Audited Supplier
The S11/13-M series fully sealed oil immersed power transformers developed and produced by our company have the advantages of low loss, low noise, and high efficiency, which can achieve good energy-saving effects and reduce pollution. Compared with ordinary oil immersed transformers, fully sealed transformers eliminate oil storage tanks, and the change in oil volume is automatically adjusted and compensated by the elasticity of the corrugated sheets in the corrugated oil tank. The transformer is isolated from air to prevent and slow down oil degradation and insulation aging, enhance operational reliability, and operate normally without maintenance.
Product Features
1. The transformer iron core is made of imported high-quality cold-rolled silicon steel sheets stacked together, greatly reducing no-load losses and no-load currents. The iron core is tied to ensure its compactness and reduce noise.2. The high and low voltage windings are made of oxygen free copper. For low voltage windings of 500kVA and below, a double-layer cylindrical structure is used. For windings of 630kVA and above, foil coils are used. For high voltage windings, a multi-layer cylindrical structure is used.
3. The transformer connection group adopts Dyn11 to reduce the impact of harmonics on the power grid and improve the quality of power supply.
4. The transformer is a fully sealed structure, which extends its service life, eliminates the need for lifting and maintenance.
5. The measured noise level is lower than the standard.
After normal transportation, this series of transformers can be installed with relevant components without the need for core inspection. After passing the acceptance test, they can be put into operation.
Usage conditions
1. Maximum ambient temperature:+40 ºC
2. Minimum ambient temperature: -25 ºC
Altitude:<1000m3
A. Maximum monthly average relative humidity: 90% (20 ºC) 5. Installation location: Installed in a place without fire, explosion hazard, serious pollution, chemical corrosion, and severe vibration, indoors or outdoors.
Execution standards
GB 1094.1 Power Transformers
GBTT 15164 Load Guide for Oil immersed Power Transformers
GB/T 6451 Technical Parameters and Requirements for Three phase Oil immersed Power Transformers
GB 2536 Transformer Oil
JB/T 3837 Method for Model Designation of Transformer Products
JB/T 501 Test Guidelines for Power Transformers
GB1094.3 Insulation level and insulation test of power transformers - Air gap for external insulation
DL/T572
Transformer Operation Regulations
The above standards shall be subject to the latest release; Other requirements of the equipment should be based on the latest national or professional standards.
If you have a demand for transformers with a capacity exceeding 2500kVA or customized requirements, please feel free to contact me.
| Main product performance parameters of S11 10KV double winding series | |||||||||
| Model | Rated capacity | Connection symbol | Voltage combination(KV) | No load loss | Load loss(W) | No load current(%) | Short circuit impedance(%) | ||
| (KV | High voltage | tap range | Low voltage | (W) | |||||
| S11-M-30 | 30 | Yyn0 / Dyn11 | 6 6.3 10 10.5 11 | ±5% / ±2×2.5% | 0.4 | 100 | 630/600 | 1.5 | 4.0 |
| S11-M-50 | 50 | 130 | 910/870 | 1.3 | 4.0 | ||||
| S11-M-63 | 63 | 150 | 1090/1040 | 1.2 | 4.0 | ||||
| S11-M-80 | 80 | 180 | 1310/1250 | 1.2 | 4.0 | ||||
| S11-M-100 | 100 | 200 | 1580/1500 | 1.1 | 4.0 | ||||
| S11-M-125 | 125 | 240 | 1890/1800 | 1.1 | 4.0 | ||||
| S11-M-160 | 160 | 280 | 2310/2200 | 1.0 | 4.0 | ||||
| S11-M-200 | 200 | 340 | 2730/2600 | 1.0 | 4.0 | ||||
| S11-M-250 | 250 | 400 | 3200/3050 | 0.9 | 4.0 | ||||
| S11-M-315 | 315 | 480 | 3830/3650 | 0.9 | 4.0 | ||||
| S11-M-400 | 400 | 570 | 4520/4300 | 0.8 | 4.0 | ||||
| S11-M-500 | 500 | 680 | 5410/5150 | 0.8 | 4.0 | ||||
| S11-M-630 | 630 | 810 | 6200 | 0.6 | 4.5 | ||||
| S11-M-800 | 800 | 980 | 7500 | 0.6 | 4.5 | ||||
| S11-M-1000 | 1000 | 1150 | 10300 | 0.6 | 4.5 | ||||
| S11-M-1250 | 1250 | 1360 | 12000 | 0.5 | 4.5 | ||||
| S11-M-1600 | 1600 | 1640 | 14500 | 0.5 | 4.5 | ||||
| S11-M-2000 | 2000 | 1940 | 18300 | 0.4 | 5.0 | ||||
| S11-M-2500 | 2500 | 2290 | 21200 | 0.4 | 5.0 | ||||
| Insulation level | ||||
| Voltage level kV | Maximum operating voltage of kV | Rated short-time power frequency withstand voltage kV(Effective value)/1min | Rated lightning impulse withstand voltage kV (peak) | |
| full wave | Truncated wave | |||
| 0.4 | 0.46 | 5 | 75 | 85 |
| 10 | 12 | 35 | ||
| 20 | 23 | 55 | 125 | 140 |
Q: Are you a Manufacturer, factory or Trading company ?
A: Yes, We are engaging in the research and development, production and operation of transformer for over 10 years.
Q: What's your warranty terms?
A: We offer 12 months warranty time.
Q: Production Time?
A: In general, it take 4~6weeks and it depend on the different style.
Q: What's your payment terms?
A: Pay by T/T and L/C is acceptable.
Q: How do you conduct quality control in your factory?
A: We implement 100% QC inspection to ensure every product is qualified. We have over 10 times QC inspections during the manufacturing process from raw material to the final products.Each of our unit has 3C certificate. If you need any other Certificate, we can help you to apply it.
Q: Do you have the products in stock?
A: Normally no. All our products produce depending to your order quantity.
Q: What should provide to make custom transformer ?
A: Technical drawing and technical specification document are the best, or you can tell us some details technical specification date as below "Quotation and Ordering Required Information".
Q: Could I have your catalog and price list for trial order in MOQ quantity?
A: All of our products are showing on Made-in-China or official website, you are always welcome to ask us to get more information directly.
