared with the traditional S13 series, the no-load loss is reduced by more than 30%, and the energy-saving benefits of long-term operation are outstanding.
03
Strong Environmental Adaptability
It can operate stably in a wide temperature range of -25℃～+40℃. It is suitable for altitudes up to 3000 meters, and is suitable for harsh working conditions such as outdoor, high altitude, humidity, and dust.
04
Comprehensive Price Ratio is High
The price of oil-immersed transformers of the same capacity is about 30% cheaper than dry transformers. Coupled with low losses and low maintenance costs, the long-term overall cost advantages are very obvious.
05
III. Why choose us
- Professional manufacturer, with 56 patents
- Has ISO certification, in line with IEC international standards and national standard GB standards
- A full range of 10kV–35kV oil-immersed transformers are complete
- Support OEM/ODM project customization
- Design life ≥30 years, low operation and maintenance cost
- 100% full inspection at the factory, provide official inspection report
- Export standard packaging, support shipping by sea
- Full cycle service: one-stop support for selection, production, and after-sales
IV. Frequently Asked Questions
How to choose between oil-immersed and dry transformers?
+
-
Oil-immersed type: suitable for outdoor, high efficiency and lower cost; dry type transformer: suitable for indoor and scenes with high fire safety level requirements.
How long is the service life?
+
-
The design service life is ≥30 years, which is better than the industry standard.
How long is the maintenance cycle?
+
-
The moisture absorber is replaced once in 5 years or more, which can basically achieve maintenance-free.
Does it support customization?
+
-
Voltage, capacity, dimensions, protection level and structure type can be customized.
Do you provide a test report?
+
-
Each transformer has undergone a full set of factory inspections, and an official inspection report can be provided.
| Model Number | Rated Volume Quantity (KVA) |
Voltage Combination(KV) | Connection Group Label | No-load Loss (W) |
Load Loss (W) |
No-load Electricity (%) |
Short Circuit Resistance (%) |
||
| High Voltage | High Voltage Tap Range | Low Voltage | |||||||
| S20-M-30 | 30 | 6 6.3 10 10.5 |
±5% or ±2×2.5% |
0.4 | Dyn11 or Yyn0 |
70 | 505/480 | 0.5 | 4 |
| S20-M-50 | 50 | 90 | 730/695 | 0.5 | 4 | ||||
| S20-M-63 | 63 | 100 | 870/830 | 0.5 | 4 | ||||
| S20-M-80 | 80 | 115 | 1050/1000 | 0.45 | 4 | ||||
| S20-M-100 | 100 | 135 | 1265/1200 | 0.45 | 4 | ||||
| S20-M-125 | 125 | 150 | 1510/1440 | 0.45 | 4 | ||||
| S20-M-160 | 160 | 180 | 1850/1760 | 0.4 | 4 | ||||
| S20-M-200 | 200 | 215 | 2185/2080 | 0.4 | 4 | ||||
| S20-M-250 | 250 | 260 | 2560/2440 | 0.4 | 4 | ||||
| S20-M-315 | 315 | 305 | 3065/2920 | 0.35 | 4 | ||||
| S20-M-400 | 400 | 370 | 3615/3440 | 0.35 | 4 | ||||
| S20-M-500 | 500 | 430 | 4330/4120 | 0.3 | 4 | ||||
| S20-M-630 | 630 | 510 | 4960 | 0.25 | 4.5 | ||||
| S20-M-800 | 800 | 630 | 6000 | 0.18 | 4.5 | ||||
| S20-M-1000 | 1000 | 745 | 8240 | 0.17 | 4.5 | ||||
| S20-M-1250 | 1250 | 870 | 9600 | 0.17 | 4.5 | ||||
| S20-M-1600 | 1600 | 1050 | 11600 | 0.16 | 4.5 | ||||
| S20-M-2000 | 2000 | 1225 | 14640 | 0.16 | 5 | ||||
| S20-M-2500 | 2500 | 1440 | 16960 | 0.16 | 5 | ||||
Hot Tags: oil filled transformer, China oil filled transformer manufacturers, suppliers, factory, 200 kva distribution transformer, Three Phase Transformers, 25 kva pad mounted transformer, overhead distribution transformer, 11kv distribution transformer, 100 kva pole mounted transformer
